Nuclear magnetic image quality control die body capable of being assembled

Abstract

The utility model discloses a nuclear magnetic image quality control die body capable of being assembled, and belongs to the technical field of nuclear magnetic simulation positioning machine quality control measurement. The die body comprises a fixed bottom plate and a plurality of cube geometric deformation modules; a first protruding part is arranged on one end face of the cube geometric deformation module, a concave part is arranged on the other end face opposite to the end face where the first protruding part is located, and the fixed bottom plate comprises a bottom plate base body and second protruding parts evenly arranged on the bottom plate base body. The concave part is detachably connected with the first protruding part or the second protruding part in a matched mode. According to the mold body, the shape and range of geometric deformation measurement are flexibly selected through combination, and geometric deformation control measurement items are completed. A user can customize the die body combination according to specific quality control standards and requirements, so that the accuracy and reliability of the nuclear magnetic simulation positioning machine in actual radiotherapy clinical application are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of quality control measurement of nuclear magnetic resonance simulation positioning machines, and in particular relates to an assembleable nuclear magnetic resonance imaging quality control phantom. Background Art

[0002] In radiotherapy, quality control of MRI simulation positioning machines is very important. The quality control of MRI simulation positioning includes positioning laser lights, positioning beds, images, etc. Geometric deformation measurement is one of the tasks of quality control. However, in the prior art, there is no geometric deformation phantom that can select the size. Therefore, the development of a geometric deformation phantom that can flexibly select the shape and range of geometric deformation measurement through combination has important application value for quality control. Summary of the invention

[0003] The purpose of the embodiment of the utility model is to provide an assembleable nuclear magnetic resonance imaging quality control phantom, aiming to solve the defect problem that the existing geometric deformation measurement phantom lacks the flexibility to combine a large range of geometric deformations. The nuclear magnetic resonance imaging quality control phantom of the utility model can achieve the effect of a flexible combination of a large range of geometric deformation phantoms.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An assembleable nuclear magnetic resonance imaging quality control phantom comprises: a fixed base plate and a plurality of cube geometric deformation modules; a first protrusion is arranged on one end face of the cube geometric deformation module, a recess is arranged on the other end face opposite to the end face where the first protrusion is located, and a positioning mark cross is arranged on the end face where the first protrusion is located; the fixed base plate comprises a base plate substrate and second protrusions uniformly arranged on the base plate substrate; the recess is matched with the first protrusion or the second protrusion and can be detachably connected.

[0006] By matching and assembling the recessed portion on the cube geometric deformation module with the second protruding portion on the fixed base plate or the first protruding portion on the adjacent cube geometric deformation module, the geometric deformation measurement phantom can be flexibly combined with a large range of geometric deformations as needed, and a flexibly combinable large range of geometric deformation phantom effects can be achieved.

[0007] As a preferred embodiment, the cube geometric deformation module includes a module shell and a plurality of agar balls, and the agar balls are evenly arranged inside the module shell. When scanning the phantom, the unique marks and size positions of the internal agar balls can be obtained.

[0008] As a preferred embodiment, the module shell includes a first shell component, two second shell components and a third shell component which are bonded in sequence, and semicircular grooves are evenly arranged on the bonding surfaces of the first shell component, the second shell component and the third shell component, and the two semicircular grooves form a spherical accommodating cavity after bonding and assembly.

[0009] As a preferred embodiment, the agar ball is matched with the spherical containing cavity, and the agar ball is arranged in the spherical containing cavity.

[0010] As a preferred embodiment, the first protrusion is preferably arranged at the center of the end surface.

[0011] As a preferred embodiment, the first protrusion is preferably a cylindrical protrusion.

[0012] As a preferred embodiment, the intersection point of the positioning mark cross lines is arranged opposite to the center point of the first raised portion.

[0013] As a preferred embodiment, the recessed portion is preferably a cylindrical recessed portion.

[0014] As a preferred embodiment, the second protrusion is preferably a cylindrical protrusion, and further preferably, the first protrusion and the second protrusion have the same shape.

