Image guidance treatment system based on open magnetic resonance imaging

Abstract

The utility model discloses an image guiding treatment system based on open type magnetic resonance imaging. The image guiding treatment system comprises an open type MR imaging subsystem, a treatment subsystem and a control subsystem. And the MR imaging subsystem comprises an image acquisition and image processing module and is used for acquiring a real-time image of a patient and marking a target region and a treatment region so as to provide high-precision image support for the treatment subsystem. The treatment subsystem comprises a treatment preparation module and a treatment implementation module which are respectively responsible for treatment positioning planning and precise implementation. The control subsystem comprises a data synchronization module and a parameter adjustment module, the data synchronization module realizes real-time data transmission among the subsystems, and the parameter adjustment module dynamically optimizes treatment parameters according to image feedback. The treatment accuracy is improved through the image processing module, the parameter adjusting module tracks the influence of movement of a patient on treatment in real time, and the parameter adjusting module provides accurate target region information for the treatment subsystem, so that the treatment process is dynamically adjusted. The real-time performance, accuracy and flexibility of treatment are improved, and various clinical treatment requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of imaging equipment, concretely relates to an image guided therapy system based on open magnetic resonance imaging. BACKGROUND

[0002] Since the advent of magnetic resonance imaging (MRI) technology in the 1970s, it has become an indispensable tool in the field of medical imaging. With its non-invasive, non-radiation, high soft tissue contrast and other characteristics, MRI is widely used in the diagnosis and monitoring of internal structures of the human body. In the past few decades, MRI technology has continuously improved, with imaging accuracy, speed and clinical application range all expanding. However, with the development of modern medical technology, a single imaging function has been difficult to meet complex clinical needs, especially in areas requiring high precision and personalized treatment, such as tumor ablation, interventional therapy and radiotherapy.

[0003] In these high-precision treatment processes, doctors not only need detailed anatomical information, but also need to obtain real-time and accurate image guidance during treatment to ensure precise positioning and operation of treatment instruments, thereby maximizing the protection of healthy tissues. This need has given rise to the development of MRI-based image-guided therapy systems, which combine online or real-time imaging with treatment methods to provide more possibilities for clinical treatment. For example, during tumor ablation therapy, MRI can monitor tumor changes in real time and guide treatment equipment to act precisely on tumor sites, thereby improving treatment effectiveness and reducing side effects.

[0004] However, existing MRI-based image-guided therapy systems are mainly based on closed MRI systems. Due to their closed structure, although they can provide high-strength magnetic fields and high-quality imaging effects, they have significant limitations in terms of treatment operation space, patient comfort, and integration with other treatment equipment. Specifically, the closed MRI system has a small space, which limits the doctor's operation and easily causes patients' claustrophobia. In addition, the closed structure makes it difficult to physically integrate with other treatment equipment, which to some extent limits the system's versatility and flexibility.

[0005] To address these issues, open MRI systems have been developed. Open systems create a more spacious operating environment by placing two magnets opposite each other, while retaining the superior performance of magnetic resonance imaging, making them particularly suitable for use in complex treatment environments. However, traditional open MRI systems still struggle to match the field strength, uniformity, and imaging quality of closed systems. As a result, while open systems have made significant improvements in terms of ease of operation and patient comfort, they still struggle to be used simultaneously with other treatment systems, primarily due to the fact that magnetic resonance imaging systems require a certain amount of time to collect sufficient data to generate high-quality images, while during treatment, quick image acquisition is required to monitor the treatment process in real time. Real-time imaging is critical for certain treatment processes, but current MRI technology may not provide sufficient imaging speed, and its use in high-precision medical applications is still limited.

[0006] To this end, the present patent application No. 202410726438.1 discloses an open magnetic resonance imaging system, which can greatly improve the imaging speed and uniformity of the open magnetic resonance imaging system, greatly improve the overall effect of the open magnetic resonance imaging system, and overcome the above-mentioned drawbacks of the traditional open magnetic resonance imaging system. However, how to use it simultaneously with other treatment systems to improve the precise guidance of surgical treatment and provide high-precision operation support for some complex surgeries remains a technical problem to be solved. Invention content

[0007] Therefore, the present application provides an image-guided therapy system based on open magnetic resonance imaging to solve the problem that traditional open magnetic resonance imaging systems cannot be used simultaneously with treatment systems.

[0008] To solve the above technical problems, the technical scheme of the present application is as follows:

[0009] An image-guided therapy system based on open magnetic resonance imaging, comprising:

[0010] An open MR imaging subsystem, comprising a magnetic resonance imaging unit, the magnetic resonance imaging unit is provided with two, and the two magnetic resonance imaging units are oppositely arranged, side close and arranged at a certain distance, the magnetic resonance imaging unit comprises an outer shell and a magnetic resonance imaging magnet arranged in the outer shell; the open MR imaging subsystem comprises an image acquisition module and an image processing module electrically connected to each other, the image acquisition module and the image processing module are used to acquire real-time images of the patient before and during treatment and mark the target area and the treatment area;

[0011] A therapy subsystem electrically connected with the open MR imaging subsystem, the open MR imaging subsystem being configured to provide imaging support for the therapy subsystem, the therapy subsystem including at least one of an ablation therapy subsystem, a surgical therapy subsystem, a teletherapy subsystem, and a brachytherapy subsystem; the therapy subsystem including a therapy preparation module and a therapy implementation module electrically connected with each other, the therapy preparation module being configured to be responsible for therapy positioning planning, and the therapy implementation module being configured to accurately implement therapy on a patient;

[0012] A control subsystem electrically connected with the open MR imaging subsystem and the therapy subsystem, the control subsystem including a data synchronization module and a parameter adjustment module electrically connected with each other, the data synchronization module being configured to realize data transmission between the open MR imaging subsystem and the therapy subsystem, and the parameter adjustment module being configured to feed back dynamic therapy parameters to the therapy subsystem according to real-time images obtained by the open MR imaging subsystem.

[0013] Further, the two magnetic resonance imaging units are provided with sliding bases at bottoms thereof, and the therapy subsystem is detachably connected to one side of the open MR imaging subsystem.

[0014] Further, the open MR imaging subsystem includes:

[0015] A sliding base provided at a bottom of at least one of the magnetic resonance imaging units, and configured to drive the magnetic resonance imaging unit to slide so as to adjust a distance between the two magnetic resonance imaging units.

[0016] A driving mechanism connected with the sliding base, and configured to drive the sliding base to move;

[0017] And / or, a locking structure configured to fixedly connect the magnetic resonance imaging unit after the sliding base drives the magnetic resonance imaging unit to move to a preset distance.

[0018] Further, the sliding base is provided with a support frame made of damping material;

[0019] And / or, the driving mechanism is an electric motor;

[0020] And / or, the locking structure is an electromagnetic lock or a mechanical lock;

[0021] And / or, the open MR imaging subsystem includes:

[0022] A base provided below the sliding base, and a damping structure is arranged at a connection position of the sliding base and the base.

[0023] Further, the base is provided with a ball sliding rail, which is arranged between the base (1) and the sliding base.

