Full-angle fixing device for magnetic resonance water model
The water model fixing device, with its spherical outer shell and internal air bladder structure, solves the problems of water model positioning accuracy and angle scanning, achieving full-angle detection and cost reduction, while protecting the water model from damage.
Patent Information
- Application Number
- CN202423024846.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-09
AI Technical Summary
In existing technologies, water models require high positioning accuracy in magnetic resonance imaging, which leads to increased manufacturing costs or time-consuming and labor-intensive adjustments. Furthermore, water models of different shapes cannot achieve full-angle scanning.
A magnetic resonance water model omnidirectional fixing device was designed, which adopts a spherical shell and an inner air bladder structure. The water model is clamped by the air bladder and can be rotated to adjust its position. It is suitable for cubic, cylindrical and spherical water models, reducing manufacturing difficulty and cost.
It enables full-angle positioning and adjustment of water models, reducing manufacturing difficulty and cost, while providing protection in magnetic resonance testing and improving testing efficiency.
Smart Images
Figure CN223664765U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a magnetic resonance detection equipment technical field, concretely relates to a magnetic resonance water model full angle fixing device. BACKGROUND
[0002] In the magnetic resonance imaging (MRI) detection experiment, the uniformity of the magnetic resonance equipment scanning image, the geometric distortion, the artifact, the ghost, the spatial resolution, the two-dimensional scanning layer thickness, the SAR value of the magnetic resonance equipment and the like need to be detected in advance, and usually cannot be directly carried out human experiment, but need to use the water model to carry out the experiment or determination.
[0003] When using the water model to test, the water model needs to be positioned in the vertical direction and the horizontal direction, and the required positioning accuracy is reached; at present, the water model is usually supported and positioned by the water model support directly placed on the bulk coil, which requires that the size error of each positioning surface of the bulk coil for positioning the water model support is within the required range, or the corresponding position of the water model support is adjusted to meet the positioning requirement of the water model; if the size error of each positioning surface of the bulk coil for positioning the water model support is ensured within the required range, the manufacturing precision of the bulk coil needs to be improved, and due to the limitation of the structure and the manufacturing process of the bulk coil, the manufacturing cost will inevitably increase; if the position of the water model support is adjusted to meet the positioning requirement, when the positioning error cannot meet the requirement, the adjustment is carried out by adding pads, which is time-consuming and inefficient.
[0004] At the same time, the water model used for magnetic resonance imaging detection experiment can be roughly divided into three shapes of cube, cylinder and sphere; in the detection process, different angles of the water model need to be scanned to obtain the required image, but the cube and cylinder water model can only be fixed at a specific angle due to the shape, and cannot be scanned at other angles at will, and the spherical water model needs to be designed with a flat bottom for positioning, and cannot be placed upside down or detected at other special angles.
[0005] Therefore, it is an urgent problem to develop and design a full-angle fixing device which can not only adjust the position of the water model conveniently, but also reduce the manufacturing difficulty and manufacturing cost of related components. UTILITY MODEL CONTENTS
[0006] The utility model provides a kind of full-angle fixing device of magnetic resonance water phantom, water phantom can be placed in the inside of spherical shell, respectively to the first inner cavity air bag and the second inner cavity air bag inside inflation, the position of water phantom can be adjusted to the ball center of spherical shell and clamped and fixed, it is suitable for fixing water phantom of various shapes;Spherical shell can be placed on the spherical groove of base, and the position of water phantom can be conveniently adjusted by the mode of rotating spherical shell, realize the full-angle detection of water phantom, simple structure, low cost.
[0007] In order to realize the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:
[0008] The utility model provides a kind of full-angle fixing device of magnetic resonance water phantom, including:
[0009] Base, the upper surface of the base has spherical groove;
[0010] Hollow spherical shell, part of the spherical shell is placed in the spherical groove, the outer surface of the spherical shell is attached to the inner wall surface of the spherical groove;The spherical shell is spliced by first shell and second shell, the first inner cavity air bag is arranged in the first shell, and the second inner cavity air bag is arranged in the second shell;When the first shell and the second shell are spliced to form the spherical shell, the first inner cavity air bag and the second inner cavity air bag are located inside the spherical shell.
[0011] As a preferred technical scheme, water phantom is placed in the ball center inside the spherical shell, and the first inner cavity air bag and the second inner cavity air bag clamp and fix water phantom.
[0012] As a preferred technical scheme, the shape of water phantom is set as cube, cylinder or sphere.
