Multifunctional nuclear magnetic device, accelerator radiotherapy equipment and imaging method thereof

Abstract

The present invention discloses a multifunctional nuclear magnetic device, an accelerator radiotherapy device and an imaging method thereof. The multifunctional nuclear magnetic device comprises: a magnet, which is a hollow structure with an opening; a magnet support frame, which is used to support the magnet; and a magnet driving device, which is connected to the magnet transmission and is used to drive the magnet to rotate around its isocenter along its circumference. The present invention converts a pure imaging device into a nuclear magnetic device with multiple operating spaces by setting the magnet into a self-rotating structure, greatly expanding its applicability. It can be directly pushed to the side of the ward for patient diagnosis, and can also be used for surgical treatment, providing doctors with more means for diagnosis or treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of radiotherapy, and in particular relates to a multifunctional nuclear magnetic resonance device, an accelerator radiotherapy equipment and an imaging method thereof. Background Art

[0002] In the actual medical diagnosis process, imaging plays a major role, and currently there are two types of medical imaging equipment: CT (X-ray imaging) and MRI. MRI has the advantage of no ionizing radiation, and the combination of MRI and other treatment methods provides doctors with a wider range of treatment methods.

[0003] At present, nuclear magnetic resonance is mainly limited to large-tonnage equipment, which can weigh several tons or even 10 to 20 tons. Such equipment is currently mainly used for diagnosis, and various manufacturers have also designed small nuclear magnetic resonance, such as Hyperfine's portable nuclear magnetic resonance, which reduces the field strength and imaging area to design small nuclear magnetic resonance for head diagnosis. For example, Medtronic's head nuclear magnetic resonance equipment uses two semi-conical magnetic poles for imaging during head surgery. However, the applicability of the above two devices is limited. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a multifunctional nuclear magnetic resonance device, an accelerator radiotherapy equipment and an imaging method thereof, which provide doctors with more means for diagnosis or treatment.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows:

[0006] In one aspect, the present invention discloses a multifunctional nuclear magnetic resonance device, comprising:

[0007] A magnet, which is a hollow structure with an opening;

[0008] A magnet support frame, used for supporting the magnet only;

[0009] The magnet driving device is connected to the magnet in a transmission manner and is used to drive the magnet to rotate around its isocenter along its circumferential direction.

[0010] The invention discloses a multifunctional nuclear magnetic resonance device, which is suitable for the head and is a nuclear magnetic resonance imaging device rotating around a magnet isocenter. The device can be directly pushed to the side of a ward to diagnose patients and can also be used for surgical treatment, providing doctors with more means for diagnosis or treatment.

[0011] Based on the above technical solution, the following improvements can be made:

[0012] As a preferred solution, at least one set of magnet guide components for guiding the magnet to rotate is provided on the magnet support frame;

[0013] Each set of magnet guide components includes: two support plates and at least two parallel guide rollers arranged between the two support plates, and the rolling surfaces of the guide rollers are in rolling contact with the outer surface of the magnet;

[0014] The position distribution of the guide rollers is adapted to the outer surface contour of the magnet.

[0015] By adopting the above preferred solution, the magnet guide assembly is both a raceway for the rotation of the magnet and a structure for supporting the magnet.

[0016] As a preferred solution, at least one limit pin is respectively provided at both ends of the magnet along the axial direction, and the limit pin is used to limit the radial movement of the magnet;

[0017] One end of the limit pin is arranged on the magnet support frame, and the other end thereof extends into the limit groove on the magnet.

[0018] By adopting the above preferred solution, the limit pin can effectively limit the radial movement of the magnet, ensuring that the magnet can perform precise circumferential rotation.

[0019] As a preferred solution, at least one thrust roller is provided at each of the two ends of the magnet along the axial direction, and the thrust roller is used to limit the axial movement of the magnet;

[0020] The thrust roller body includes:

[0021] A retaining frame is mounted on the magnet support frame;

[0022] The roller is mounted on the retaining frame, and the rolling surface of the roller is in rolling contact with the end surface of the magnet.