[0024] Further, the image processing module comprises a multi-dimensional image fusion unit, a dynamic contour optimization unit and an edge refinement unit; the multi-dimensional image fusion unit is used for fusing image data of different modalities to extract multi-dimensional features of a lesion; the dynamic contour optimization unit is used for automatically adjusting a target region contour in combination with real-time images of a patient acquired by the image acquisition module; and the edge refinement unit is used for refining a target region contour boundary during contouring.

[0025] Further, the image acquisition module comprises a continuous image capturing unit, which is used for verifying patient positioning before treatment, continuously acquiring images of a treatment site of the patient during treatment, and generating a real-time dynamic image sequence.

[0026] Further, the image processing module comprises an image layering processing unit electrically connected with the continuous image capturing unit, which is used for processing images captured by the continuous image capturing unit in layers, and focusing images of different layers on details of a target region, position changes and tissue structure features.

[0027] Further, the open MR imaging subsystem comprises a feedback and adjustment unit associated with the continuous image capturing unit and the image layering processing unit, which is used for evaluating a current treatment effect of the treatment subsystem on the patient in real time according to whole-process images captured by the continuous image capturing unit, and for fine-tuning parameters or a treatment direction of the treatment subsystem according to evaluation information.

[0028] Further, the parameter adjustment module comprises a motion cycle analysis unit and a displacement compensation unit, the motion cycle analysis unit is used for analyzing a motion frequency, amplitude and rhythm of the patient in real time, generating a dynamic model of a motion cycle and sending the dynamic model to the displacement compensation unit, and the displacement compensation unit is used for adjusting a position of the treatment subsystem to compensate for movement of a target region position caused by motion of a treatment site of the patient after receiving the dynamic model information of the motion cycle analysis unit.

[0029] Further, the parameter adjustment module further comprises a dynamic synchronization unit associated with the motion cycle analysis unit and the displacement compensation unit, which is used for adjusting a motion rhythm of the treatment subsystem to be synchronized with a motion rhythm of the treatment site of the patient in the process of detecting motion of the treatment site of the patient by the motion cycle analysis unit.

[0030] The technical scheme of the utility model has the following advantages:

[0031] 1. The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, through the outside magnetic field of two magnets to synthesize a uniform central magnetic field, significantly expand the uniform magnetic field area, provide a larger imaging area magnetic field diameter, improve the overall effect of imaging. By setting the treatment subsystem and the control subsystem which are electrically connected with the open MR imaging subsystem, the treatment subsystem is integrated with the open MR imaging subsystem, the open MR imaging subsystem provides image or video guidance for the treatment subsystem, which can help doctors perform high-precision surgical operations, improve the accuracy and safety of surgery, and improve the surgical treatment effect. The treatment subsystem includes but is not limited to at least one of the ablation treatment subsystem, the surgical treatment subsystem, the teletherapy subsystem and the brachytherapy subsystem, and at least one treatment subsystem can be integrated with the open MR imaging subsystem to form different image-guided therapy modes, and then run independently for specific treatment methods, so as to meet various clinical needs. The data transmission between the open MR imaging subsystem and the treatment subsystem is realized through the data synchronization module, and the real-time image obtained by the open MR imaging subsystem is fed back to the treatment subsystem through the parameter adjustment module. The dynamic treatment parameters are used to realize real-time tracking of the influence of patient movement on treatment, facilitate dynamic adjustment of the treatment process according to the movement of the treatment site of the patient during the treatment process, improve the treatment effect, improve the real-time, accuracy and flexibility of the treatment, and meet various clinical treatment needs.

[0032] 2. The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, by detachably connecting the treatment subsystem to one side of the open MR imaging subsystem, different treatment subsystems can be replaced according to the treatment requirements, and the applicability of the image-guided therapy system is improved.

[0033] 3. The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, the two magnetic resonance imaging units are provided with sliding bases at the bottom, and the sliding bases are provided with support frames made of damping materials. In this way, the vibration caused by the movement of the treatment instrument or the patient can be absorbed by the support frames made of damping materials, and the interference of such vibration on the position of the magnet can be reduced.

[0034] 4. The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, the sliding base is arranged on a base, and a damping structure is arranged at the connection between the sliding base and the base. In this way, the damping structure can ensure that appropriate vibration buffering can be provided for the magnetic resonance imaging unit in the sliding or stationary state, and the deviation of the position of the magnet can be effectively avoided.

[0035] 5.The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, the base station is provided with a ball slide rail, and the magnetic resonance imaging unit is slidably installed on the ball slide rail through a sliding base. By adopting the ball slide rail, low friction and high stability of the sliding base during sliding can be ensured; meanwhile, the two magnetic resonance imaging units are designed in a split mode, and the sliding adjustment position is performed on the ball slide rail to realize accurate control of the distance between the magnets, which can significantly improve the magnetic field uniformity of the imaging area, optimize the treatment accuracy, and cooperate with high-strength and uniform magnetic field coverage, so that the system can meet diversified treatment needs.

[0036] 6.The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, the image processing module comprises a multi-dimensional image fusion unit, a dynamic contour optimization unit and an edge refinement unit which are associated with each other. By the multi-dimensional image fusion unit, image data of different modalities can be fused and processed, and multi-dimensional features of a lesion can be extracted therefrom, so that the drawn target area contour is clearer and more accurate. The fusion processing can help the system identify the fine structure of the lesion and exclude the interference of adjacent tissues. The dynamic contour optimization unit automatically adjusts the target area contour in combination with real-time image data of a patient provided by the open MR imaging subsystem, so as to cope with possible slight displacement or deformation of the lesion during treatment. The processing technology of the dynamic contour optimization unit can keep the target area drawing in the best state during the entire treatment process, thereby improving the treatment accuracy. The edge refinement unit refines the target area contour boundary during the drawing process, which can further improve the accuracy of the target area boundary and make the contour line of the treatment area more consistent with the actual morphology of the lesion. This processing method ensures that the treatment subsystem can effectively avoid non-diseased tissues during treatment and reduce the impact on healthy tissues.

[0037] 7.The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, the image acquisition module comprises a continuous image capture unit. By the continuous image capture unit, the patient can be positioned and verified before treatment, and continuous image acquisition of the treatment site of the patient during treatment can be performed, and a real-time dynamic image sequence can be generated. By processing and analyzing the dynamic image sequence generated by the continuous image capture unit, the image processing module can continuously update the target area state information, and provide a basis for dynamic adjustment of subsequent treatment.

[0038] 8. The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, the image processing module includes the image layered processing unit electrically connected with the continuous image capture unit, so the image captured by the image layered processing unit continuous image capture unit is processed according to level, and the image of different levels is focused on the details, position change and tissue structure features of target area respectively, through the image layered processing module, it can be ensured that the parameter adjustment module can simultaneously monitor the morphology of lesion and the change of surrounding tissue, so as to realize more accurate real-time adjustment.

[0039] 9. The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, the parameter adjustment module includes the motion cycle analysis unit and the displacement compensation unit, so the motion characteristics of each stage of the treatment site of the patient can be recognized through the motion cycle analysis unit, the motion peak or trough of the next treatment site of the patient is predicted in advance, so as to accurately control the action time of the treatment subsystem; through the displacement compensation unit, it can be ensured that the treatment focus of the treatment subsystem always keeps accurate alignment with the lesion area in the target area in the whole treatment process.