[0013] As a preferred technical scheme, the spherical shell, the first inner cavity air bag and the second inner cavity air bag are made of transparent material.
[0014] As a preferred technical scheme, the base, the spherical shell, the first inner cavity air bag and the second inner cavity air bag are made of non-magnetic material.
[0015] As a preferred technical scheme, the outer surface of the first shell is provided with the first air hole communicated with the first inner cavity air bag, and the first air hole is provided with valve core.
[0016] As a preferred technical scheme, the outer surface of the second shell is provided with the second air hole communicated with the second inner cavity air bag, and the second air hole is provided with valve core.
[0017] As a preferred technical scheme, the first shell and the second shell are both hemispherical.
[0018] As a preferred technical scheme, the connection part of the first shell and the second shell is respectively provided with an external thread and an internal thread, and the first shell is screwed with the second shell.
[0019] As a preferred technical scheme, the lower surface of the base is provided as a convex arc surface.
[0020] The beneficial effects of the utility model are shown in that:
[0021] 1. The first shell and the second shell are separated, the water phantom can be placed in the spherical shell, the first inner cavity air bag and the second inner cavity air bag are inflated respectively, the position of the water phantom can be adjusted to the spherical center of the spherical shell and clamped and fixed, and the water phantom of various shapes can be fixed.
[0022] 2. During the magnetic resonance detection, the whole magnetic resonance equipment can vibrate, the water phantom is wrapped in the spherical shell, even if the water phantom falls off, the spherical shell and the inner cavity air bag can protect the water phantom, and the water phantom with a fragile structure is not damaged. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a whole structure schematic view of an embodiment of the utility model magnetic resonance water phantom full-angle fixing device.
[0024] Figure 2 It is a structure schematic view of the first shell and the second shell in the utility model. Figure 1
[0025] Figure 3 It is a structure schematic view of the base in the utility model. Figure 1
[0026] In the figure: 1-base, 11-spherical surface groove, 12-arc surface, 2-spherical shell, 21-first shell, 22-second shell, 23-first inner cavity air bag, 24-second inner cavity air bag, 25-first air hole, 26-external thread, 27-internal thread. DETAILED DESCRIPTION
[0027] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in combination with the drawings.
[0028] Please refer to Figures 1-3 This invention provides an embodiment of a magnetic resonance water phantom omnidirectional fixing device, comprising a base 1 and a hollow spherical shell 2; the upper surface of the base 1 has a spherical groove 11, and part of the spherical shell 2 is placed in the spherical groove 11, with the outer surface of the spherical shell 2 fitting against the inner wall of the spherical groove 11; the spherical shell 2 can be easily rotated and can be positioned at any specific location after rotation; the spherical shell 2 is assembled from a first shell 21 and a second shell 22, with the first shell 21 located within the second shell 22. Above, the first shell 21 is provided with a first inner cavity airbag 23, and the second shell 22 is provided with a second inner cavity airbag 24. When the first shell 21 and the second shell 22 are spliced to form a spherical shell 2, the first inner cavity airbag 23 and the second inner cavity airbag 24 are both located inside the spherical shell 2. When the water model is placed inside the spherical shell 2, air is injected into the first inner cavity airbag 23 and the second inner cavity airbag 24 respectively, which can adjust the position of the water model to the center of the spherical shell 2 and clamp and fix it. It is suitable for fixing water models of various shapes.
[0029] It should be noted that water models are usually designed to be cubes, cylinders, or spheres.
[0030] Furthermore, the spherical shell 2, the first inner cavity airbag 23, and the second inner cavity airbag 24 are preferably made of transparent material, which allows for easy observation of the position of the water model inside the spherical shell 2.
[0031] Furthermore, the base 1, the spherical shell 2, the first inner cavity airbag 23, and the second inner cavity airbag 24 are all preferably made of non-magnetic materials, so as not to affect the magnetic resonance imaging detection experiment of the water model.
[0032] In this embodiment, please refer to Figure 1 The outer surface of the first housing 21 should be provided with a first air hole 25 communicating with the first inner cavity airbag 23. The first air hole 25 is provided with a valve core, which can conveniently inflate and deflate the first inner cavity airbag 23. Similarly, the outer surface of the second housing 22 should be provided with a second air hole communicating with the second inner cavity airbag 24. The second air hole is provided with a valve core, which can conveniently inflate and deflate the second inner cavity airbag 24.
