CN218607762U

CN218607762U - Radiotherapy positioner

Info

Publication number: CN218607762U
Application number: CN202222080597.8U
Authority: CN
Inventors: 汪浩; 潘淑豪; 张明霞
Original assignee: First Affiliated Hospital of Anhui Medical University
Current assignee: First Affiliated Hospital of Anhui Medical University
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2023-03-14
Anticipated expiration: 2032-08-08

Abstract

The utility model discloses a radiotherapy positioner that can be used to magnetic resonance system, the sick bed that will pass through the support bed body and magnetic resonance equipment combines, when carrying out the magnetic resonance scanning through the support bed body, its image registers the deformation error that the integration has been overcome and has been mismatching aroused because of the bed surface with radiotherapy CT image, the precision of drawing a picture of tumour target area has been improved, radio frequency coil passes through the adapter structure and is fixed in on the support bed body, can be according to tumour regional adjusting position, easy to operate, the support bed body is fixed on scanning sick bed, the stability and the security of sweeping the in-process have been improved.

Description

Radiotherapy positioner

Technical Field

The utility model belongs to the radiotherapy field, concretely relates to radiotherapy positioner for among magnetic resonance system.

Background

The method has the advantages of improving the local control rate of tumors, reducing the toxic and side effects of normal tissues and improving the life quality of patients, and is the pursuit of radiotherapy and the core principle of current individualized and accurate treatment. Accurate delineation of the target area is a key factor affecting the quality of radiotherapy for the patient. At present, a simulated positioning system based on Computed Tomography (CT) is mainly adopted for radiotherapy positioning, and CT images are used for doctors to delineate a target area and organs at risk and are used for calculating radiotherapy dose. The CT image has higher resolution, can clearly image tissues such as bones, calcifications and the like, and can provide accurate reference for the positioning of the focus. However, CT has a better resolution only for tissue structures with different electron density or X-ray absorption characteristics and a poorer differentiation for different soft tissue structures with similar electron density including tumors. Therefore, the soft tissue resolution of the CT image is low, the CT image particularly has poor display on tumors of the head and neck, the prostate, the pelvic cavity and other soft tissue regions, a plurality of tumors are difficult to be distinguished from normal tissues, and the boundary is fuzzy. The soft tissue contrast of the MRI image just makes up the deficiency of the CT image, and the MRI is easier to see the smaller lesion position. The diagnosis MRI and CT fused image is used for target region delineation, and the target region delineation accuracy can be obviously improved.

When MRI imaging is carried out, the body position during diagnosis is inconsistent with the body position for radiotherapy positioning, a conventional MRI scanning bed is a curved surface, a radiotherapy positioning bed is a flat bed, and two modal images are easy to introduce large errors during image registration and have poor fusion effect; in addition, because of mechanical properties and stability, can't be directly used for radiotherapy patient MR scanning with radiotherapy location flat bed board.

Therefore, it is necessary to provide a radiotherapy positioning device for a magnetic resonance system to solve the above technical problems of the conventional radiotherapy positioning flat bed.

Disclosure of Invention

To prior art not enough, the utility model aims to disclose a radiotherapy positioner that can be used to magnetic resonance system, when carrying out the magnetic resonance scanning through the support bed body, its image registers the deformation error that the integration has overcome because of the bed surface is not matchd and arouses with radiotherapy CT image, has improved the accuracy of sketching of tumour target area. The radio frequency coil is fixed on the support bed body through the adapter structure, can adjust the position according to the tumor region, easily operation. The support bed body is fixed on the scanning sickbed, so that the stability and the safety in the scanning process are improved. Therefore, the radiotherapy positioning device solves the problems that when MRI imaging is carried out in the prior art, the body position during diagnosis is inconsistent with the body position of radiotherapy positioning, a conventional MRI scanning bed is a curved surface, a radiotherapy positioning bed is a flat bed, large errors are easily introduced when two modal images are aligned, and the fusion effect is poor.

The purpose of the utility model can be realized by the following technical scheme:

a radiotherapy positioning apparatus comprising:

the support bed body is used for supporting and positioning a detection object and is carried by a sickbed of the magnetic resonance equipment;

the radio frequency coil is used for collecting magnetic resonance imaging signals of a detected object, and the radio frequency coil is arranged on the support bed body and can adjust the position according to the tumor area.

As a further preferred scheme, a fixing structure is arranged on the support bed body, and the fixing structure is used for fixing the support bed body at a preset position of the hospital bed.