[0040] 10. The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, the parameter adjustment module includes the motion cycle analysis unit and the displacement compensation unit. So, the motion frequency, amplitude and rhythm of the patient can be analyzed in real time through the motion cycle analysis unit, a dynamic model of the motion cycle is generated and sent to the displacement compensation unit, and the displacement compensation unit is used to adjust the position of the treatment subsystem after receiving the dynamic model information of the motion cycle analysis unit, so as to compensate for the movement of the target area position caused by the movement of the treatment site of the patient, and through the fine adjustment instruction immediately sent to the control subsystem when the deviation of the treatment area or the change of the lesion morphology is detected, it can be ensured that the focus position and treatment intensity of the device match the target area.

[0041] 11. The image-guided therapy system based on open magnetic resonance imaging provided by the utility model, the parameter adjustment module further includes the dynamic synchronization unit associated with the motion cycle analysis unit and the displacement compensation unit, so when the motion cycle analysis unit detects that the motion of the treatment site of the patient is at the peak or trough, the treatment subsystem can be controlled to optimize the release time of treatment energy to avoid the unstable period and improve the treatment effect. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0043] Figure 1 It is a top view of the open MR imaging subsystem of embodiment 1 in the present application;

[0044] Figure 2 It is a front view of the open MR imaging subsystem of embodiment 1 in the present application;

[0045] Figure 3 It is a side view of the open MR imaging subsystem of embodiment 1 in the present application;

[0046] Figure 4 It is a perspective view of the open MR imaging subsystem of embodiment 1 in the present application;

[0047] Figure 5 It is a top view of the open MR imaging subsystem of embodiment 2 in the present application;

[0048] Figure 6 It is a side view of the open MR imaging subsystem of embodiment 2 in the present application;

[0049] Figure 7 It is a perspective view of the open MR imaging subsystem of embodiment 2 in the present application;

[0050] Figure 8 It is a top view of the open MR imaging subsystem of embodiment 3 in the present application;

[0051] Figure 9 It is a front view of the open MR imaging subsystem of embodiment 3 in the present application;

[0052] Figure 10 It is a side view of the open MR imaging subsystem of embodiment 3 in the present application;

[0053] Figure 11 It is a perspective view of the open MR imaging subsystem of embodiment 3 in the present application;

[0054] Figure 12 It is a top view of the open MR imaging subsystem of embodiment 4 in the present application;

[0055] Figure 13It is the front view of the open type MR imaging subsystem of the embodiment 4 in the utility model;

[0056] Figure 14 It is the side view of the open type MR imaging subsystem of the embodiment 4 in the utility model;

[0057] Figure 15 It is the back view of the open type MR imaging subsystem of the embodiment 4 in the utility model;

[0058] Figure 16 It is the perspective view of the open type MR imaging subsystem of the embodiment 4 in the utility model;

[0059] Figure 17 It is the side view of the open type MR imaging subsystem of the embodiment 5 in the utility model;

[0060] Figure 18 It is the top view of the open type MR imaging subsystem of the embodiment 5 in the utility model;

[0061] Figure 19 It is the front view of the open type MR imaging subsystem of the embodiment 5 in the utility model;

[0062] Figure 20 It is the back view of the open type MR imaging subsystem of the embodiment 5 in the utility model.

[0063] Mark explanation: 1, base station;2, sliding base;3, magnetic resonance imaging unit;4, support;5, examination bed. Specific implementation

[0064] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of protection of the utility model.

[0065] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0066] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;It can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0067] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0068] The embodiments of the utility model are described below in combination with Figures 1 to 20

[0069] According to the embodiments of the utility model, an image-guided therapy system based on open magnetic resonance imaging is provided, which comprises an open MR imaging subsystem, a therapy subsystem and a control subsystem which are electrically connected with each other. Specifically, the open MR imaging subsystem comprises two magnetic resonance imaging units 3, which are oppositely arranged, close to each other on the side and arranged at a certain distance apart. The magnetic resonance imaging unit 3 comprises a shell and a magnetic resonance imaging magnet arranged in the shell. The open MR imaging subsystem comprises an image acquisition module and an image processing module which are electrically connected with each other. The image acquisition module and the image processing module are used to acquire real-time images of the patient before and during treatment and mark the target area and the treatment area.

[0070] The therapy subsystem is electrically connected with the open MR imaging subsystem. The open MR imaging subsystem is used to provide image support for the therapy subsystem. The therapy subsystem comprises at least one of an ablation therapy subsystem, a surgical therapy subsystem, a teletherapy subsystem and a brachytherapy subsystem. The therapy subsystem comprises a therapy preparation module and a therapy implementation module which are electrically connected with each other. The therapy preparation module is used to be responsible for treatment positioning planning. The therapy implementation module is used to accurately implement treatment on the patient.

[0071] The control subsystem is electrically connected with the open MR imaging subsystem and the therapy subsystem. The control subsystem comprises a data synchronization module and a parameter adjustment module which are electrically connected with each other. The data synchronization module is used to realize data transmission between the open MR imaging subsystem and the therapy subsystem. The parameter adjustment module is used to feed back dynamic treatment parameters to the therapy subsystem according to the real-time images acquired by the open MR imaging subsystem.

[0072] ​The image-guided therapy system based on the open magnetic resonance imaging can significantly expand the uniform magnetic field area by synthesizing the external magnetic fields of the two magnets into a uniform central magnetic field, provide a larger magnetic field diameter of the imaging area, and improve the overall imaging effect. By setting the treatment subsystem in electrical connection with the open MR imaging subsystem, the treatment subsystem is integrated with the open MR imaging subsystem, and the open MR imaging subsystem provides image or video guidance for the treatment subsystem, which can help doctors perform high-precision surgical operations, improve the precision and safety of the operation, and improve the surgical treatment effect. The treatment subsystem includes but is not limited to any one of an ablation treatment subsystem, a surgical treatment subsystem, a teletherapy subsystem, and a brachytherapy subsystem, and any one of the treatment subsystems can be integrated with the open MR imaging subsystem to form different image-guided therapy modes, and then independently run for specific treatment methods to meet various clinical needs. The data transmission between the open MR imaging subsystem and the treatment subsystem is realized through the data synchronization module, and the real-time image obtained by the open MR imaging subsystem is fed back to the treatment subsystem through the parameter adjustment module to realize real-time tracking of the influence of patient movement on treatment, facilitate dynamic adjustment of the treatment process according to the movement of the treatment site of the patient during the treatment process, improve the treatment effect, and improve the real-time, precision and flexibility of the treatment, which can meet various clinical treatment needs.

[0073] In an embodiment, the open MR imaging subsystem includes the content of the patent "Open Magnetic Resonance Imaging System" with application number 202410726438.1 (publication number 2024060600799280), which is not repeated here.

