Translational and rotatable examination table system and method for radiation therapy and medical imaging

Abstract

The present invention discloses a translationally movable and rotatable examination bed system and method for radiotherapy and medical imaging. The present invention includes a translation guide rail, a rotation device, a lifting device, an examination bed, an imaging registration mark and a workstation; the present invention can avoid the patient's displacement / position change during the conversion of anti- / radiotherapy and medical imaging equipment, which brings convenience to the patient on the one hand, and can make the position arrangement of different equipment more convenient on the other hand, thereby improving the equipment utilization rate; the present invention realizes the precise fusion of image information of multiple different medical diagnosis and treatment equipment, and achieves the fusion accuracy of the same machine; by calibrating the scale on the examination bed, the strict matching of the treatment area of ​​the radiotherapy equipment and the imaging area of ​​the imaging equipment is achieved; the present invention can perform translational movement, which is convenient for the arrangement of different equipment and prevents mutual interference; and can rotate and be applied to different equipment; after the multi-layer bed board mechanism is fully retracted, the length is the shortest, which is convenient for translation and rotational movement in a small space.

Description

Technical Field

[0001] The invention relates to the field of medical imaging and treatment, and in particular to a translationally movable and rotatable examination bed system which can be generally used for radiotherapy and medical imaging, and a control method thereof. Background Art

[0002] When patients use large-scale radiotherapy equipment, such as proton therapy equipment, heavy ion therapy equipment, and gamma knife, they need to use medical imaging equipment, such as positron emission tomography (PET) or computed tomography (CT), as well as the imaging system of the radiotherapy equipment itself, to accurately locate the treatment site before and after radiotherapy in order to plan and detect the treatment effect. This process requires patients to undergo continuous treatment and examination on different equipment. Under the current equipment conditions, different examination beds need to be used, and the patient's position will also change, which will cause the problem of difficulty in matching and fusing images from different equipment, which is not conducive to the evaluation of radiotherapy plans and effectiveness. At the same time, the patient himself may have difficulty in moving, have fixed medical devices (such as infusion stands), or require a short time interval between treatment and examination before and after. Replacing the examination bed will bring more inconvenience and danger, so that the expected effect cannot be achieved. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention proposes a translationally rotatable examination bed system for radiotherapy and medical imaging and a control method thereof. The translationally rotatable examination bed for radiotherapy and medical imaging allows multiple devices to share one examination bed, which is convenient for using different devices for continuous examination or treatment, and can achieve high-precision registration and fusion of images from different devices, thereby helping to improve treatment efficiency and accuracy.

[0004] An object of the present invention is to provide a translationally rotatable examination table system for both radiotherapy and medical imaging.