[0023] By adopting the above preferred solution, the thrust roller body can effectively limit the axial movement of the magnet, ensuring that the magnet can perform precise circumferential rotation.

[0024] As a preferred solution, the magnet is a hollow cylinder, and a column, a first magnetic pole and a second magnetic pole are provided in the hollow area of ​​the magnet, and the first magnetic pole and the second magnetic pole are respectively provided at two ends of the column.

[0025] By adopting the above preferred solution, the magnet structure is simple and stable.

[0026] As a preferred solution, a notch is provided at the edge of the hollow area of ​​the magnet.

[0027] By adopting the above preferred solution, the gap at the edge of the magnet can provide space for the patient's shoulders to prevent interference.

[0028] As a preferred solution, the magnet driving device includes: a motor driving wheel, a tensioning wheel, a position feedback wheel and a synchronous belt;

[0029] The two ends of the synchronous belt are respectively fixed on the two circumferential sides of the magnet, tensioned by a tensioning wheel, and driven by a motor driving wheel. The position feedback wheel is connected to the synchronous belt transmission, and the position feedback wheel is used to feedback the position signal of the magnet.

[0030] By adopting the above preferred solution, the magnet can be stably driven to realize self-rotation.

[0031] As a preferred solution, it also includes:

[0032] The magnet moving device is arranged at the bottom of the magnet support frame and is used to drive the magnet to move.

[0033] The above preferred solution is adopted to facilitate the movement of the magnet.

[0034] On the other hand, the present invention also discloses an accelerator radiotherapy device, comprising any of the above-mentioned multifunctional nuclear magnetic resonance devices.

[0035] On the other hand, the present invention also discloses an imaging method of an accelerator radiotherapy device, which uses the accelerator radiotherapy device to perform imaging, and specifically includes the following contents:

[0036] The multifunctional nuclear magnetic resonance device is moved onto the revolving disk of the accelerator. The imaging area of ​​the multifunctional nuclear magnetic resonance device is located at the center of the accelerator. The opening position of the multifunctional nuclear magnetic resonance device moves along with the movement of the random frame.

[0037] The multifunctional nuclear magnetic resonance device disclosed in the present invention is suitable for imaging during head treatment by most existing accelerators without the need for additional modification of the machine room and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A schematic diagram of the structure of a functional nuclear magnetic resonance device provided in an embodiment of the present invention.

[0040] Figure 2 A schematic diagram of the structure of a magnet provided in an embodiment of the present invention.

[0041] Figure 3 A perspective view of a functional nuclear magnetic resonance device provided in an embodiment of the present invention.

[0042] Figure 4 for Figure 3 Section view along AA direction.

[0043] Figure 5 for Figure 4 Enlarged view of part B in the middle.

[0044] Figure 6 A schematic structural diagram of a thrust roller body provided in an embodiment of the present invention.

[0045] Figure 7 Another perspective view of the functional nuclear magnetic resonance device provided in an embodiment of the present invention.

[0046] Figure 8 for Figure 7 Sectional view along CC direction.

[0047] Fig. 9 This is one of the structural schematic diagrams of the accelerator radiotherapy equipment provided in an embodiment of the present invention.

[0048] Fig.10 The second structural schematic diagram of the accelerator radiotherapy equipment provided in an embodiment of the present invention.

[0049] Wherein: 1-magnet, 11-opening, 12-limiting groove, 13-column, 14-first magnetic pole, 15-second magnetic pole, 16-notch, 2-magnet support frame, 3-magnet drive device, 31-motor drive wheel, 32-tensioning wheel, 33-position feedback wheel, 34-synchronous belt, 4-magnet guide assembly, 41-support plate, 42-guide roller, 5-limiting pin, 6-thrust roller body, 61-retaining frame, 62-roller, 7-pressing block, 8-magnet moving device, 9-accelerator radiotherapy equipment, 91-accelerator, 92-frame. DETAILED DESCRIPTION

[0050] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Using ordinal numbers “first,” “second,” etc. to describe common objects merely indicates that different instances of similar objects are involved and is not intended to imply that the objects so described must have a given order in time, space, order, or in any other manner.