[0074] In an embodiment, an electromagnetic shielding structure is arranged on the open MR imaging subsystem between the magnetic resonance imaging unit 3 and the power supply unit, and the electromagnetic shielding structure includes a double-layer copper mesh and an aluminum foil. In this way, electromagnetic interference between the subsystems can be reduced, and radio frequency interference can be effectively isolated between the modules. In particular, local shielding is added on the magnet power supply line to isolate the electromagnetic wave influence caused by current fluctuation. As a convertible implementation, the electromagnetic shielding structure can also include other metal materials that can achieve electromagnetic shielding.

[0075] In an embodiment, the open MR imaging subsystem adopts a differential signal mode in the transmission of control signals, and through the design of double-line differential transmission, the interference of external electromagnetic noise on the signal can be effectively eliminated, and the stability and accuracy of the control signal can be maintained. In particular, electromagnetic interference can be effectively suppressed in the high-current area.

[0076] In an embodiment, the open MR imaging subsystem is integrated with an associated main control system and an interference monitoring module, the main control system is adapted to adjust the electromagnetic shielding state and optimize the control parameters, and the interference monitoring module is adapted to monitor the electromagnetic interference intensity of the imaging area and feed back the monitoring information to the main control system. In this way, when the magnetic resonance imaging unit 3 is interfered by electromagnetic interference, the electromagnetic shielding state can be adjusted or the control parameters can be optimized according to the interference condition, so as to ensure that the imaging quality and treatment accuracy are not affected by electromagnetic interference.

[0077] In an embodiment, the bottom of each of the two magnetic resonance imaging units 3 is provided with a sliding base 2, and the sliding base 2 facilitates sliding of the magnetic resonance imaging unit 3 to adjust the distance between the two magnetic resonance imaging units 3. Specifically, the open MR imaging subsystem further includes a driving mechanism connected to the sliding base 2 and the main control system of the open MR imaging subsystem, and the driving mechanism facilitates movement of the sliding base 2. Specifically, the driving mechanism is an electric motor. As an alternative embodiment, the bottom of one of the magnetic resonance imaging units 3 is provided with a sliding base 2, and the distance between the two magnetic resonance imaging units 3 is adjusted by moving only one of the magnetic resonance imaging units 3. As an alternative embodiment, the driving mechanism can be a pneumatic cylinder, a hydraulic cylinder, a mechanical drive, an electric drive, a pneumatic drive, an electromagnetic drive, a servo drive, or a hybrid drive.

[0078] The sliding base 2 is provided with a support frame made of damping material. In this way, the vibration caused by the movement of the treatment instrument or the patient can be absorbed by the support frame made of damping material, and the interference of such vibration on the position of the magnet can be reduced. Specifically, the support frame is designed in a double-layer structure, which can increase the shock resistance of the sliding base 2, and thus is conducive to improving the overall shock resistance of the open MR imaging subsystem. Specifically, the damping material can be rubber or a polymer composite material. As an alternative embodiment, the support frame can be designed in a single-layer structure, or a three-layer structure, or more layers, which is not limited here. As an alternative embodiment, the damping material can be a viscous damping material or a liquid damping material.

[0079] In an embodiment, the sliding base 2 is arranged on a base 1, and a damping structure is arranged at the connection between the sliding base 2 and the base 1; specifically, the damping structure is a damping pad. In this way, the damping pad can ensure that the magnetic resonance imaging unit 3 can be properly damped in the sliding or stationary state, effectively avoiding the deviation of the magnet position. Specifically, the damping pad can also use rubber layers with different hardnesses to adapt to different load requirements, which can effectively avoid the slight deviation of the magnet position. As a convertible embodiment, two sliding bases 2 can be arranged on two bases 1 respectively, and a damping structure is arranged between each sliding base 2 and the corresponding base 1. As a convertible embodiment, the damping pad can also use polyurethane, silicone, etc.

[0080] In an embodiment, the base 1 is also provided with a ball slide and a position locking mechanism located on the ball slide. Specifically, the ball slide is a precision ball slide, and the precision ball slide is arranged between the base 1 and the sliding base 2. Specifically, the locking mechanism includes but is not limited to any one of an electromagnetic lock or a mechanical clamping lock, and specifically, the locking mechanism is used to fixedly connect the magnetic resonance imaging unit 3 after the sliding base 2 drives the magnetic resonance imaging unit 3 to move to a preset distance. In this way, by using a precision ball slide, the low friction and high stability of the sliding base 2 during sliding can be ensured; at the same time, the split design of the two magnetic resonance imaging units 3, by sliding and adjusting the position on the precision ball slide, the precise control of the magnet spacing can be realized, which can significantly improve the magnetic field uniformity of the imaging area, optimize the treatment accuracy, and cooperate with the high-strength and uniform magnetic field coverage. The system can meet the diversified treatment needs. After the sliding adjustment is completed, the position of the magnetic resonance imaging unit 3 with the magnet can be fixed by the electromagnetic lock or the mechanical clamping lock, so as to avoid accidental displacement of the magnetic resonance imaging unit 3 during treatment. Specifically, the ball slide uses wear-resistant materials (such as reinforced steel or nickel-plated copper alloy), which can provide longer service life and precise positioning effect under high load conditions. As a convertible embodiment, the ball slide can also use bearing steel or ceramic materials.

[0081] In an embodiment, the two rectangular magnetic resonance imaging units are arranged opposite to each other, and the distance between them can be adjusted under the driving of the sliding base.

[0082] In an alternative embodiment, two rectangular magnetic resonance imaging units are respectively installed on two vertically opposite supports 4. The bottom support 4 fixes one magnetic resonance imaging unit to be stationary, and a driving mechanism for driving the upper support 4 to vertically lift is connected through the master control system. The driving mechanism drives the upper support 4 to vertically lift, and the upper support 4 drives the other magnetic resonance imaging unit to vertically lift in the vertical direction. The two magnetic resonance imaging units are separated by the examination bed 5. The subject lies on the examination bed 5. The driving mechanism drives the upper support 4 to vertically lift, and the two magnetic resonance imaging units are close or separated, so as to adjust the distance between the two magnetic resonance imaging units.

[0083] In an embodiment, the image processing module comprises a multi-dimensional image fusion unit, a dynamic contour optimization unit and an edge refinement unit which are associated with each other. The multi-dimensional image fusion unit is adapted to perform fusion processing on image data of different modalities to extract multi-dimensional features of the lesion. The dynamic contour optimization unit is adapted to automatically adjust the target contour in combination with real-time image data of the patient provided by the open MR imaging subsystem. The edge refinement unit is adapted to refine the boundary of the target contour during the delineation process.

[0084] In this way, the multi-dimensional image fusion unit can perform fusion processing on image data of different modalities to extract multi-dimensional features of the lesion, which can make the delineated target contour clearer and more accurate. This fusion processing can help the system identify the fine structure of the lesion and exclude the interference of adjacent tissues.

[0085] The dynamic contour optimization unit automatically adjusts the target contour in combination with real-time image data of the patient provided by the open MR imaging subsystem, which can cope with the possible slight displacement or deformation of the lesion during treatment. This processing technology of the dynamic contour optimization unit can keep the target contour in the best state during the entire treatment process, thereby improving the treatment accuracy.

