A markerless radiotherapy fast positioning and repositioning device

Abstract

The utility model provides a kind of markerless radiotherapy fast positioning reset device, to improve positioning accuracy and efficiency in radiotherapy, simplify operation process.The device includes bed body, and the surface of bed body is equipped with multiple semicircular holes and circular opening, and the both sides of bed body are equipped with scale mark line, for positioning and confirming bed body coordinate system position.Bed body inside is equipped with multiple mark lines, and at least one mark line is at certain angle, can be in image equipment image, help doctor fast image guide registration, accurately position patient.Bed body rear end is equipped with the adaptation device directly connected with accelerator bed body, reduce the redundant bed board level, optimize treatment space, reduce the absorption of radiation dose, improve tumor irradiation dose.The utility model can reduce the use of external marker, improve treatment efficiency, reduce operation difficulty, reduce error, and can be customized according to existing equipment of hospital, with higher clinical application value.

Description

Technical Field

[0001] This utility model relates to a markerless radiotherapy rapid positioning and repositioning device, and more particularly to a radiotherapy positioning and repositioning device. Background Technology

[0002] Currently, the method for localization and repositioning in radiotherapy involves placing a custom-made localization bed on the existing accelerator or CT scanner bed. The patient is positioned on the bed and secured with adapter strips. This process is cumbersome, increases the bed thickness, and raises the absorbed dose, potentially leading to insufficient radiation dose to the tumor tissue. It also reduces treatment space and increases the risk of collisions. During localization, surface markers are used to mark the patient's body. During repositioning, the markers are first used to confirm the tumor location before being removed and placed on the tumor site. This procedure requires two or more staff members and involves considerable technical skill, thus consuming a significant amount of time and being prone to errors. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this invention is to provide a markerless radiotherapy rapid positioning and repositioning device, which solves the problems of high requirements, slow speed, and low accuracy in existing positioning and repositioning technologies.

[0004] A markerless radiotherapy rapid positioning and repositioning device includes a bed with a semi-circular hole; a circular opening on the surface of the bed; graduated marking lines on both sides of the bed; a mold fixing adapter for fixing the patient on the bed; marking lines inside the bed; the marking lines inside the bed have two or more marking lines, and at least one of them is at a certain angle, which can be displayed on the imaging equipment image; and an adapter for adapting to an accelerator bed is located at the rear end of the bed.

[0005] Furthermore, the semi-circular holes are symmetrically distributed on both sides of the bed, and multiple sets are evenly spaced.

[0006] Furthermore, the circular openings on the surface of the bed are for fixing verification molds and other accessories, and their number and location are determined according to the molds used by the hospital.

[0007] Furthermore, the scale markings are symmetrically distributed on both sides of the bed.

[0008] Furthermore, the mold fixing adapter for fixing the patient on the bed is a customized device, customized according to the mold used by the hospital.

[0009] Furthermore, the adapter at the rear end of the bed is a customized device, adapted to fit the hospital accelerator bed.

[0010] This invention combines an accelerator bed with a positioning bed, effectively increasing treatment space and reducing dose absorption by the bed board, thereby increasing the irradiation dose to the tumor and reducing operational difficulty. It can be customized according to existing hospital templates, reducing departmental expenses. The addition of a template adapter component to the bed board reduces the workload for physicists and improves work efficiency. The side marking lines and internal marking lines are in the same coordinate system, facilitating tumor location confirmation by doctors without the need for external markings, improving treatment efficiency, reducing operational difficulty, and minimizing errors. The internal marking lines facilitate image-guided registration, allowing for rapid registration and confirmation of patient positioning errors. The adapter component for the accelerator bed can be customized according to existing hospital beds, shortening replacement cycles and not affecting treatment. Attached Figure Description

[0011] Figure 1 is a front structural view of a specific embodiment of the present invention.

[0012] Figure 2 is a schematic diagram of the internal structure of a specific embodiment of the present invention.

[0013] Figure 3 is a side view of a specific embodiment of the present invention.

[0014] Figure 4 is a schematic diagram of the center of the bed board scanned by the imaging device in a specific embodiment of this utility model.

[0015] Figure 5 is a schematic diagram of an arbitrary random position of a bed board scanned by an imaging device according to a specific embodiment of this utility model. Detailed Implementation

[0016] The technical solution of this utility model will be further explained below with reference to specific embodiments.