[0053] In addition, the expression of “comprising” an element is an “open” expression, which simply means that a corresponding component exists, and should not be interpreted as excluding additional components.

[0054] In order to achieve the purpose of the present invention, some embodiments of a multifunctional nuclear magnetic resonance device, a radiotherapy device and an accelerator-guided imaging method include: Figure 1-3 As shown, the multifunctional nuclear magnetic device includes:

[0055] The magnet 1 is a hollow structure with an opening 11;

[0056] A magnet support frame 2, used for supporting the magnet 1 only;

[0057] The magnet driving device 3 is drivingly connected to the magnet 1 and is used to drive the magnet 1 to rotate around its isocenter along its circumferential direction.

[0058] The present invention discloses a multifunctional nuclear magnetic resonance device, which is a nuclear magnetic resonance imaging device rotating around a magnet 1 isocenter, which can be directly pushed to the side of a ward to diagnose patients, and can also be used for surgical treatment, providing doctors with more means for diagnosis or treatment.

[0059] The present invention configures the magnet into a self-rotating structure, thereby transforming it from a simple imaging device into a nuclear magnetic resonance device with multiple operating spaces, thereby greatly expanding its applicability.

[0060] In some embodiments, limit switches are provided at both ends of the magnet 1 to limit the rotation range of the magnet 1 , and mechanical limits are also provided to ensure the safety of the equipment.

[0061] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that at least one set of magnet guide components 4 for self-rotation guidance of the magnet 1 is provided on the magnet support frame 2;

[0062] Each set of magnet guide components 4 includes: two support plates 41 and at least two parallel guide rollers 42 arranged between the two support plates 41, and the rolling surface of the guide roller 42 is in rolling contact with the outer surface of the magnet 1;

[0063] The position distribution of the guide rollers 42 is adapted to the outer surface contour of the magnet 1 .

[0064] By adopting the above preferred solution, the magnet guide assembly 4 is both a raceway for the magnet 1 to rotate and a structure for supporting the magnet 1. The magnet guide assembly 4 forms a structure similar to a rolling bearing.

[0065] In a specific embodiment, Figure 1 As shown, two groups of magnet guide components 4 for guiding the magnets to rotate are arranged on the magnet support frame 2 .

[0066] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that along the axial direction of the magnet 1 (such as Figure 1 At least one limit pin 5 is provided at each end of the magnet 1 in the y direction (as shown), and the limit pin 5 is used to limit the radial movement of the magnet 1;

[0067] One end of the limiting pin 5 is arranged on the magnet support frame 2 , and the other end thereof extends into the limiting groove 12 on the magnet 1 .

[0068] By adopting the above preferred solution, the limit pin 5 can effectively limit the radial direction of the magnet 1 (such as Figure 1 The magnet 1 is moved in the z direction as shown in the figure to ensure that the magnet 1 can perform accurate circumferential rotation. The limiting pin 5 extends into the limiting groove 12 on the magnet 1 to limit the magnet 1 in the inner radial position.

[0069] It is worth noting that Figure 4 and 5 As shown, the limit pin 5 is disposed on the two outermost support plates 41 of the magnet 1. The above is only one embodiment, and the limit pin 5 can also be disposed on the magnet support frame 2, which is not limited here.

[0070] At the same time, the number of the limiting pins 5 is also adjusted according to the specific situation and is not limited.

[0071] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that at least one thrust roller body 6 is provided at both ends of the magnet 1 along the axial direction, and the thrust roller body 6 is used to limit the axial movement of the magnet 1;

[0072] The thrust roller body 6 comprises:

[0073] A retaining frame 61 is mounted on the magnet support frame 2;

[0074] The roller 62 is mounted on the retaining frame 61 , and the rolling surface of the roller 62 is in rolling contact with the end surface of the magnet 1 .

