Die body for quality control of nuclear magnetic simulation positioning machine

Abstract

The utility model discloses a die body for quality control of a nuclear magnetic simulation positioning machine, and belongs to the field of quality control measurement of the nuclear magnetic simulation positioning machine. The die body for quality control of the nuclear magnetic simulation positioning machine comprises a uniform image measurement module and a geometric deformation measurement module which are connected with each other, a laser lamp positioning groove is formed in the end face, close to the geometric deformation measurement module, of the uniform image measurement module, scale marks are arranged on the outer side of the uniform image measurement module and the outer side of the geometric deformation measurement module, and a horizontal adjusting protruding strip is arranged on the end face of the uniform image measurement module. According to the utility model, the die body has a multifunctional measuring capability, and the laser lamp positioning precision, the positioning bed precision, the geometric deformation and the image uniformity can be detected without replacing a measuring tool; the time for replacing the die body and re-positioning is greatly saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of quality control measurement of nuclear magnetic simulation positioning machines, and in particular relates to a phantom used for quality control of nuclear magnetic simulation positioning machines. Background Art

[0002] In radiotherapy, the quality control of the MRI simulation positioning machine is very important. The quality control content of the MRI simulation positioning machine includes positioning laser light, positioning bed, image and other contents. However, among the existing quality control phantoms, there is no phantom that can integrate laser light, positioning bed, and image measurement. Therefore, the development of a phantom that can realize the integration of positioning laser light, positioning bed, and image measurement is of great value and significance for the quality control of the MRI simulation positioning machine. Summary of the invention

[0003] The embodiment of the utility model provides a phantom for quality control of nuclear magnetic simulation positioning machine, aiming to solve the problem that there is no phantom that can integrate laser light, positioning bed, and image measurement in the existing quality control phantom. The quality control phantom in the utility model can measure the positioning accuracy of the laser light, the positioning bed accuracy and geometric deformation measurement, and the image uniformity measurement.

[0004] The utility model embodiment is achieved in this way:

[0005] A phantom for quality control of a nuclear magnetic simulation positioning machine comprises a uniform image measurement module and a geometric deformation measurement module which are connected to each other; a laser light positioning groove is arranged on the end face of the uniform image measurement module close to the geometric deformation measurement module, scale lines are arranged on the outside of the uniform image measurement module and the geometric deformation measurement module, and a horizontal adjustment convex strip is arranged on the end face of the uniform image measurement module.

[0006] Further preferably, the phantom used for quality control of the nuclear magnetic simulation positioning machine is a cylindrical structure; the uniform image measurement module and the geometric deformation measurement module constituting the phantom are both cylindrical structures, and one end face of the cylindrical structure of the uniform image measurement module is connected to the end face of the cylindrical structure of the geometric deformation measurement module.

[0007] Further preferably, the uniform image measurement module has an inner cavity, the inner cavity is filled with liquid, and the uniform image measurement module is used to measure image uniformity.

[0008] Further preferably, the geometric deformation measurement module includes a module housing, and a plurality of agar balls uniformly arranged in the module housing.

[0009] Further preferably, the module shell includes two end shell units and a plurality of intermediate shell units arranged between the two end shell units; the end shell units are connected to the intermediate shell units by adhesion, and the intermediate shell units are connected to each other by adhesion; semicircular grooves are evenly arranged on the adhesion surfaces of the end shell units and the intermediate shell units, and the two semicircular grooves form a spherical accommodating cavity after bonding and assembly.

[0010] Further preferably, the agar ball is matched with the spherical containing cavity, and the agar ball is arranged in the spherical containing cavity.

[0011] Preferably, the horizontal adjustment ridge is disposed on the end face of the uniform image measurement module away from the geometric deformation measurement module. Preferably, the horizontal adjustment ridge is located in the middle of the end face; when the phantom is positioned, the phantom can be leveled by placing a level gauge on the horizontal adjustment ridge.

[0012] Further preferably, the scale lines are arranged on the outside of the uniform image measurement module and the geometric deformation measurement module, and at the connection between the uniform image measurement module and the geometric deformation measurement module. The scale lines are used for scanning and positioning of the phantom.

[0013] Preferably, the laser light positioning groove is used for measuring the positioning accuracy of the laser light, and the groove distribution of the laser light positioning groove is a cross-line groove structure. Preferably, one groove of the cross-line groove is also provided with two groove lines parallel to the other groove. The mold body is positioned by the scale lines, and the cross lines in the module are scanned, and the positioning accuracy of the laser light can be obtained by the integrity and clarity of the cross lines.

[0014] Further preferably, the phantom used for quality control of the nuclear magnetic simulation positioning machine also includes a ruler; the ruler is arranged along the cylindrical side surface of the cylindrical structure of the phantom, and is used for measuring the entry and exit accuracy of the nuclear magnetic positioning bed.