[0086] The edge refinement unit refines the boundary of the target contour during the delineation process, which can further improve the accuracy of the target boundary and make the contour line of the treatment area more conform to the actual morphology of the lesion. This processing method ensures that the treatment subsystem can effectively avoid non-lesion tissues and reduce the impact on healthy tissues when performing treatment.

[0087] In an embodiment, the parameter adjustment module comprises a motion cycle analysis unit and a displacement compensation unit which are associated with each other, the motion cycle analysis unit is adapted to analyze the frequency, amplitude and rhythm of the motion of the patient in real time, generate a dynamic model of the motion cycle and send it to the displacement compensation unit; the displacement compensation unit is adapted to adjust the position of the treatment subsystem after receiving the dynamic model information from the motion cycle analysis unit, so as to compensate for the movement of the target region caused by the motion of the treatment site of the patient. In this way, the motion characteristics of each stage of the motion of the treatment site of the patient can be identified by the motion cycle analysis unit, and the motion peak or trough of the next treatment site of the patient can be predicted in advance, so that the action time of the treatment subsystem can be accurately controlled; through the displacement compensation unit, it can be ensured that the treatment focus of the treatment subsystem is always accurately aligned with the lesion area in the target region during the entire treatment process. Specifically, the motion of the treatment site of the patient includes the motion of the treatment site of the patient caused by breathing, slight motion unconsciously emitted by the patient, etc.

[0088] In an embodiment, the parameter adjustment module further comprises a dynamic synchronization unit associated with the motion cycle analysis unit and the displacement compensation unit, the dynamic synchronization unit is adapted to control the motion rhythm of the treatment subsystem to be adjusted synchronously with the motion rhythm of the treatment site of the patient during the detection of the motion of the treatment site of the patient by the motion cycle analysis unit, and make the motion rhythm of the treatment subsystem synchronized with the motion rhythm of the treatment site of the patient. In this way, when the motion of the treatment site of the patient is detected by the motion cycle analysis unit to be at a peak or trough, the release time of the treatment energy of the treatment subsystem can be controlled to avoid the unstable period, so as to improve the treatment effect.

[0089] In an embodiment, the open MR imaging subsystem further comprises a continuous image capturing unit electrically connected with the parameter adjustment module, the continuous image capturing unit is adapted to continuously capture images of the treatment site of the patient during the treatment, and generate a real-time dynamic image sequence; in this way, the dynamic generated by the continuous image capturing unit can be processed and analyzed, so that the image processing module can continuously update the target region state information and provide a basis for subsequent dynamic adjustment of the treatment.

[0090] In an embodiment, the image processing module further comprises an image hierarchical processing unit electrically connected with the continuous image capturing unit, the image hierarchical processing unit is adapted to process the images captured by the continuous image capturing unit by levels, and focus the images of different levels on the details, position changes and tissue structure characteristics of the target region respectively. In this way, through the image hierarchical processing module, the parameter adjustment module can monitor the changes of the morphology of the lesion and the surrounding tissue at the same time, so as to realize more accurate real-time adjustment;

[0091] In one embodiment, the parameter adjustment module comprises a feedback and adjustment unit associated with the continuous image capturing unit, the image layering processing unit; specifically, the feedback and adjustment unit is adapted to evaluate the current treatment effect of the treatment sub-system on the patient according to the real-time evaluation of the full-range image captured by the continuous image capturing unit, and to fine-tune the treatment sub-system parameters or treatment direction according to the evaluation information. In this way, through the feedback and adjustment unit, when the parameter adjustment module detects that the treatment area deviates or the lesion morphology changes, the fine-tuning instruction can be immediately issued to the control sub-system to ensure that the focus position and treatment intensity of the device match the target area.

[0092] In one embodiment, the treatment sub-system includes but is not limited to any one of the ablation treatment sub-system, the surgical treatment sub-system, the teletherapy sub-system, and the brachytherapy sub-system. In this way, any one of the treatment sub-systems can be integrated with the open MR imaging sub-system to form different image-guided treatment modes, and then independently operated for specific treatment methods to meet various clinical needs. Specifically, the treatment sub-system is detachably electrically connected to one side of the open MR imaging sub-system, and the treatment sub-system is adapted to be detached and replaced with a treatment sub-system having a different treatment mode effect according to treatment needs. In this way, different treatment sub-systems can be replaced according to different treatment needs, without the need for each treatment sub-system to be equipped with an open MR imaging sub-system, effectively expanding the scope of application, improving the applicability of the image-guided treatment system, and further reducing equipment expenditure.

[0093] In one specific embodiment, the treatment sub-system is an ablation treatment sub-system: suitable for cryoablation or HIFU thermal ablation, and capable of achieving precise and efficient tumor ablation by real-time imaging guided precise positioning of the lesion by the open MR imaging sub-system.

[0094] In an alternative specific embodiment, the treatment sub-system is a surgical treatment sub-system: capable of providing real-time image guidance of the surgical area to help doctors perform high-precision surgical operations and improve the precision and safety of the operation.

[0095] In an alternative specific embodiment, the treatment sub-system is a teletherapy sub-system: capable of ensuring the effectiveness and safety of teletherapy by guiding the radiation source to act precisely on the lesion through MRI imaging.

[0096] In an alternative specific embodiment, the treatment sub-system is a brachytherapy sub-system (afterloading treatment): capable of facilitating real-time positioning through real-time imaging by the open MR imaging sub-system, thereby guiding the precise distribution of the radioactive source at the lesion site to achieve effective treatment purposes.

[0097] Of course, in other alternative embodiments, the treatment subsystem can be other forms of subsystems, or be composed of multiple subsystems.

[0098] The combination of the above-mentioned specific treatment subsystem and open MR imaging subsystem will be described as follows:

[0099] In embodiment 1, as shown in the figure, the treatment subsystem adopts a cryoablation treatment subsystem: Figures 1-4

[0100] In this embodiment, the patient lies on the treatment bed, and the split magnets of the open MR imaging subsystem are located on the left and right sides of the patient. The split magnets can accurately adjust the magnet spacing according to the patient's body size and the target treatment area, so as to achieve the best imaging effect. Under the real-time imaging monitoring of the open MR imaging subsystem, the cryoablation treatment subsystem can accurately act on the lesion area, effectively avoiding damage to the surrounding healthy tissues, thereby ensuring the efficiency and safety of the treatment process.

[0101] In this embodiment, the open MR imaging subsystem realizes flexible adjustment of the magnet spacing through the design of horizontally placed split magnets combined with a precise guide rail system, which provides significant improvement and unique integrated advantages for ablation treatment.

[0102] In this way, the open magnet layout significantly expands the operating space. The split magnets are located on the left and right sides of the patient, and the doctor can flexibly approach the lesion area from multiple angles and accurately adjust the ablation equipment. The split magnets are placed on the horizontal guide rail, and through the electric or manual adjustment device, the doctor can pull the magnets apart during the preparation or treatment process to provide more space for equipment adjustment and patient care. When high-precision imaging is needed, the system can quickly pull the magnets close to the preset spacing to form a high-strength and uniform magnetic field, significantly improving the imaging quality and accuracy. This flexible spacing adjustment method enables the system to adapt to different treatment and imaging needs without changing the overall structure.