As a further preferred scheme, fixed knot constructs including the buckle, the buckle sets up on the relative support bed body diapire of support bed body and sick bed, the sick bed is offered and is used for supplying buckle male draw-in groove, and the joint cooperation through buckle and draw-in groove can make radiotherapy positioner install on the sick bed along the horizontal direction relatively fixed.

As a further preferred scheme, the fixed knot constructs including the stopper, the stopper setting is on the relative support bed body diapire of support bed body and sick bed, the sick bed is offered and is used for with stopper butt complex recess, realizes through stopper and recess cooperation that support bed body and sick bed are the relatively fixed on the horizontal direction.

As a further preferable scheme, a plurality of radiotherapy positioning marks are arranged on the support bed body.

As a further preferred scheme, the radiotherapy positioning mark comprises connectors which are arranged on the two side edges of the support bed body side by side, and the connectors are used for connecting radio frequency coils which are used for collecting magnetic resonance imaging signals of a detected object.

In a further preferred embodiment, the connection port is connected to a phantom adapter used in radiotherapy simulation, and the phantom adapter is connected to a phantom.

As a further preferred scheme, the connecting port is a hole, and an insertion end matched with the hole is arranged at a connecting part of the radio frequency coil and the phantom adapter and matched with the connecting port.

As a further preferred scheme, the connecting port is a clamping slot, and a connecting portion of the radio frequency coil and the phantom adapter, which is adapted to the connecting port, is provided with a clamping block matched with the clamping slot.

As a further preferred aspect, the support bed is a fibre reinforced composite bed.

The beneficial effect of this disclosure:

1. the radio frequency coil is arranged on the support bed body through the connecting port, the position of the coil can be adjusted according to the tumor area, and the operation is easy;

2. the radiotherapy positioning device is fixedly arranged on the magnetic resonance scanning bed through the fixing structure, so that the stability and the safety of a patient in the MR scanning process are ensured, the motion artifact is reduced, and the image quality is improved;

3. the connection mode who uses is block and plug structure, easily installs, dismantles, and whole process is convenient easy to operate, and has promoted the efficiency of whole scanning flow.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a radiotherapy positioning device provided by an embodiment of the present invention;

FIG. 2 isbase:Sub>A schematic cross-sectional view A-A of the structure shown in FIG. 1;

fig. 3 is a schematic structural view of the radiotherapy positioning device of the embodiment of the present invention installed on a hospital bed;

FIG. 4 is a schematic cross-sectional view B-B of the structure shown in FIG. 3;

FIG. 5 is an enlarged view of a portion of the structure shown in FIG. 4 at D;

FIG. 6 is a schematic cross-sectional view C-C of the structure shown in FIG. 3;

fig. 7 is an enlarged view of a portion of the structure shown in fig. 6 at E.

The reference numbers in the figures: 10-supporting the bed body; 11-connection port; 12-a bottom wall; 13-a top wall; 14-a hospital bed; 20-a radio frequency coil; 21-card slot; 22-a groove; 30-a fixed structure; 31-buckling; 32-a stopper; 40-phantom adapter.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

Referring to fig. 1, 2 and 3, a radiotherapy positioning device according to an embodiment of the present invention includes a support bed 10, a radio frequency coil 20 and a fixing structure 30.

The support bed body 10 is used for supporting and positioning a diagnosis object, the support bed body 10 is carried by a sickbed 14 of the magnetic resonance equipment, the surface of the top wall 13 of the support bed body is set to be a horizontal plane facing the detection object, a plurality of radiotherapy positioning marks are arranged on the support bed body 10, the surface of the bottom wall 12 of the support bed body faces the sickbed 14, and the length and the width of the support bed body can be matched according to the length and the width of the magnetic resonance sickbed; preferably, the support bed body 10 is made of fiber reinforced composite materials such as glass fiber and Kevlar fiber within the range of nuclear magnetic compatible susceptibility;

the radio frequency coil 20 is used for collecting magnetic resonance imaging signals of a detected object, the radio frequency coil 20 is fixed on the support bed body 10 through the connecting port 11, the position can be adjusted according to a tumor region, the radio frequency coil 20 is easy to mount and dismount, and the diameter of the radio frequency coil can be matched according to the aperture of magnetic resonance equipment;

the fixed structure 30 is arranged on the support bed body 10, and the fixed structure 30 is used for fixing the support bed body 10 at a preset position of the sickbed 14;