[0033] For further details, please refer to Figure 1 and Figure 2 The first shell 21 and the second shell 22 are preferably hemispherical, which facilitates merging and disassembly, and also makes it easy to adjust the water model to the center of the spherical shell 2. In other embodiments, the first shell 21 and the second shell 22 may also be set to different sizes to facilitate splicing and disassembly and to facilitate positioning of the water model.
[0034] For details, please refer to Figure 2The connecting part of the first shell 21 and the second shell 22 is respectively provided with an external thread 26 and an internal thread 27, and the first shell 21 and the second shell 22 are detachably connected through the threaded connection; in other embodiments, the first shell 21 and the second shell 22 can also be connected through clamping or interference fit, so as to be conveniently connected and separated.
[0035] In the embodiment, please refer to Figure 1 and Figure 3 The lower surface of the base 1 is provided with a convex arc surface 12, which is matched with the shape of the inner cavity of the magnetic resonance device, so that the base 1 can be stably placed in the inner cavity of the magnetic resonance device.
[0036] Please refer to Figures 1-3 The specific use process of the utility model is as follows:
[0037] The gas in the first inner cavity air bag 23 and the second inner cavity air bag 24 is discharged, the water phantom to be detected is placed in the second shell 22, and the first shell 21 and the second shell 22 are connected to form a spherical shell 2.
[0038] The first air hole 25 and the second air hole are used to inject gas into the first inner cavity air bag 23 and the second inner cavity air bag 24 respectively, and the gas inflow of the first inner cavity air bag 23 and the second inner cavity air bag 24 is controlled, so that the water phantom is located at the center of the spherical cavity, and the first inner cavity air bag 23 and the second inner cavity air bag 24 fully wrap and position the water phantom.
[0039] The spherical shell 2 is placed on the spherical recess 11 of the base 1, the surface of the spherical recess 11 has a certain roughness to position the spherical shell 2, the base 1 and the spherical shell 2 are placed in the magnetic resonance detection position, and the spherical shell 2 is rotated to realize 360-degree omnidirectional observation of the water phantom.
[0040] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A full angle fixation device for magnetic resonance water phantom, characterized in that, The utility model relates to a kind of water mold display device, including: Base (1), the upper surface of the base (1) has spherical groove (11); Hollow spherical shell (2), part spherical shell (2) is placed in the spherical groove (11), the outer surface of the spherical shell (2) is attached to the inner wall surface of the spherical groove (11);The spherical shell (2) is spliced by first shell (21) and second shell (22), first inner cavity air bag (23) is equipped in the first shell (21), second inner cavity air bag (24) is equipped in the second shell (22);When the first shell (21) and the second shell (22) are spliced to form the spherical shell (2), the first inner cavity air bag (23) and the second inner cavity air bag (24) are located inside the spherical shell (2).
2. The full-angle fixation device for magnetic resonance water phantom according to claim 1, characterized in that, Water mold is placed at the spherical center inside the spherical shell (2), and the first inner cavity air bag (23) and the second inner cavity air bag (24) are clamped and fixed.
3. The full-angle fixation device for magnetic resonance water phantom of claim 2, wherein, The shape of water mold is set as cube, cylinder or sphere.
4. The full-angle fixation device for magnetic resonance water phantom of claim 1, wherein, The spherical shell (2), the first inner cavity air bag (23) and the second inner cavity air bag (24) are made of transparent material.
5. A full angle fixation device for magnetic resonance water phantom according to claim 1 or 4, characterized in that, The base (1), the spherical shell (2), the first inner cavity air bag (23) and the second inner cavity air bag (24) are made of non-magnetic material.
6. The full-angle fixation device for magnetic resonance water phantom of claim 1, wherein, The outer surface of the first shell (21) is provided with first air hole (25) communicated with the first inner cavity air bag (23), and valve core is arranged in the first air hole (25).
7. The full-angle fixation device for magnetic resonance water phantom according to claim 1 or 6, characterized in that, The outer surface of the second shell (22) is provided with second air hole communicated with the second inner cavity air bag (24), and valve core is arranged in the second air hole.
8. The full-angle fixation device for magnetic resonance water phantom of claim 1, wherein, The first shell (21) and the second shell (22) are both hemispherical.
9. The full-angle fixture for magnetic resonance water phantom of claim 8, wherein, The connecting portion of the first shell (21) and the second shell (22) is respectively provided with external thread (26) and internal thread (27), and the first shell (21) is threadedly connected with the second shell (22).
10. The full-angle fixture for magnetic resonance water phantom of claim 1, wherein, The lower surface of the base (1) is provided as convex arc surface (12).