[0103] Under real-time imaging monitoring, the open magnet structure further enhances the precision and safety of ablation treatment. The system continuously provides high-quality MRI images during treatment, and uses image tracking algorithms to realize dynamic monitoring of the lesion area, so that the cryoablation equipment can be closely aligned with the lesion area, effectively reducing damage to the surrounding healthy tissues. The design of the open magnet also reduces the patient's sense of claustrophobia, helping the patient to receive treatment in a relaxed state, reducing unconscious activities caused by tension, and thus improving the continuity and stability of the treatment.

[0104] ​In the integration process, the electromagnetic compatibility of the ablation subsystem is particularly optimized to overcome signal interference in a strong magnetic field environment. The system implements multi-layer electromagnetic shielding on key components of the ablation device and uses diamagnetic materials to construct the support structure, ensuring stable operation of the device in the MRI magnetic field. At the same time, the circuit layout of the subsystem is optimized to ensure stable signal transmission under high magnetic field strength, avoiding data loss or delay.

[0105] To achieve high-precision dynamic synchronization, the system has a deep integration of data synchronization between the ablation device and the MRI imaging system. The high-speed data synchronization module can collect and analyze image information in real time and feed back the lesion position changes to the ablation device, ensuring real-time collaboration between the ablation device and the imaging system. This function is particularly critical during treatment, as it can automatically adjust positioning and energy output when the lesion position changes slightly, ensuring the accuracy of the ablation operation and avoiding treatment errors caused by lesion drift.

[0106] In addition, the spatial advantage of the open magnet supports the modular installation of the ablation device, allowing the probe to be flexibly adjusted according to the patient's body size and lesion location. The probe adjustment structure supports fine adjustment of the angle, depth, and focal position, ensuring that energy is focused on the lesion area at the most appropriate path and angle. This modular design not only facilitates personalized adjustment but also facilitates device maintenance and replacement, ensuring the stability of the system over a long period of operation.

[0107] Compared to a closed system, the open magnet structure also has excellent heat management characteristics. The open space allows the heat generated during ablation to dissipate quickly, effectively preventing excessive local temperature and reducing the risk of thermal damage to surrounding healthy tissue. This feature is particularly important in high-energy ablation therapy, significantly improving treatment safety.

[0108] In summary, the present embodiment provides safe and reliable technical support for personalized high-precision ablation therapy through the efficient integration of an open magnet and an ablation subsystem, combined with guide rail adjustment, real-time imaging, and precise locking functions, significantly improving the overall performance and clinical application value of the system, meeting the needs of modern medicine for flexible and efficient treatment platforms.

[0109] Embodiment 2, as shown in Figures 5-7 the treatment subsystem uses a HIFU thermal ablation treatment subsystem:

[0110] In this embodiment, the patient lies on the treatment bed, and the split magnets of the open MR imaging subsystem are located on the upper and lower sides of the patient. The split magnets can accurately adjust the magnet spacing according to the patient's body size and the needs of the target treatment area to achieve the best imaging effect. Under the real-time imaging monitoring of MRI, the HIFU radiofrequency ablation treatment subsystem can accurately act on the lesion area, effectively avoiding damage to the surrounding healthy tissues, thereby ensuring the efficiency and safety of the treatment process.

[0111] In this embodiment, the open MR imaging subsystem is applied to HIFU thermal ablation treatment. Through the upper and lower split magnets, the system overcomes the space and operation limitations of traditional closed MRI systems, providing unique advantages for high-precision thermal ablation treatment.

[0112] Firstly, the split magnets are located on the upper and lower sides of the patient, allowing the system to accurately adjust the magnet spacing according to the patient's body size and the needs of the target treatment area to provide the best imaging effect. The flexible support structure at the upper end of the magnet supports its upward movement during operation, thereby increasing the operating space for the doctor. When high-precision imaging is required, the upper magnet can quickly move down to the preset spacing to form a high-strength, uniform magnetic field, achieving the best imaging effect. This up-and-down adjustable design not only ensures smooth treatment, but also effectively meets different treatment needs.

[0113] Under the real-time imaging monitoring of MRI, the HIFU thermal ablation subsystem can accurately act on the lesion area. High-intensity focused ultrasound waves are focused on the lesion under the guidance of MRI with extremely high positioning accuracy. Using image tracking technology, the system can monitor the position changes of the lesion in real time and dynamically adjust the energy output, ensuring that the energy is always accurately applied to the target area. The real-time imaging technology of the open magnet structure improves the accuracy of the treatment process, allowing the HIFU ablation process to effectively avoid damage to the surrounding healthy tissues, significantly improving the safety of the treatment.

[0114] During integration, the present embodiment optimizes the electromagnetic compatibility of the HIFU thermal ablation subsystem, overcoming the signal interference problem in a strong magnetic field environment. The system implements multi-layer electromagnetic shielding on key components and uses anti-magnetic materials to construct the HIFU device support structure, ensuring stable operation of the device in the MRI magnetic field. At the same time, the circuit layout of the subsystem is optimized to ensure the stability of signal transmission under high magnetic field strength, avoiding data loss or delay during treatment.

[0115] In addition, the guide rail system of the upper and lower split magnets is also equipped with precise positioning and locking devices to ensure that the magnets remain stable during imaging and treatment. Compared with traditional closed systems, the open magnet structure not only provides flexible operating space, but also significantly improves the clarity and accuracy of imaging, allowing HIFU thermal ablation to be completed more safely and accurately.

[0116] In summary, the present embodiment provides efficient and precise technical support for HIFU thermal ablation treatment through the design of adjustable split magnets and real-time imaging control, significantly improving the overall performance and clinical application value of the system.

[0117] Embodiment 3, as shown in Figures 8-11 The treatment subsystem adopts a surgical treatment subsystem:

[0118] In the present embodiment, the patient lies on the treatment bed, and the open MR imaging subsystem supports complex surgical operations through real-time imaging. The split magnets are arranged on the left and right sides of the patient, forming a spacious operating space, allowing the doctor to accurately perform surgical operations under the guidance of MRI images. Through this layout, the doctor can observe the key anatomical structures and lesion areas in real time, ensuring the accuracy and safety of the surgical process. The upper magnet can be adjusted up and down according to the needs of the surgical area to provide the best imaging angle, helping the doctor to avoid important tissues and organs, effectively reducing the risk of surgery.

[0119] In the present embodiment, the open image-guided treatment system provides real-time imaging support for surgical operations through the design of split magnets horizontally placed on the left and right sides of the patient. The split magnet layout overcomes the space and operation limitations of traditional closed MRI systems, providing a spacious operating space and high-precision imaging support for complex surgical operations.

[0120] In use, the patient lies on the treatment bed, and the split magnets are respectively located on the left and right sides of the patient. According to the surgical area and specific operation requirements, the system can flexibly adjust the distance between the magnets to ensure the best imaging effect. During the surgical preparation stage, the split magnets can be pulled apart along the horizontal guide rail to provide a wider operating space for the doctor, facilitating surgical preparation and equipment arrangement. When high-precision imaging is required, the magnets can be quickly pulled close to the preset distance to form a high-strength and uniform magnetic field, ensuring the clarity and imaging accuracy of MRI images.