[0005] The present invention discloses a translatable and rotatable examination bed system for radiotherapy and medical imaging, comprising: a translation guide rail, a rotation device, a lifting device, an examination bed, an imaging registration mark and a workstation; wherein the translation guide rail is arranged on the ground between the radiotherapy equipment and the medical imaging equipment; the rotation device is arranged on the translation guide rail and can move horizontally along the translation guide rail; the lifting device is arranged on the rotation device, the rotation device can drive the lifting device to rotate in the vertical direction, and the lifting device can perform lifting movement in the vertical direction; a horizontal examination bed is arranged at the top of the lifting device; the rotation device, the lifting device and the examination bed are arranged on the ground between the radiotherapy equipment and the medical imaging equipment ... They are connected to the workstation through their own motors and drivers respectively; the examination bed includes a multi-layer bed board mechanism, an anti-slip guide rail and a transmission device, the multi-layer bed board mechanism is stacked up and down, and an anti-slip guide rail and a transmission device are arranged between two adjacent layers of bed board mechanisms. In the length direction, the upper bed board mechanism can translate along the surface of the lower bed board mechanism; an imaging registration mark is arranged on the uppermost bed board mechanism; the bed board mechanisms of each layer of the examination bed are aligned and stacked up and down, at this time the length of the examination bed is the shortest, and the sample to be inspected is located on the examination bed; the workstation controls the rotating device to move along the translation guide rail to the front of the radiotherapy equipment or the medical imaging equipment, and controls the rotation The rotating device makes the examination bed parallel to the axis of the radiotherapy equipment or the medical imaging equipment, and controls the lifting device to adjust the height of the examination bed so that the examination bed is located on the axis of the radiotherapy equipment or the medical imaging equipment; the multi-layer bed board mechanism is controlled to extend from top to bottom in sequence until it is located in the radiotherapy equipment or the medical imaging equipment, collects images and transmits them to the workstation and saves them, and after the treatment or imaging is completed, the bed board mechanisms of each layer are retracted in sequence, the height of the examination bed is lowered by the lifting device, and it is moved along the translation guide rail to the next medical imaging equipment or radiotherapy equipment; the rotating device is controlled to make the examination bed parallel to the axis of the medical imaging equipment or the radiotherapy equipment, and controls the lifting device to adjust the height of the examination bed so that the examination bed is located on the axis of the medical imaging equipment or the radiotherapy equipment; the multi-layer bed board mechanism is controlled to extend from top to bottom in sequence until it is located in the medical imaging equipment or the radiotherapy equipment, collects images and transmits them to the workstation and saves them; during the transportation process, the sample to be inspected is located on the examination bed and remains motionless, and the sample to be inspected is transported in a state-preserving manner; according to the imaging registration mark located on the examination bed in the collected image, the image in the radiotherapy equipment and the medical imaging equipment is registered to achieve image registration and fusion of different devices.

[0006] Radiotherapy equipment is an external radiation therapy machine, an internal radiation therapy machine or a stereotactic radiotherapy device. Medical imaging equipment is a positron emission tomography (PET), a computerized tomography (CT) or an imaging system that comes with the radiotherapy equipment.

[0007] An anti-slip guide rail is installed between two adjacent bed board mechanisms, so that the upper extended bed can translate along the surface of the lower extended bed without overturning.

[0008] The transmission device includes but is not limited to: a motor and a screw; the output shaft of the motor is connected to the screw through a coupling; the base of the screw is installed on the upper surface of the lower bed board mechanism, and the nut of the screw is fixed on the lower surface of the upper bed board mechanism. The motor drives the screw to rotate, so that the upper bed board mechanism can be extended or contracted along the surface of the lower bed board mechanism.

[0009] The imaging registration mark adopts a scale and / or an imaging marker. Corresponding imaging markers are adopted for different imaging modalities.

[0010] Examination bed motion control: The movement state of the examination bed is controlled by the workstation, and through the open examination bed control software interface, the examination bed control can be shared with various radiotherapy and imaging equipment, making it convenient to control the movement of the examination bed on different devices.

[0011] Another object of the present invention is to provide a control method for a translationally rotatable examination table system used for both radiotherapy and medical imaging.

[0012] The control method of the translationally rotatable examination bed system for radiotherapy and medical imaging of the present invention comprises the following steps:

[0013] 1) The bed boards of the inspection bed are stacked up and down in an aligned manner. At this time, the length of the inspection bed is the shortest and the sample to be inspected is located on the inspection bed;

[0014] 2) The workstation controls the rotating device to move along the translation guide to the front of the radiotherapy equipment or medical imaging equipment;

[0015] 3) The workstation controls the rotation of the rotating device to make the examination bed parallel to the axis of the radiotherapy equipment or medical imaging equipment;

[0016] 4) Controlling the lifting device to adjust the height of the examination bed so that the examination bed is located on the axis of the radiotherapy equipment or medical imaging equipment;

[0017] 5) The workstation controls the multi-layer bed board mechanism to extend from top to bottom in sequence until it is located in the radiotherapy equipment or medical imaging, collects images and transmits them to the workstation for storage;

[0018] 6) After completing treatment or imaging, retract the bed board mechanisms of each layer in turn, and lower the height of the examination bed through the lifting device;