[0015] The beneficial effects achieved by the utility model are as follows:

[0016] The phantom used for quality control of nuclear magnetic simulation positioning machines of the utility model has multifunctional measurement capabilities, and can complete the detection of laser light positioning accuracy, positioning bed accuracy, geometric deformation and image uniformity without changing the measuring tool; it greatly saves the time of replacing the phantom and repositioning, and improves work efficiency. In addition, there are no commercial phantoms specifically used to measure the positioning accuracy of laser lights on the market. The introduction of the utility model not only solves the problem of measuring the positioning accuracy of laser lights, but also can detect the positioning bed accuracy, geometric deformation and image uniformity, thereby effectively shortening the quality control time and improving the overall quality control efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a first structural schematic diagram of a phantom for quality control of a nuclear magnetic simulation positioning machine according to the utility model;

[0018] Figure 2 This is a second structural schematic diagram of the phantom used for quality control of a nuclear magnetic simulation positioning machine according to the utility model;

[0019] Figure 3 It is a schematic diagram of the side structure of the phantom used for quality control of the nuclear magnetic simulation positioning machine of the utility model;

[0020] Figure 4 This is a schematic diagram of the first exploded structure of the phantom used for quality control of a nuclear magnetic simulation positioning machine of the utility model;

[0021] Figure 5 This is a schematic diagram of the second explosion structure of the phantom used for quality control of the nuclear magnetic simulation positioning machine of the utility model. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0027] At present, there is a problem that the existing quality control phantoms do not have a phantom that can integrate laser lights, positioning beds, and image measurement. In order to solve the above technical problems, the utility model proposes a phantom for quality control of nuclear magnetic simulation positioning machines.

[0028] Example

[0029] like Figures 1 to 5 As shown, a phantom for quality control of a nuclear magnetic simulation positioning machine comprises a uniform image measurement module 1 and a geometric deformation measurement module 2 which are connected to each other; a laser light positioning groove 11 is arranged on the end face of the uniform image measurement module 1 close to the geometric deformation measurement module 2, scale lines 3 are arranged on the outer sides of the uniform image measurement module 1 and the geometric deformation measurement module 2, and a horizontal adjustment convex strip 12 is arranged on the end face of the uniform image measurement module 1.

[0030] Further preferably, the phantom for quality control of the nuclear magnetic simulation positioning machine is a cylindrical structure; the uniform image measurement module 1 and the geometric deformation measurement module 2 constituting the phantom are both cylindrical structures, and one end face of the cylindrical structure of the uniform image measurement module 1 is connected to the end face of the cylindrical structure of the geometric deformation measurement module 2. The connection method preferably adopts an adhesive connection; a conventional snap-on connection can also be selected as needed. In this embodiment, the cylindrical diameter of the phantom is 20 cm, and the overall length of the cylinder is 40.5 cm.

[0031] Further preferably, the uniform image measurement module 1 has an inner cavity filled with liquid, and the uniform image measurement module 1 is used to measure image uniformity. In this embodiment, the cylindrical diameter of the uniform image measurement module 1 is 20 cm, and the cylindrical length is 20 cm.

[0032] Further preferably, the geometric deformation measurement module 2 includes a module housing 21, and a plurality of agar balls evenly arranged in the module housing 21. In this embodiment, the cylinder diameter of the geometric deformation measurement module 2 is 20 cm, and the cylinder length is 20 cm; the geometric deformation measurement module 2 has 117 agar balls built in, the diameter of the agar balls is 0.5 cm, and the distance between the agar balls is 1.5 cm.

[0033] Further preferably, the module housing 21 includes two end housing units 211 and a plurality of intermediate housing units 212 disposed between the two end housing units; the end housing units 211 and the intermediate housing units 212 are connected by adhesion, and the intermediate housing units 212 are connected by adhesion; semicircular grooves 213 are evenly disposed on the adhesion surfaces of the end housing units 211 and the intermediate housing units 212, and the two semicircular grooves 213 form a spherical accommodation cavity after adhesive assembly. In this embodiment, there are two end housing units 211 and eight intermediate housing units 212; the end housing units 211 and the intermediate housing units 212 are both oblate cylindrical structures, with a cylindrical diameter of 20 cm and a cylindrical length of 2 cm.

[0034] Further preferably, the agar ball is matched with the spherical containing cavity, and the agar ball is arranged in the spherical containing cavity.

[0035] Further preferably, the horizontal adjustment rib 12 is arranged on the end face of the uniform image measurement module 1 away from the end of the geometric deformation measurement module 2. Further preferably, the horizontal adjustment rib 12 is located in the middle of the end face; when the phantom is positioned, the phantom level can be adjusted by placing a level on the horizontal adjustment rib 12. In this embodiment, the horizontal adjustment rib 12 is specifically 20 cm long, 0.8 cm wide, and 0.5 cm high.