[0075] By adopting the above preferred solution, the thrust roller body 6 can effectively limit the axial movement of the magnet 1, ensuring that the magnet 1 can perform precise circumferential rotation.

[0076] It is worth noting that Figure 4-6 As shown, the thrust roller body 6 is installed on the two outermost support plates 41 of the magnet 1 and installed below the stop pin 5. The above is only one embodiment, and the thrust roller body 6 can also be set on the magnet support frame 2, which is not limited here.

[0077] Meanwhile, the number of thrust roller bodies 6 is also adjusted according to the specific situation without any restriction.

[0078] In order to further optimize the implementation effect of the present invention, in some other embodiments, the other characteristic technologies are the same, the difference is that the magnet 1 is a hollow cylinder, and a column 13, a first magnetic pole 14 and a second magnetic pole 15 are provided in the hollow area of ​​the magnet 1, and the first magnetic pole 14 and the second magnetic pole 15 are respectively arranged at both ends of the column 13.

[0079] By adopting the above preferred solution, the magnet 1 has a simple structure and is stable. The magnet 1 can rotate ±90 degrees around the center of its own cylinder, and the rotation of the magnet 1 provides other possibilities for its application.

[0080] like Figure 2 As shown, two columns 13 are provided in the hollow area of ​​the magnet 1, and the number of the columns 13 is not limited.

[0081] Furthermore, a notch 16 is provided at the edge of the hollow area of ​​the magnet 1 .

[0082] By adopting the above preferred solution, the notch 16 at the edge of the magnet 1 can provide a shoulder space for the patient to use, thereby preventing interference.

[0083] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that the magnet driving device 3 includes: a motor driving wheel 31, a tensioning wheel 32, a position feedback wheel 33 and a synchronous belt 34;

[0084] The two ends of the synchronous belt 34 are respectively fixed on the two circumferential sides of the magnet, tensioned by the tensioning wheel 32, and driven by the motor driving wheel 31. The position feedback wheel 33 is transmission-connected to the synchronous belt 34, and the position feedback wheel 33 is used to feedback the position signal of the magnet 1.

[0085] By adopting the above preferred solution, the magnet 1 can be stably driven to realize self-rotation.

[0086] like Figure 7-8 As shown, the transmission is realized by driving the synchronous belt 34 by the motor, and the two ends of the synchronous belt 34 are respectively fixed at the opening 11 of the magnet 1 by the pressing block 7, and its detour path is from the magnet opening position to a tensioning wheel 32 to the position feedback wheel 33 to another tensioning wheel 32 to the other end of the magnet opening 11. The motor driving wheel 31 determines the position feedback wheel 33 to realize the rotation of the magnet 1 around the isocenter. The position feedback wheel 33 itself is connected to an encoder or a potentiometer to feedback the position signal.

[0087] However, it is worth noting that the magnet driving device 3 can not only be the synchronous belt 34 wheel disclosed in the above embodiment, but can also be driven by gears, sprockets, etc., which is not limited here.

[0088] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that the multifunctional nuclear magnetic resonance device further includes:

[0089] The magnet moving device 8 is arranged at the bottom of the magnet support frame 2 and is used to drive the magnet to move.

[0090] The above preferred solution is adopted to facilitate the movement of the magnet. The magnet support frame 2 is not only a support platform for the magnet, but also a driving platform for the magnet and a transportation platform for the magnet.

[0091] It is worth noting that the magnet moving device 8 can be an intelligent guided transport trolley or a plurality of casters.

[0092] The intelligent guided transport trolley consists of a set of steering wheels and a set of driving wheels, which are driven by a motor to achieve the movement of the nuclear magnetic field.

[0093] like Figure 9-10 As shown, an embodiment of the present invention further discloses an accelerator radiotherapy device 9, including the multifunctional nuclear magnetic resonance device disclosed in any of the above embodiments.