[0019] 7) The workstation controls the rotating device to move the next medical imaging device or radiotherapy device along the translation rail;

[0020] 8) The workstation controls the rotation of the rotating device to make the examination bed parallel to the axis of the medical imaging device or radiotherapy device;

[0021] 9) Control the lifting device to adjust the height of the examination bed so that the examination bed is located on the axis of the medical imaging device or radiotherapy device;

[0022] 10) Control the multi-layer bed board mechanism to extend from top to bottom in sequence until it is located in the medical imaging device or radiotherapy device,

[0023] During the transportation process, the sample to be inspected remains stationary on the inspection bed, and the sample to be inspected is transported in a state-preserving manner. Images are collected and transmitted to the workstation and saved.

[0024] 11) Based on the imaging registration marks located on the examination bed in the acquired images, the images in the radiotherapy equipment and the medical imaging equipment are registered to achieve image registration and fusion of different devices, as well as information preservation and transmission.

[0025] Advantages of the present invention:

[0026] The present invention can avoid the patient's displacement / position change during the conversion of anti / radiotherapy and medical imaging equipment, which brings convenience to the patient on the one hand, and can make the position arrangement of different equipment more convenient on the other hand, thereby improving the equipment utilization rate; the present invention realizes the precise fusion of image information of multiple different medical diagnosis and treatment equipment, and achieves the fusion accuracy of the same machine; at present, the images required for radiotherapy equipment are all provided by other imaging equipment, which belongs to heterogeneous machine information and is difficult to complete precise matching and fusion. By calibrating the scale on the examination bed, the treatment area of ​​the radiotherapy equipment and the imaging area of ​​the imaging equipment are strictly matched, and the high-precision fusion of image information of different equipment is realized, so as to achieve the purpose of scanning on the same machine; the present invention can perform translational movement, which is convenient for the arrangement of different equipment and prevents mutual interference; and it can rotate and be applied to different equipment; after the multi-layer bed board mechanism is fully retracted, the length is the shortest, which is convenient for translation and rotational movement in a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the present invention showing the translationally rotatable examination bed system used for both radiotherapy and medical imaging being docked with a radiotherapy device;

[0028] Figure 2 It is a schematic diagram of the docking of the translatable and rotatable examination bed system for radiotherapy and medical imaging of the present invention with medical imaging;

[0029] Figure 3 It is a schematic diagram of a translationally rotatable examination table system for simultaneous radiotherapy and medical imaging of the present invention;

[0030] Figure 4 Schematic diagrams of various angles of the translatable and rotatable examination bed system for radiotherapy and medical imaging of the present invention,

[0031] Among them, (a) is the rear view, (b) is the front view, and (c) is the top view. DETAILED DESCRIPTION

[0032] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0033] like Figure 3 and 4 As shown, the translatable and rotatable examination bed system for radiotherapy and medical imaging of this embodiment comprises: a translation rail 9, a rotating device 8, a lifting device 7, an examination bed 1, an imaging registration mark and a workstation 10; wherein the translation rail 9 is arranged on the ground between the radiotherapy equipment and the medical imaging equipment; the rotating device 8 is arranged on the translation rail 9 and can move along the translation rail 9; the lifting device 7 is arranged on the rotating device 8 and can perform lifting movement in the vertical direction; a horizontal examination bed 1 is arranged on the top of the lifting device 7; The device 8, the lifting device 7 and the inspection bed 1 are connected to the workstation 10 through their own motors and drivers respectively; the inspection bed 1 includes three-layer bed board mechanisms 4-6, anti-slip guide rails and a transmission device, the multiple bed board mechanisms are stacked up and down, and the anti-slip guide rails and the transmission device are arranged between two adjacent bed board mechanisms. In the length direction, the upper bed board mechanism can translate along the surface of the lower bed board mechanism; an imaging alignment mark is arranged on the uppermost bed board mechanism; the bed board mechanisms of each layer of the inspection bed 1 are aligned and stacked up and down, at this time, the length of the inspection bed 1 is the shortest, and the sample to be inspected is located on the inspection bed 1.