[0121] This horizontally adjustable magnet layout allows MRI to provide continuous real-time images during the operation, helping the doctor to clearly distinguish key anatomical structures and lesion areas in the operation, avoiding damage to important surrounding tissues, thereby effectively reducing the risk of surgery. Real-time image guidance of MRI ensures that the doctor can monitor the changes in the target area throughout the entire surgical process, providing reliable support for precise operations.

[0122] During integration, this implementation optimized the compatibility between the MRI imaging subsystem and the surgical equipment. The system ensures stable operation of the equipment in the MRI magnetic field environment by employing antimagnetic materials and multi-layer electromagnetic shielding on key components of the surgical equipment. The horizontal guide rail system for the split magnet is also equipped with a precise positioning and locking device to prevent accidental movement of the magnet during surgery, ensuring magnetic field stability and image quality in the imaging area.

[0123] With its split magnet design and real-time imaging support, the open MR imaging subsystem provides an efficient and reliable platform for complex surgical procedures. Compared to traditional closed systems, the horizontally arranged open magnet design significantly expands the operating space and improves imaging clarity and accuracy, making the surgical process safer and more controllable.

[0124] In summary, this embodiment, through its horizontally placed split magnet layout, flexible guide rail adjustment, and real-time imaging support, provides high-precision operational support for complex surgeries, significantly improving the overall performance and clinical application value of the system, and offering an innovative solution for modern image-guided surgery.

[0125] Implementation method 4, such as Figures 12-16 As shown, the treatment subsystem employs a teletherapy subsystem:

[0126] In this embodiment, the patient undergoes treatment in a standing position. An open-type MR imaging subsystem guides the teleradiotherapy subsystem, ensuring precise beam delivery to the lesion area. Split-type magnet systems are positioned on either side of the patient, maintaining appropriate spacing to create an optimized imaging area. Before beam irradiation, the open-type MR imaging subsystem accurately images the tumor site, enabling precise patient positioning. During irradiation, the system monitors the tumor location in real-time to achieve precise treatment and guidance, minimizing impact on healthy tissue. An intelligent control subsystem automatically adjusts the radiation dose, ensuring the safety and efficiency of the treatment.

[0127] In this embodiment, the open MR imaging subsystem is used for teleradiation. It ensures that the radiation beam is accurately positioned in the lesion area through real-time image guidance, while realizing a flexible magnet rail design to meet the operational requirements and imaging accuracy of the treatment.

[0128] In use, the patient is positioned in a standing position during treatment, with the split magnet system arranged horizontally on both sides of the patient, maintained at an appropriate distance by a precisely controlled rail system to form an optimized imaging area. The rail design allows the split magnets to be adjusted flexibly in distance during treatment preparation and imaging. During patient positioning, the rail system can pull the magnets closer to form a high-intensity, uniform magnetic field area to ensure MRI imaging quality and achieve accurate imaging of the tumor site; during beam irradiation, the system can pull the magnets apart according to operational needs to provide sufficient operational space for the radiotherapy device, ensuring that the beam can be aligned with the lesion area without obstacles.

[0129] During treatment preparation, the open MR imaging subsystem performs high-resolution imaging of the tumor area to help doctors achieve precise patient positioning. Through the intelligent control subsystem, the system can fine-tune the patient's body position after imaging to ensure the optimal alignment of the radiation beam with the tumor area. During radiotherapy irradiation, the MRI imaging subsystem continuously monitors the tumor position in real time, captures any slight body position changes, and dynamically adjusts the direction and dose of beam irradiation to minimize the impact on surrounding healthy tissues.

[0130] To ensure the safety and efficiency of radiotherapy, the intelligent control subsystem automatically adjusts the radiation dose. The system precisely controls the radiation output based on real-time imaging feedback to ensure that the treatment dose is within a safe range, meeting treatment needs while protecting healthy tissues from excessive radiation. The intelligent control subsystem can dynamically adjust the patient's position and beam path within millimeter-level ranges to respond to the patient's minor movements or posture adjustments, ensuring that the radiation beam is always aligned with the target lesion area.

[0131] In summary, this embodiment provides high-precision image guidance and dose control support for teletherapy through the open MR imaging subsystem, flexible rail adjustment, and intelligent control. Compared with traditional closed systems, the open split magnet design not only expands the treatment operation space but also significantly improves the accuracy of imaging and treatment, ensuring the safety and effectiveness of the radiotherapy process, providing an innovative and flexible solution for modern radiotherapy.

[0132] Embodiment 5, as shown in Figures 17-20 the treatment subsystem uses a brachytherapy treatment subsystem:

[0133] In this embodiment, the patient lies on the treatment bed, and the open MR imaging subsystem's magnet is arranged on both sides of the patient, forming a spacious operating space, ensuring that the doctor has sufficient operational freedom during brachytherapy, while generating a uniform magnetic field region to provide high-quality MRI imaging support. With the help of MRI imaging, the doctor can accurately locate the tumor area, thereby assisting in precisely controlling the placement position and dose of radioactive particles or other brachytherapy sources, and adjusting the position and radiation dose of the radiation source in real time during treatment, ensuring the effective action of the radiation source in the tumor area, while maximizing the safety of healthy tissues.

[0134] In this embodiment, the open MR imaging subsystem is applied to brachytherapy, and the split magnet is arranged on both sides of the patient to form a spacious operating space and a uniform magnetic field region to provide support for high-quality MRI imaging, thereby ensuring the accuracy and safety of the brachytherapy process.

[0135] In use, the patient lies on the treatment bed, and the split magnet system is arranged in the upper and lower positions, and the flexible support structure allows the upper magnet to be adjusted up and down as needed. In the preparation stage, the magnet is moved up to provide more operating space for the doctor, facilitating accurate placement of radioactive particles or other brachytherapy sources; when imaging, the upper magnet is reset to the preset position to ensure the uniformity of the magnetic field in the imaging region and the imaging quality.

[0136] With the help of real-time imaging of open MRI, the doctor can accurately locate the tumor area, thereby precisely controlling the placement position and dose of radioactive particles or other radiation sources. Continuous image feedback from MRI allows the doctor to dynamically monitor the lesion position and treatment progress, and adjust the positioning and dose output of the radiation source in real time according to the slight changes in the lesion, ensuring that the radiation energy is concentrated on the lesion area, and avoiding unnecessary radiation damage to the surrounding healthy tissues.

[0137] In order to further improve the safety and effectiveness of treatment, the system integrates an intelligent control subsystem that analyzes image feedback in real time, automatically optimizes radiation dose distribution, and dynamically adjusts the position of the radiation source according to the subtle movements in the patient's body, ensuring accurate treatment. Intelligent control can also issue warnings when the lesion deviates or the tissue changes, so that the doctor can intervene manually if necessary, ensuring the efficiency and safety of the entire treatment process.