[0017] like Figure 1 , Figure 2 as well as Figure 3 As shown, a markerless radiotherapy rapid positioning and repositioning device includes a bed with semi-circular holes; graduated marking lines on both sides of the bed; a patient fixation adapter on the bed; marking lines inside the bed; and an adapter for an accelerator bed at the rear end of the bed. The semi-circular holes are symmetrically distributed on both sides of the bed, with multiple groups evenly spaced. Circular openings on the bed surface are for fixing verification molds and other accessories; their number and position are determined based on the molds used in the hospital. The graduated marking lines are symmetrically distributed on both sides of the bed. The patient fixation adapter on the bed is a customized device, tailored to the molds used in the hospital.

[0018] The bed has internal marking lines, with two or more lines, at least one of which forms a certain angle, and these lines are visible on the imaging equipment. The adapter at the rear of the bed is a customized device, adapted to fit the hospital's accelerator bed.

[0019] In summary, the functional principle of this utility model is:

[0020] like Figure 1 As shown, it combines the accelerator bed board with the positioning bed board, which can directly fix the patient's position. The fixation is achieved through the adapter component 11 of the pre-reserved fixing mold on the bed board, which is customized according to the hospital's existing mold.

[0021] The bed body 31 has semi-circular holes 12 on the left and right sides, which are adapter components. An adapter strip and accessories can be added to the bed board. The circular openings 14 of the bed body can be used to fix the adapter components or the mold body.

[0022] The bed 31 has marked scale lines 13 on both sides, which are used to indicate the position of the bed coordinate system and for quality control. The operator can confirm the angle between the bed and the accelerator scanning plane through the two sides.

[0023] The surface of the bed body 31 has circular openings 14, which are for fixing verification molds, molds and other accessories. The number and location are determined according to the molds and accessories used by the hospital.

[0024] The bed body 31 has two or more marking lines 21 inside, and at least one of them is at a certain angle, which can be displayed on the image of the imaging device.

[0025] The design of the accelerator bed adapter 32, which is directly connected to the accelerator treatment bed, effectively combines the positioning bed 31 with the accelerator treatment bed through a customized adapter, avoiding the use of an additional bed board.

[0026] Figure 4 It is a cross-sectional schematic diagram of the bed after scanning by the imaging equipment. The scanning range of the imaging equipment is 1, the bed is 31, and the internal marking line of the bed is 21. It is an image of the overlapping position of the marking line, through which the origin of the coordinates can be determined.

[0027] Figure 5 It is a cross-sectional schematic diagram of the bed after scanning by imaging equipment. The marking line 21 inside the bed is an image at any position. The location of the tumor can be determined by the angle and distance of the line.

[0028] The advantages of this invention lie in combining the accelerator bed with the positioning bed, effectively increasing the treatment space and reducing the absorption of the dose by the bed board, thereby increasing the irradiation dose to the tumor and reducing the difficulty of operation. It can be customized according to the hospital's existing molds, reducing departmental expenses. The addition of a mold-fitting component to the bed board reduces the workload for physicists and improves work efficiency. The side marking lines and internal marking lines are in the same coordinate system, facilitating the doctor's confirmation of the tumor location without the need for external markings, improving treatment efficiency, reducing operational difficulty, and minimizing errors. The internal marking lines facilitate image-guided registration, allowing for rapid registration and confirmation of patient positioning errors. The accelerator bed adapter component can be customized according to the hospital's existing bed, shortening the replacement cycle and not affecting treatment.

Claims

1. A markerless radiotherapy fast positioning and repositioning device comprising a bed body, characterized in that: The bed has a semi-circular hole; the surface of the bed has a circular opening; there are scale marking lines on both sides of the bed; the bed has a mold fixing adapter for fixing the patient; there are marking lines inside the bed; there are two or more marking lines inside the bed, and at least one of them is at a certain angle, which can be displayed on the imaging equipment image; the rear end of the bed has an adapter for the accelerator bed.

2. A markerless radiotherapy fast positioning and repositioning device as claimed in claim 1, characterized in that: The semi-circular holes are symmetrically distributed on both sides of the bed, and multiple sets are evenly spaced.

3. A markerless radiotherapy fast positioning and repositioning device as claimed in claim 1, characterized in that: The circular openings on the surface of the bed are for fixing the verification mold accessories, and their number and location are determined according to the mold used by the hospital.

4. A markerless radiotherapy fast positioning and repositioning device as claimed in claim 1, characterized in that: The scale markings are symmetrically distributed on both sides of the bed.

5. A markerless radiotherapy fast positioning and repositioning device as claimed in claim 1, characterized in that: The mold fixing adapter for securing the patient on the bed is a customized device, made according to the mold used by the hospital.

6. A markerless radiotherapy fast positioning and repositioning device as claimed in claim 1, characterized in that: The adapter at the rear end of the bed is a customized device, adapted to fit the hospital accelerator bed.

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