[0034] The transmission device includes: a motor and a screw; the output shaft of the motor is connected to the screw through a coupling; the base of the screw is installed on the upper surface of the lower bed board mechanism, and the nut of the screw is fixed on the lower surface of the upper bed board mechanism. The motor drives the screw to rotate, so that the upper bed board mechanism can be extended or contracted along the surface of the lower bed board mechanism.

[0035] Imaging registration marks use scales and imaging markers.

[0036] The control method of the translationally rotatable examination bed system used for radiotherapy and medical imaging in this embodiment comprises the following steps:

[0037] 1) The bed boards of the inspection bed 1 are stacked up and down in an aligned manner. At this time, the length of the inspection bed 1 is the shortest, and the sample to be inspected is located on the inspection bed 1;

[0038] 2) The workstation 10 controls the rotating device 8 to move along the translation guide rail 9 to the front of the radiotherapy device 2, such as Figure 1 As shown;

[0039] 3) The workstation 10 controls the rotation device 8 to rotate so that the examination bed 1 is parallel to the axis of the radiotherapy equipment;

[0040] 4) Controlling the lifting device 7 to adjust the height of the examination bed 1 so that the examination bed 1 is located on the axis of the radiotherapy equipment;

[0041] 5) The workstation 10 controls the bed plates of the multi-layer bed plate mechanism to extend from top to bottom in sequence until they are located in the radiotherapy device, and collects images and transmits them to the workstation 10 and saves them;

[0042] 6) After the treatment is completed, the bed board mechanisms of each layer are retracted in turn, and the height of the examination bed 1 is lowered by the lifting device 7;

[0043] 7) The workstation 10 controls the rotating device 8 to move along the translation guide rail 9 to the medical imaging device 3, such as Figure 2 As shown;

[0044] 8) The workstation 10 controls the rotation device 8 to rotate so that the examination bed 1 is parallel to the axis of the medical imaging device;

[0045] 9) Controlling the lifting device 7 to adjust the height of the examination bed 1 so that the examination bed 1 is located on the axis of the medical imaging device;

[0046] 10) Control the multi-layer bed plate mechanism to extend from top to bottom in sequence until it is located in the medical imaging device, the sample to be inspected is located on the inspection bed 1 and remains motionless, the sample to be inspected is transported in a state-preserving manner, and images are collected and transmitted to the workstation 10 and stored;

[0047] 11) According to the imaging registration mark located on the examination bed 1 in the acquired image, the image in the radiotherapy device is registered with the image in the medical imaging device to achieve image registration and fusion of different devices.

[0048] Finally, it should be noted that the purpose of publishing the embodiments is to help further understand the present invention, but those skilled in the art can understand that various substitutions and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the present invention should not be limited to the contents disclosed in the embodiments, and the scope of protection claimed by the present invention shall be subject to the scope defined in the claims.

