CN107638634B

CN107638634B - Isocenter calibration device

Info

Publication number: CN107638634B
Application number: CN201610580175.3A
Authority: CN
Inventors: 吴大可; 周付根; 姚进; 邓怀怀; 李超; 韦崇高
Original assignee: Radiation Therapy Medical Science & Technology Co ltd
Current assignee: Radiation Therapy Medical Science & Technology Co ltd
Priority date: 2016-07-21
Filing date: 2016-07-21
Publication date: 2024-03-15
Anticipated expiration: 2036-07-21
Also published as: CN107638634A

Abstract

The invention discloses an isocenter calibration device which is used for calibrating the isocenter position and precision of a C-shaped arm (1) in a C-arm imaging device, and comprises two sets of mapping tools (2) and mapping pointers (3) which are respectively arranged on two sides of the C-shaped arm (1), wherein the mapping tools (2) are sector-shaped rulers, the circular arc edges of the sector-shaped rulers are arranged in guide rails of the inner ring of the C-shaped arm (1), the sector-shaped radiuses are the same as the radius of the guide rails, the mapping pointers (3) are arranged at the center points of the mapping tools (2) and face the opposite side mapping tools (2), and when the two mapping tools (2) rotate relative to the C-shaped arm (1) at different speeds, the center positions of the C-shaped arm (1) are indicated by the two mapping pointers (3) respectively. The isocenter calibration device effectively solves the problems that the accuracy of the isocenter of radiotherapy is difficult to calibrate and the like.

Description

Isocenter calibration device

Technical Field

The invention relates to the technical field of medical equipment, in particular to an isocenter calibration device.

Background

In the radiotherapy process, the focus of the patient is accurately transferred to a standard treatment position under treatment equipment, namely, the focus is aligned to the radiotherapy isocenter of a C-arm image system to start treatment. Therefore, the accuracy of the center of the C-arm imaging system in the radiotherapy is particularly important, and the accuracy of the center of the radiotherapy must be ensured to be high. In the prior art, the accuracy of the radiotherapy isocenter of the C-arm image system is not easy to calibrate, the radiotherapy isocenter cannot be accurately calibrated through calibration equipment, the accuracy of the center cannot be clearly marked, and the accuracy of the radiotherapy isocenter cannot be guaranteed to have higher accuracy.

In summary, how to effectively solve the problems of difficult calibration of the isocenter precision of radiotherapy and the like is a problem that needs to be solved by those skilled in the art at present.

Disclosure of Invention

The invention aims to provide an isocenter calibration device which effectively solves the problems that the isocenter precision of radiotherapy is difficult to calibrate and the like.

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides an isocenter calibration device for the isocenter position and the precision of C type arm in the demarcation C arm image device, including set up respectively in two sets of mapping instrument and the mapping pointer of C type arm both sides, the mapping instrument is fan-shaped chi, its circular arc limit install in the guide rail of C type arm inner circle, and fan-shaped radius with guide rail radius is the same, the mapping pointer install in the central point department of mapping instrument and towards the mapping instrument of contralateral, when two the mapping instrument is with different speeds for the C type arm is rotatory, two the mapping pointer indicates the central point of C type arm in the center department respectively.

Preferably, the guide rails on two sides of the C-shaped arm are symmetrically distributed about the center of the C-shaped arm.

Preferably, the mapping pointer is a mapping pen, and the two mapping pens have different colors.

Preferably, the arc lengths of both of the mapping tools are the same.

Preferably, a slot is formed in the middle of the circular arc edge of the mapping tool.

Preferably, a sliding block matched with the guide rail is installed at the arc edge of the mapping tool.

The isocenter calibration device provided by the invention is used for calibrating the isocenter precision of the C-shaped arm in the C-arm imaging device. The isocenter calibration device comprises two sets of mapping tools and mapping pointers, one set of mapping tool and one set of mapping pointer are respectively arranged on two sides of the C-shaped arm, the two sets of mapping tools and the mapping pointers are oppositely arranged on the inner side of a rack guide rail of the C-shaped arm imaging system, a guide rail is arranged on an inner ring of the C-shaped arm, and the C-shaped arm is arranged in the guide rail of the inner ring. The mapping tool is a sector ruler, the radius of the sector ruler is the same as that of the guide rail, the arc edge of the mapping tool is arranged in the guide rail of the inner ring of the C-shaped arm, and the center point of the mapping tool faces the center of the C-shaped arm. The mapping pointer is arranged at the center point of the mapping tool and faces to the mapping tool on the opposite side, and when the two mapping tools rotate relative to the C-shaped arm at different speeds, the two mapping pointers respectively indicate the center position of the C-shaped arm at the center, so that the isocenter position and the accuracy of the C-shaped arm can be calibrated. If the shown mapping pointer is a mapping pen, a similar circle is drawn at the center after one circle of rotation, and the isocenter position and the accuracy of the C-shaped arm can be known through observation, measurement and analysis of the similar circles, namely the isocenter accuracy of the C-shaped arm is marked.

The isocenter calibration device provided by the invention can accurately calibrate the isocenter precision of the radiotherapy of the C-arm image system, the center precision can be clearly marked, the calibration result is accurate, the isocenter precision of the radiotherapy can be ensured to have higher precision according to the purposeful adjustment of the result, and the treatment effect is improved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an isocenter calibration apparatus according to an embodiment of the present invention;

fig. 2 is another view of fig. 1.