referring to fig. 1 and fig. 3, in the embodiment, the radiotherapy positioning mark includes connection ports 11 disposed on two side edges of the support bed 10 side by side, the connection ports 11 are used for fixing phantom adapters 40 used in radiotherapy simulation, and the radio frequency coil 20 and the phantom adapters 40 are movably connected to the support bed 10 through the connection ports 11; specifically, the connection port 11 may be a hole or a slot, and the radio frequency coil 20 and the phantom adapter 40 are fixed to the support bed 10 by plugging or fastening through the hole or the slot, which facilitates the movable fixing and detachment of the radio frequency coil 20 and the phantom adapter 40. It should be noted that the phantom adapter 40 is an adapting part of the radiotherapy simulation flat bed plate and the radiotherapy simulation accessory, and is used for fixing the radiotherapy simulation accessory on the radiotherapy simulation flat bed plate, for example, a phantom (not shown in the figure) required for radiotherapy in the prior art is laid on a patient and then placed on a bed body for treatment, because the phantom is movable, a connecting part, specifically 2 buttons, is arranged on the phantom adapter, and is connected with the phantom adapter 40 through the buttons to prevent the phantom adapter from sliding. Through design connector 11 on supporting bed body 10, but in this connector 11 of phantom adapter 40 joint to the fixed of phantom adapter 40 of being convenient for, and then can be fixed radiotherapy simulation accessory and radiotherapy positioner.

The support bed 10 is horizontally mounted on the patient bed 14, and the main function of the fixing structure 30 is to fix the support bed 10 relative to the patient bed 14 along the horizontal direction.

Referring to fig. 1, fig. 4 and fig. 5, as an implementation manner, the fixing structure 30 includes a buckle 31, the buckle 31 is disposed on the bottom wall 12 of the support bed 10 opposite to the patient bed 14, and the buckle 31 is used to be inserted into the slot 21 of the patient bed 14. Correspondingly, the hospital bed 14 is provided with a slot 21, and the slot 21 is used for inserting the buckle 31 on the support bed 10. It will be appreciated that the bottom wall 12 of the support bed 10 is the wall surface of the support bed 10 that is below in the direction of gravity when the support bed 10 is mounted on a hospital bed 14. When the support bed 10 is mounted on a patient bed 14, the plane of the bottom wall 12 of the support bed coincides with the upper surface of the patient bed 14. Through the clamping fit of the clamp 31 and the clamp groove 21, the support bed body 10 can be relatively and fixedly installed on the hospital bed 14 along the horizontal direction, and the smooth proceeding of the MR scanning is ensured.

Further, referring to fig. 1, in an embodiment, the number of the fasteners 31 is multiple, and the multiple fasteners 31 are distributed at two opposite side edges of the support bed 10 along the longitudinal direction of the support bed 10. The reliable fixation of the support bed body 10 and the sickbed 14 is further ensured by the plurality of buckles 31 evenly distributed on the two sides of the support bed body 10.

Referring to fig. 1, fig. 6 and fig. 7, as another practical implementation manner, the fixing structure 30 includes four limiting blocks 32, and the limiting blocks 32 are disposed on the bottom wall 12 of the support bed 10 opposite to the sickbed 14, and are used for abutting against and matching with the groove wall of the groove 22 of the sickbed 14. Correspondingly, a sunken groove 22 is formed in the surface of the hospital bed 14, and the groove 22 is used for abutting and matching with a limit block 32 on the support bed 10. As shown in fig. 1, four stoppers 32 are symmetrically disposed two by two on opposite side edges of the bottom wall 12 of the support bed 10. The relative fixation of the support bed body 10 and the sickbed 14 in the horizontal direction can be realized by the matching of the limiting blocks 32 and the grooves 22 of the sickbed 14.

It is worth mentioning that the hospital bed 14 is designed with a structure for cooperating with the support bed 10. Referring to fig. 5, a hospital bed 14 is provided with a slot 21, and the slot 21 is used for inserting a buckle 31 on the support bed 10. Referring to fig. 7, a sunken groove 22 is formed on the surface of the hospital bed 14, and the groove 22 is used for abutting and matching with a limit block 32 on the support bed 10. The clamping grooves 21 and the grooves 22 are matched with the buckles 31 and the limiting blocks 32 of the support bed body 10, so that the support bed body 10 is reliably mounted on the sickbed 14.