Claims

1. A translatable and rotatable examination bed system for both radiotherapy and medical imaging, characterized in that: The translationally movable and rotatable examination bed system comprises: a translation guide rail, a rotation device, a lifting device, an examination bed, an imaging registration mark and a workstation; wherein the translation guide rail is arranged on the ground between the radiotherapy equipment and the medical imaging equipment; the rotation device is arranged on the translation guide rail and can move horizontally along the translation guide rail; a lifting device is arranged on the rotation device, and the rotation device can drive the lifting device to rotate in the vertical direction, and the lifting device can perform lifting movement in the vertical direction; a horizontal examination bed is arranged on the top of the lifting device; the rotation device, the lifting device and the examination bed are respectively connected by respective electric The machine and the driver are connected to the workstation; the examination bed includes a multi-layer bed board mechanism, an anti-slip guide rail and a transmission device, the multi-layer bed board mechanism is stacked up and down, and an anti-slip guide rail and a transmission device are arranged between two adjacent layers of bed board mechanisms. In the length direction, the upper bed board mechanism can translate along the surface of the lower bed board mechanism; an imaging registration mark is arranged on the uppermost bed board mechanism; the bed board mechanisms of each layer of the examination bed are aligned and stacked up and down, at this time the length of the examination bed is the shortest, and the sample to be inspected is located on the examination bed; the workstation controls the rotating device to move along the translation guide rail to the front of the radiotherapy equipment or the medical imaging equipment, and controls the rotating device to The examination bed is parallel to the axis of the radiotherapy equipment or the medical imaging equipment, and the lifting device is controlled to adjust the height of the examination bed so that the examination bed is located on the axis of the radiotherapy equipment or the medical imaging equipment; the multi-layer bed board mechanism is controlled to extend from top to bottom in sequence until it is located in the radiotherapy equipment or the medical imaging equipment, and the image is collected and transmitted to the workstation and saved. After the treatment or imaging is completed, the bed board mechanisms of each layer are retracted in sequence, the height of the examination bed is lowered by the lifting device, and it is moved along the translation guide rail to the next medical imaging equipment or radiotherapy equipment; the rotating device is controlled to make the examination bed parallel to the axis of the medical imaging equipment or the radiotherapy equipment, and the lifting device is controlled to adjust the height of the examination bed so that the examination bed is located on the axis of the medical imaging equipment or the radiotherapy equipment; the multi-layer bed board mechanism is controlled to extend from top to bottom in sequence until it is located in the medical imaging equipment or the radiotherapy equipment, and the image is collected and transmitted to the workstation and saved; during the transportation process, the sample to be inspected is located on the examination bed and remains motionless, and the sample to be inspected is transported in a state-preserving manner; according to the imaging registration mark located on the examination bed in the collected image, the image in the radiotherapy equipment and the medical imaging equipment are registered to achieve image registration and fusion of different equipment.

2. The translationally movable and rotatable examination bed system according to claim 1, characterized in that: The imaging registration mark may be a scale and / or an imaging marker.

3. A control method for a translationally rotatable examination bed system for both radiotherapy and medical imaging as claimed in claim 1, characterized in that: The control method comprises the following steps: 1) The bed boards of the inspection bed are stacked up and down in an aligned manner. At this time, the length of the inspection bed is the shortest and the sample to be inspected is located on the inspection bed; 2) The workstation controls the rotating device to move along the translation guide to the front of the radiotherapy equipment or medical imaging equipment; 3) The workstation controls the rotation of the rotating device to make the examination bed parallel to the axis of the radiotherapy equipment or medical imaging equipment; 4) Controlling the lifting device to adjust the height of the examination bed so that the examination bed is located on the axis of the radiotherapy equipment or medical imaging equipment; 5) The workstation controls the multi-layer bed board mechanism to extend from top to bottom in sequence until it is located in the radiotherapy equipment or medical imaging, collects images and transmits them to the workstation for storage; 6) After completing treatment or imaging, retract the bed board mechanisms of each layer in turn, and lower the height of the examination bed through the lifting device; 7) The workstation controls the rotating device to move the next medical imaging device or radiotherapy device along the translation rail; 8) The workstation controls the rotation of the rotating device to make the examination bed parallel to the axis of the medical imaging device or radiotherapy device; 9) Control the lifting device to adjust the height of the examination bed so that the examination bed is located on the axis of the medical imaging device or radiotherapy device; 10) Control the multi-layer bed board mechanism to extend from top to bottom in sequence until it is located in the medical imaging device or radiotherapy device. During the transportation process, the sample to be inspected is kept stationary on the inspection bed, and the sample to be inspected is transported in a state-preserving manner. The image is collected and transmitted to the workstation for storage; 11) Based on the imaging registration marks located on the examination bed in the acquired images, the images in the radiotherapy equipment and the medical imaging equipment are registered to achieve image registration and fusion of different devices, as well as information preservation and transmission.

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