[0036] Further preferably, the scale line 3 is arranged on the outside of the uniform image measurement module 1 and the geometric deformation measurement module 2, and at the connection between the uniform image measurement module 1 and the geometric deformation measurement module 2. The scale line 3 is used for the phantom scanning and positioning. In this embodiment, the width of the scale line 3 is 0.1 cm, and the depth of the depression is 0.3 cm.

[0037] Further preferably, the laser light positioning groove 11 is used for measuring the positioning accuracy of the laser light, and the groove distribution of the laser light positioning groove 11 is a cross-line groove structure. Further preferably, two groove lines parallel to the other groove are also arranged on one groove of the cross-line groove. The mold body is positioned by the scale line 3, and the cross line in the module is scanned to obtain the accuracy of the laser light positioning through the integrity and clarity of the cross line. In this embodiment, the width of the laser light positioning groove 11 is 0.25cm, the length of the vertical line from left to right is 9.6cm, 19.7cm, and 9.6cm respectively, the horizontal line is 17.9cm long, and the left and right vertical lines are 6.2cm away from the center line respectively. The depression thickness of the laser light positioning groove 11 is 0.5cm.

[0038] Further preferably, the phantom used for quality control of the nuclear magnetic simulation positioning machine also includes a scale 4; the scale 4 is arranged along the cylindrical side of the cylindrical structure of the phantom, and is used for measuring the entry and exit accuracy of the nuclear magnetic positioning bed.

[0039] The beneficial effects achieved by the utility model are as follows:

[0040] The phantom used for quality control of nuclear magnetic simulation positioning machines in this utility model has multifunctional measurement capabilities, and can complete the detection of laser light positioning accuracy, positioning bed accuracy, geometric deformation and image uniformity without changing the measuring tool; it greatly saves the time of replacing the phantom and repositioning, and improves work efficiency. In addition, there is no commercial phantom specifically used to measure the positioning accuracy of laser lights on the market. The introduction of this utility model not only solves the problem of measuring the positioning accuracy of laser lights, but also can detect the positioning bed accuracy, geometric deformation and image uniformity, thereby effectively shortening the quality control time and improving the overall quality control efficiency.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A phantom for quality control of a nuclear magnetic simulation positioning machine, characterized in that: It comprises a uniform image measurement module and a geometric deformation measurement module which are connected to each other; a laser light positioning groove is arranged on the end face of the uniform image measurement module close to the geometric deformation measurement module, scale lines are arranged on the outside of the uniform image measurement module and the geometric deformation measurement module, and a horizontal adjustment convex strip is arranged on the end face of the uniform image measurement module.

2. The phantom for quality control of nuclear magnetic simulation positioning machine according to claim 1, characterized in that: The phantom used for quality control of the nuclear magnetic simulation positioning machine is a cylindrical structure; the uniform image measurement module and the geometric deformation measurement module are both cylindrical structures, and one end face of the cylindrical structure of the uniform image measurement module is connected to the end face of the cylindrical structure of the geometric deformation measurement module.

3. The phantom for quality control of nuclear magnetic simulation positioning machine according to claim 1, characterized in that: The uniform image measurement module has an inner cavity which is filled with liquid.

4. The phantom for quality control of nuclear magnetic simulation positioning machine according to claim 1, characterized in that: The geometric deformation measurement module includes a module shell and a plurality of agar balls uniformly arranged in the module shell.

5. The phantom for quality control of nuclear magnetic simulation positioning machine according to claim 4, characterized in that: The module shell includes two end shell units and a plurality of intermediate shell units arranged between the two end shell units; the end shell units are connected to the intermediate shell units by adhesion, and the intermediate shell units are connected to each other by adhesion; semicircular grooves are evenly arranged on the adhesion surfaces of the end shell units and the intermediate shell units, and the two semicircular grooves form a spherical accommodating cavity after bonding and assembly.

6. The phantom for quality control of nuclear magnetic simulation positioning machine according to claim 5, characterized in that: The agar ball is matched with the spherical containing cavity, and the agar ball is arranged in the spherical containing cavity.

7. The phantom for quality control of nuclear magnetic simulation positioning machine according to claim 1, characterized in that: The horizontal adjustment convex strip is arranged on an end surface of the uniform image measuring module away from one end of the geometric deformation measuring module.

8. The phantom for quality control of nuclear magnetic simulation positioning machine according to claim 1, characterized in that: The scale lines are arranged on the outer sides of the uniform image measuring module and the geometric deformation measuring module, and at the connection between the uniform image measuring module and the geometric deformation measuring module.

9. The phantom for quality control of nuclear magnetic simulation positioning machine according to claim 1, characterized in that: The groove distribution of the laser light positioning groove is a cross-line groove structure.

10. The phantom for quality control of nuclear magnetic simulation positioning machine according to claim 1, characterized in that: It also includes a scale; the scale is arranged along the cylindrical side surface of the cylindrical structure of the mold body.

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