The figures are marked as follows:

a 1-C arm, a 2-mapping tool, and a 3-mapping pointer.

Detailed Description

The invention aims at providing an isocenter calibration device which effectively solves the problems that the isocenter precision of radiotherapy is difficult to calibrate and the like.

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an isocenter calibration device according to an embodiment of the present invention; fig. 2 is another view of fig. 1.

In a specific embodiment, the isocenter calibration device provided by the invention is used for calibrating the isocenter precision of the C-shaped arm 1 in the C-arm imaging device. The isocenter calibration device comprises two sets of mapping tools 2 and mapping pointers 3, one set of mapping tool 2 and mapping pointer 3 are respectively arranged on two sides of the C-arm 1, the isocenter calibration device is relatively arranged on the inner side of a frame guide rail of the C-arm image system, the inner ring of the C-arm 1 is provided with a guide rail, and the isocenter calibration device is arranged in the guide rail of the inner ring. The mapping tool 2 is a fan-shaped ruler, the radius of the fan shape is the same as that of the guide rail, the arc edge of the mapping tool is arranged in the guide rail of the inner ring of the C-shaped arm 1, and the center point of the mapping tool faces the center of the C-shaped arm 1. The mapping pointers 3 are installed at the center point of the mapping tool 2 and face the opposite side of the mapping tool 2, and when the two mapping tools 2 rotate at different speeds relative to the C-shaped arm 1, the two mapping pointers 3 respectively indicate the center position of the C-shaped arm at the center, so that the isocenter position and the accuracy of the C-shaped arm 1 can be calibrated. If the shown mapping pointer 3 is a mapping pen, a similar circle is drawn at the center after one circle of rotation, and the isocenter position and precision of the C-shaped arm 1 can be known by observing, measuring and analyzing the similar circles, namely the isocenter precision of the C-shaped arm 1 is marked.

The above-mentioned isocenter calibration device is only a preferred scheme, and is not limited to this, and on the basis, the specific adjustment can be made according to the actual needs, so that different embodiments can be obtained, the guide rails on both sides of the C-shaped arm 1 are symmetrically distributed about the center of the C-shaped arm 1, that is, the two sets of isocenter calibration devices are symmetrically distributed, and the guide rail centers of the C-shaped arms 1 on both sides can be respectively measured, so that the isocenter precision of the C-shaped arm 1 can be accurately calibrated.

Based on the specific implementation manner, a person skilled in the art can change the calibration device of the peer center according to different specific occasions, the mapping pointer 3 is a mapping pen, the mapping pen has the same color, and the mapping pens are not distinguished and are installed at will; the two mapping pens can be different in drawn color, and the circles drawn on two sides are different in color, so that the two mapping pens are easy to distinguish and compare and are more vivid.

Obviously, under the guidance of the concept, the person skilled in the art can make several changes to the specific embodiment according to specific occasions, and the arc lengths of the two mapping tools 2 are the same, that is, the sizes of the two mapping tools 2 are the same, so that the accuracy of calibrating the isocenter of the C-shaped arm 1 is more accurate. Of course, the arc lengths of the two mapping tools 2 are the same, but not the only preferred embodiment, and can also be different, so long as the same working requirement of the arc radius is met, the arc lengths of the mapping tools 2 can be determined according to practical application conditions, and the arc lengths are all within the protection scope of the present invention.

It should be noted that the isocenter calibration device provided by the invention should not be limited to this situation, and the middle part of the arc side of the calibration tool 2 is provided with a slot, the slot is not formed at the arc radius and the center point, the slot can be formed at the arc side or the arc side, the slot does not affect the isocenter precision of the calibration C-shaped arm 1, and the weight and the light design of the calibration tool 2 can be reduced. The size of the slot is not required, and the specific size and position can be determined according to the actual application condition.

According to the isocenter calibration device provided by the invention, under the condition that other parts are not changed, the arc edge of the calibration tool 2 is provided with the sliding block matched with the guide rail, the sliding block is driven to slide in the guide rail, the calibration tool 2 is easy to rotate in the guide rail, and the calibration process is smooth.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an isocenter calibration device, its characterized in that is arranged in calibrating isocenter position and precision of C type arm (1) among the C arm image device, including set up respectively in two sets of mapping instrument (2) and the mapping pointer (3) of C type arm (1) both sides, mapping instrument (2) are fan-shaped chi, its circular arc limit install in the guide rail of C type arm (1) inner circle, and fan-shaped radius with guide rail radius is the same, mapping pointer (3) install in the central point department of mapping instrument (2) and towards opposite side mapping instrument (2), when two mapping instrument (2) are with different speeds for C type arm (1) rotation, two mapping pointer (3) indicate the central point of C type arm (1) in the center department respectively.

2. Isocenter calibration device according to claim 1, wherein the guide rails on both sides of the C-arm (1) are symmetrically distributed about the center of the C-arm (1).

3. The isocenter calibration device according to claim 2, wherein the mapping pointer (3) is a mapping pen, and the two mapping pens have different colors.

4. An isocentric calibration apparatus according to claim 3, characterized in that the arc lengths of the two mapping tools (2) are identical.

5. The isocenter calibration device according to claim 4, wherein the middle of the circular arc edge of the mapping tool (2) is provided with a slot.

6. The isocentric calibration apparatus according to any of claims 1-5, characterized in that the circular arc edge of the mapping tool (2) is provided with a slider cooperating with the guide rail.