[0015] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0016] The assemblable nuclear magnetic resonance imaging quality control phantom of the utility model can flexibly select the shape and range of geometric deformation measurement through combination to complete the geometric deformation quality control measurement project. The quality control phantom of the utility model can be used to adjust and reorganize the various parts of the phantom according to needs, and combined with the agar balls evenly arranged in the cube geometric deformation module, a variety of different geometric shapes and sizes can be simulated and measured. Through different combinations, the phantom can adapt to different testing needs, such as simulating anatomical structures of different parts or testing the performance of nuclear magnetic resonance simulation positioning machines under different conditions. This flexibility not only improves the applicability of the quality control phantom, but also increases the diversity and comprehensiveness of the test. Users can customize the phantom combination according to specific quality control standards and requirements, thereby ensuring the accuracy and reliability of the nuclear magnetic resonance simulation positioning machine in actual clinical applications of radiotherapy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 2. It is a schematic diagram of the first-view structure of the cube geometric deformation module in the embodiment;

[0018] Figure 2 2. It is a schematic diagram of the second viewing angle structure of the cube geometric deformation module in the embodiment;

[0019] Figure 3 This is a schematic diagram of the front structure of the cube geometric deformation module in the embodiment;

[0020] Figure 4 For along Figure 3 Schematic diagram of the cross-sectional structure along the AA section line;

[0021] Figure 5 This is a schematic diagram of the structure of the fixed bottom plate in the embodiment;

[0022] Figure 6 It is a structural schematic diagram of a combination of a fixed base plate and a plurality of cube geometric deformation modules in an embodiment;

[0023] Figure 7 It is a schematic diagram of a top view of a structure of a combination of a fixed bottom plate and a plurality of cube geometric deformation modules in an embodiment;

[0024] Figure 8 For along Figure 7 Schematic diagram of the cross-sectional structure along the BB section line. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] At present, in radiotherapy, the geometric deformation measurement phantom lacks the defect of flexible combination of large-scale geometric deformation. Based on the above defect, the utility model provides an assembleable nuclear magnetic resonance imaging quality control phantom.

[0031] Example

[0032] like Figures 1 to 8 As shown, an assemblable nuclear magnetic resonance image quality control phantom comprises: a fixed base plate 1 and a plurality of cube geometric deformation modules 2; a first protrusion 21 is arranged on one end face of the cube geometric deformation module 2, a recessed portion 22 is arranged on the other end face opposite to the end face where the first protrusion 21 is located, and a positioning mark cross line 23 is arranged on the end face where the first protrusion 21 is located; the fixed base plate 1 comprises a base plate substrate 11 and second protrusions 12 uniformly arranged on the base plate substrate 11; the recessed portion 22 is matched with the first protrusion 21 or the second protrusion 12 and can be detachably connected.

[0033] By matching and assembling the recessed portion 22 on the cube geometric deformation module 2 with the second raised portion 12 on the fixed base plate 1 or the first raised portion 21 on the adjacent cube geometric deformation module 2, the geometric deformation measurement phantom can be flexibly combined with a large range of geometric deformations as needed, thereby achieving a flexibly combinable large range of geometric deformation phantom effects.

[0034] As a preferred embodiment, the cube geometric deformation module 2 includes a module shell 24 and a plurality of agar balls 25, and the agar balls 25 are evenly arranged inside the module shell 24. When scanning the phantom, the unique markings and size positions of the agar balls 25 inside are obtained. In a specific embodiment, the size of the cube geometric deformation module 2 is 4.5 cm×4.5 cm×4.5 cm.

[0035] As a preferred embodiment, the module shell 24 includes a first shell component 241, two second shell components 242 and a third shell component 243 which are bonded in sequence. Semicircular grooves are evenly arranged on the bonding surfaces of the first shell component 241, the second shell component 242 and the third shell component 243, and the two semicircular grooves form a spherical accommodating cavity for accommodating the agar balls after bonding and assembly.

[0036] As a preferred embodiment, the agar ball 25 is matched with the spherical receiving cavity, and the agar ball 25 is arranged in the spherical receiving cavity. In a specific embodiment, the agar ball 25 is a sphere with a diameter of 0.5 cm, and the distance between the centers of adjacent agar balls is 1.5 cm.

[0037] As a preferred embodiment, the first protrusion 21 is preferably arranged at the center of the end surface.

[0038] As a preferred embodiment, the first protrusion 21 is preferably a cylindrical protrusion. In a specific embodiment, the cylindrical protrusion is a cylindrical protrusion with a diameter of 1 cm and a height of 0.3 cm.

[0039] As a preferred embodiment, the intersection of the positioning mark cross lines 23 is arranged opposite to the center point of the first raised portion 21. In a specific embodiment, the line width of the positioning mark cross lines 23 is 1 mm.