[0094] On the other hand, the embodiment of the present invention further discloses an imaging method of the accelerator radiotherapy device 9, which uses the accelerator radiotherapy device 9 to perform imaging, and specifically includes the following contents:

[0095] The multifunctional nuclear magnetic resonance device is moved onto the revolving disk of the accelerator. The imaging area of ​​the multifunctional nuclear magnetic resonance device is located at the center of the accelerator 91 , and the opening 11 of the multifunctional nuclear magnetic resonance device moves along with the movement of the random frame 92 .

[0096] By directly fixing the nuclear magnetic resonance device on the orbiting disk of the accelerator, a dual isocenter synchronized accelerator-guided treatment can be achieved.

[0097] The multifunctional nuclear magnetic resonance device disclosed in the present invention is suitable for imaging during head treatment by most existing accelerators without the need for additional modification of the machine room and the like.

[0098] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable ordinary technicians in the field to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional nuclear magnetic resonance device, characterized in that: include: A magnet, wherein the magnet is a hollow structure with an opening; A magnet support frame, used to support the magnet only; A magnet driving device, the magnet driving device is drivingly connected to the magnet, and is used to drive the magnet to rotate around its isocenter along its circumference; at least one group of magnet guide components for guiding the magnet to rotate is provided on the magnet support frame; Each group of the magnet guide assembly comprises: two support plates and at least two parallel guide rollers arranged between the two support plates, wherein the rolling surfaces of the guide rollers are in rolling contact with the outer surface of the magnet; The position distribution of the guide rollers is adapted to the outer surface profile of the magnet; At least one limit pin is respectively provided at both ends of the magnet along the axial direction, and the limit pin is used to limit the radial movement of the magnet; One end of the limit pin is arranged on the magnet support frame, and the other end thereof extends into the limit slot on the magnet; At least one thrust roller is provided at each of the two ends of the magnet along the axial direction, and the thrust roller is used to limit the axial movement of the magnet; The thrust roller body includes: A retaining frame, mounted on the magnet support frame; The roller is mounted on the retaining frame, and the rolling surface of the roller is in rolling contact with the end surface of the magnet.

2. The multifunctional nuclear magnetic device according to claim 1, characterized in that: The magnet is a hollow cylinder, and a column, a first magnetic pole and a second magnetic pole are arranged in the hollow area of ​​the magnet. The first magnetic pole and the second magnetic pole are respectively arranged at two ends of the column.

3. The multifunctional nuclear magnetic resonance device according to claim 2, characterized in that: A notch is arranged at the edge of the hollow area of ​​the magnet.

4. The multifunctional nuclear magnetic resonance device according to claim 1, characterized in that: The magnet driving device comprises: a motor driving wheel, a tensioning wheel, a position feedback wheel and a synchronous belt; The two ends of the synchronous belt are respectively fixed on the two circumferential sides of the magnet, are tensioned by the tensioning wheel, and are driven by the motor driving wheel. The position feedback wheel is connected to the synchronous belt transmission, and the position feedback wheel is used to feedback the position signal of the magnet.

5. The multifunctional nuclear magnetic resonance device according to claim 1, characterized in that: Also includes: The magnet moving device is arranged at the bottom of the magnet support frame and is used for driving the magnet to move.

6. Accelerator radiotherapy equipment, characterized in that Comprising the multifunctional nuclear magnetic resonance device as described in any one of claims 1 to 5.

7. An imaging method for an accelerator radiotherapy device, characterized in that: Imaging is performed using the accelerator radiotherapy device as claimed in claim 6, specifically Includes the following: The multifunctional nuclear magnetic device is moved onto the revolving disk of the accelerator, wherein the imaging area of ​​the multifunctional nuclear magnetic device is located at the center of the accelerator, and the opening position of the multifunctional nuclear magnetic device moves along with the movement of the random frame.

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