[0138] Through the split magnet design arranged on the upper and lower sides, the flexible operating space, and the high-quality MRI real-time imaging support, this embodiment provides a precise and safe brachytherapy platform, effectively improving the accuracy of radiotherapy, while protecting healthy tissues, and providing important innovative support for modern image-guided radiotherapy.

[0139] In summary, the image-guided therapy system based on the open magnetic resonance imaging, by synthesizing a uniform central magnetic field through the outer magnetic field of two magnets, significantly expands the uniform magnetic field area, provides a larger imaging area magnetic field diameter, and improves the overall imaging effect. By setting the treatment subsystem in electrical connection with the open MR imaging subsystem, the treatment subsystem is integrated with the open MR imaging subsystem, and the open MR imaging subsystem provides image or image guidance for the treatment subsystem, which can help doctors perform high-precision surgical operations, improve the precision and safety of the operation, and improve the surgical treatment effect. The treatment subsystem includes but is not limited to any one of the ablation treatment subsystem, the surgical treatment subsystem, the teletherapy subsystem, and the brachytherapy subsystem, and any one of the treatment subsystems can be integrated with the open MR imaging subsystem to form different image-guided therapy modes, and then independently run for specific treatment methods, so as to meet various clinical needs. The data transmission between the open MR imaging subsystem and the treatment subsystem is realized through the data synchronization module, and the real-time image obtained by the open MR imaging subsystem is fed back to the treatment subsystem through the parameter adjustment module. The dynamic treatment parameters are used to realize real-time tracking of the influence of patient movement on treatment, facilitate dynamic adjustment of the treatment process according to the movement of the treatment site of the patient during the treatment process, improve the treatment effect, and improve the real-time, precision and flexibility of the treatment, which can meet various clinical treatment needs.

[0140] Obviously, the above embodiments are only examples for clearly illustrating, but not limiting the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An open magnetic resonance imaging based image guided therapy system, characterized by, The system comprises: An open MR imaging subsystem comprising two magnetic resonance imaging units (3) arranged opposite to each other, side by side and at a distance, the magnetic resonance imaging units (3) comprising a housing and a magnetic resonance imaging magnet arranged in the housing; the open MR imaging subsystem comprising an image acquisition module and an image processing module electrically connected to each other, the image acquisition module and the image processing module being configured to acquire real-time images of a patient before and during treatment and to mark a target region and a treatment region; A treatment subsystem electrically connected to the open MR imaging subsystem, the open MR imaging subsystem being configured to provide image support for the treatment subsystem, the treatment subsystem comprising at least one of an ablation treatment subsystem, a surgical treatment subsystem, a teletherapy subsystem and a brachytherapy subsystem; the treatment subsystem comprising a treatment preparation module and a treatment implementation module electrically connected to each other, the treatment preparation module being configured to be responsible for treatment positioning planning, and the treatment implementation module being configured to accurately implement treatment on the patient; A control subsystem electrically connected to the open MR imaging subsystem and the treatment subsystem, the control subsystem comprising a data synchronization module and a parameter adjustment module electrically connected to each other, the data synchronization module being configured to realize data transmission between the open MR imaging subsystem and the treatment subsystem, and the parameter adjustment module being configured to feed back dynamic treatment parameters to the treatment subsystem according to the real-time images acquired by the open MR imaging subsystem.

2. The open magnetic resonance imaging based image guided therapy system of claim 1, wherein, The treatment subsystem is detachably connected to one side of the open MR imaging subsystem.

3. Open magnetic resonance imaging based image guided therapy system according to claim 1 or 2, characterized in that, The open MR imaging subsystem comprises: A sliding base (2) arranged at the bottom of at least one of the magnetic resonance imaging units (3) and configured to drive the magnetic resonance imaging unit (3) to slide to adjust the distance between the two magnetic resonance imaging units (3); A driving mechanism connected to the sliding base (2) and configured to drive the sliding base (2) to move; And / or a locking structure configured to fixedly connect the magnetic resonance imaging unit (3) after the sliding base (2) drives the magnetic resonance imaging unit (3) to move to a preset distance.

4. The open magnetic resonance imaging based image guided therapy system of claim 3, wherein, The sliding base (2) is provided with a support frame made of damping material; And / or the driving mechanism is an electric motor; And / or the locking structure is an electromagnetic lock and / or a mechanical lock; And / or the open MR imaging subsystem comprises: A base station arranged below the sliding base (2), and a damping structure is arranged at the connection between the sliding base (2) and the base station (1).

5. The open magnetic resonance imaging based image guided therapy system of claim 4, wherein, A ball slide rail is arranged on the base station (1) and between the base station (1) and the sliding base (2).

6. The open magnetic resonance imaging based image guided therapy system of claim 1 or 2, wherein, The image processing module comprises a multi-dimensional image fusion unit, a dynamic contour optimization unit and an edge refinement unit which are connected to each other; the multi-dimensional image fusion unit is configured to fuse and process image data of different modalities to extract multi-dimensional features of a lesion; The dynamic contour optimization unit is configured to automatically adjust the target contour based on the real-time image of the patient acquired by the image acquisition module; and the edge refinement unit is configured to refine the boundary of the target contour during the contouring process.

7. The open magnetic resonance imaging based image guided therapy system of claim 1 or 2, wherein, The image acquisition module comprises a continuous image capturing unit configured to perform positioning verification on the patient before treatment, continuously acquire images of the treatment site of the patient during treatment, and generate a real-time dynamic image sequence.

8. The open magnetic resonance imaging based image guided therapy system of claim 7, wherein, The image processing module comprises an image hierarchical processing unit electrically connected to the continuous image capturing unit, which is configured to process the images captured by the continuous image capturing unit in a hierarchical manner, and focus the images of different levels on the details of the target area, the position changes and the tissue structure features.

9. The open magnetic resonance imaging based image guided therapy system of claim 8, wherein, The open MR imaging subsystem comprises a feedback and adjustment unit associated with the continuous image capturing unit and the image hierarchical processing unit, which is configured to evaluate the current treatment effect of the treatment subsystem on the patient in real time based on the whole-course images captured by the continuous image capturing unit, and fine-tune the parameters or treatment direction of the treatment subsystem based on the evaluation information.

10. The open magnetic resonance imaging based image guided therapy system of claim 1 or 2, wherein, The parameter adjustment module comprises a motion cycle analysis unit and a displacement compensation unit associated with each other, the motion cycle analysis unit is configured to analyze the motion frequency, amplitude and rhythm of the patient in real time, generate a dynamic model of the motion cycle and send it to the displacement compensation unit, and the displacement compensation unit is configured to adjust the position of the treatment subsystem after receiving the dynamic model information of the motion cycle analysis unit, so as to compensate for the movement of the target area caused by the motion of the treatment site of the patient.

11. The open magnetic resonance imaging based image guided therapy system of claim 10, wherein, The parameter adjustment module further comprises a dynamic synchronization unit associated with the motion cycle analysis unit and the displacement compensation unit, which is configured to adjust the motion rhythm of the treatment subsystem to be synchronized with the motion rhythm of the treatment site of the patient during the detection of the motion of the treatment site of the patient by the motion cycle analysis unit.

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