The invention realizes the magnetic resonance radiotherapy simulation positioning by utilizing the traditional diagnosis magnetic resonance equipment, and the specific operation process comprises the following steps: and (1) installing a support bed body 10. The support bed body 10 is arranged on a sickbed 14 of the magnetic resonance equipment, and the support bed body is fixed by utilizing a buckle 31 and a limiting block 32 on the bottom wall 12 of the support bed body; after the magnetic resonance scanning is finished, the support bed body can be detached by pulling out the buckle 31, and the installation and the detachment are simple and easy to operate. And (2) fixing the phantom. The phantom adapter 40 is fixed on the support bed body 10 by using the connecting ports 11, and the two sides of the support bed body 10 are respectively provided with a row of connecting ports 11, so that the fixing position can be adjusted according to requirements; the connecting port 11 is a hole (or a clamping groove), so that the phantom adapter 40 is easy to movably fix and disassemble; the phantom is fixed by the phantom adapter 40, so that the body position of the patient is prevented from moving in the magnetic resonance scanning process. And (3) adjusting the body position of the patient. The patient lies and carries out magnetic resonance scanning in the phantom, adjusts its position to unanimous when with radiotherapy CT simulation location to this error that arouses because of the position difference when avoiding MRI and CT image to fuse realizes the accurate delineation of target area then. And (4) installing the radio frequency coil 20. After the body position of the patient is adjusted, the radio frequency coil 20 is installed according to the scanning position, the radio frequency coil 20 is fixed by the connecting port 11, and the connecting port 11 is a hole (or a clamping groove), so that the radio frequency coil 20 is easy to movably fix and disassemble. And (5) magnetic resonance scanning. An appropriate imaging pulse sequence is selected according to the imaging requirements. And (6) disassembling in sequence. After the radiotherapy patient scanning is finished, the radio frequency coil 20, the phantom adapter 40 and the support bed body 10 are sequentially removed, and the magnetic resonance equipment is restored to a common state so as to be used for the common patient to carry out conventional magnetic resonance examination.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention according to the present application is not limited to the specific combination of the above-mentioned features, but also covers other embodiments where any combination of the above-mentioned features or their equivalents is made without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A radiation therapy positioning apparatus, comprising:

the support bed body (10) is used for supporting and positioning a detection object, and the support bed body (10) is carried by a sickbed (14) of the magnetic resonance equipment;

the radio frequency coil (20) is used for collecting magnetic resonance imaging signals of a detected object, and the radio frequency coil (20) is arranged on the support bed body (10) and can adjust the position according to a tumor area.

2. Radiotherapy positioning device according to claim 1, characterized in that a fixing structure (30) is arranged on the support bed (10), said fixing structure (30) being used to fix the support bed (10) in a predetermined position of the hospital bed (14).

3. Radiotherapy positioning device according to claim 2, characterized in that the fixing structure (30) comprises a buckle (31), the buckle (31) is disposed on the bottom wall (12) of the support bed body (10) opposite to the hospital bed (14), the hospital bed (14) is provided with a slot (21) for inserting the buckle (31), and the radiotherapy positioning device can be relatively and fixedly mounted on the hospital bed (14) along the horizontal direction by the clamping fit between the buckle (31) and the slot (21).

4. Radiotherapy positioning device according to claim 3, characterized in that the fixing structure (30) comprises a limiting block (32), the limiting block (32) is disposed on the bottom wall (12) of the support bed body (10) opposite to the hospital bed (14), the hospital bed (14) is provided with a groove (22) for abutting and matching with the limiting block (32), and the limiting block (32) and the groove (22) are matched to realize the relative fixation of the support bed (10) and the hospital bed (14) in the horizontal direction.

5. Radiotherapy positioning device according to claim 1, characterized in that a plurality of radiotherapy positioning marks are provided on the support bed (10).

6. The radiotherapy positioning device according to claim 5, characterized in that the radiotherapy positioning mark comprises connecting ports (11) which are arranged on two side edges of the support bed body (10) side by side, and the connecting ports (11) are used for connecting a radio frequency coil (20) which acquires magnetic resonance imaging signals of a detected object.

7. Radiotherapy positioning apparatus according to claim 6, characterized in that the connection port (11) is connected to a phantom adapter (40) used in radiotherapy simulation, the phantom adapter (40) being connected to a phantom.

8. Radiotherapy positioning device according to claim 6 or 7, characterized in that the connection port (11) is a hole, and the connection part of the radio frequency coil (20) and the phantom adapter (40) to which they are adapted is provided with an insertion end matching the hole.

9. Radiotherapy positioning device according to claim 6 or 7, characterized in that the connection port (11) is a slot, and the connection part of the radio frequency coil (20) and the phantom adapter (40) adapted thereto is provided with a fixture block matching with the slot.

10. Radiotherapy positioning device according to claim 1, characterized in that the support bed (10) is a fiber-reinforced composite bed.