[0040] As a preferred embodiment, the recessed portion 22 is preferably a cylindrical recessed portion. In a specific embodiment, the cylindrical recessed portion is a cylindrical recessed portion with a diameter of 1.05 cm and a height of 0.3 cm.

[0041] As a preferred embodiment, the second protrusion 12 is preferably a cylindrical protrusion. More preferably, the first protrusion 21 and the second protrusion 12 have the same shape.

[0042] In a specific embodiment, the module housing 24 is a module housing made of acrylic material, and the fixed base plate 1 is a fixed base plate made of acrylic material.

[0043] In a specific embodiment, the fixed base plate 1 is selected to be 100 cm long, 60 cm wide, and 5 cm high; there are 13×21 second protrusions 12 on the top of the fixed base plate 1, and the cylindrical volume of the second protrusion 12 is the same as the shape of the first protrusion 21, with a diameter of 1 cm and a height of 0.3 cm, and is used to connect the cube geometric deformation module.

[0044] In a specific embodiment, during the combination of the cube geometric deformation module 2 and the fixed base plate 1, the user can flexibly select the range of geometric deformation measurement, and can stack multiple layers of cube geometric deformation modules in three-dimensional directions to form a three-dimensional geometric deformation model. By scanning the model, the unique mark and size position of the internal agar sphere are obtained, and compared with the actual size, the geometric deformation error is calculated.

[0045] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0046] The assemblable nuclear magnetic resonance imaging quality control phantom of the utility model can flexibly select the shape and range of geometric deformation measurement through combination to complete the geometric deformation quality control measurement project. The quality control phantom of the utility model can be used to adjust and reorganize the various parts of the phantom according to needs, and combined with the agar balls evenly arranged in the cube geometric deformation module, a variety of different geometric shapes and sizes can be simulated and measured. Through different combinations, the phantom can adapt to different testing needs, such as simulating anatomical structures of different parts or testing the performance of nuclear magnetic resonance simulation positioning machines under different conditions. This flexibility not only improves the applicability of the quality control phantom, but also increases the diversity and comprehensiveness of the test. Users can customize the phantom combination according to specific quality control standards and requirements, thereby ensuring the accuracy and reliability of the nuclear magnetic resonance simulation positioning machine in actual clinical applications of radiotherapy.

[0047] 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. An assembleable nuclear magnetic resonance imaging quality control phantom, characterized in that: include: A fixed base plate and a number of cube geometric deformation modules; A first protrusion is arranged on one end face of the cube geometric deformation module, and a recessed portion is arranged on the other end face opposite to the end face where the first protrusion is located, and a positioning mark cross line is arranged on the end face where the first protrusion is located; the fixed base plate includes a base plate substrate and second protrusions evenly arranged on the base plate substrate; the recessed portion is matched with the first protrusion or the second protrusion and can be detachably connected.

2. The assemblable nuclear magnetic resonance imaging quality control phantom according to claim 1, characterized in that: The cube geometric deformation module comprises a module shell and a plurality of agar balls, and the agar balls are evenly arranged inside the module shell.

3. The assemblable nuclear magnetic resonance imaging quality control phantom according to claim 2, characterized in that: The module shell includes a first shell component, two second shell components and a third shell component which are bonded in sequence. Semicircular grooves are evenly arranged on the bonding surfaces of the first shell component, the second shell component and the third shell component. The two semicircular grooves form a spherical accommodating cavity after bonding and assembly.

4. The assemblable nuclear magnetic resonance imaging quality control phantom according to claim 3, characterized in that: The agar ball is matched with the spherical containing cavity, and the agar ball is arranged in the spherical containing cavity.

5. The assemblable nuclear magnetic resonance imaging quality control phantom according to claim 1, characterized in that: The first protrusion is arranged at the center of the end surface.

6. The assemblable nuclear magnetic resonance imaging quality control phantom according to claim 1, characterized in that: The first protrusion is a cylindrical protrusion.

7. The assemblable nuclear magnetic resonance imaging quality control phantom according to claim 5, characterized in that: The intersection point of the positioning mark cross lines is arranged opposite to the center point of the first protrusion.

8. The assemblable nuclear magnetic resonance imaging quality control phantom according to claim 1, characterized in that: The recessed portion is a cylindrical recessed portion.

9. The assemblable nuclear magnetic resonance imaging quality control phantom according to claim 1, characterized in that: The second protrusion is a cylindrical protrusion.

10. The assemblable nuclear magnetic resonance imaging quality control phantom according to claim 1, characterized in that: The first protrusion and the second protrusion have the same shape.

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