A test cell for artifact quantification measurements in a magnetic resonance environment

Abstract

The utility model belongs to the field of magnetic resonance imaging, concretely relates to a kind of test cell for artifact quantification measurement in magnetic resonance environment, including test cell body, adjustable positioning mechanism and fixed mechanism;Adjustable positioning mechanism is multi-axis adjusting mechanism, adjustable positioning mechanism sliding assembly in the lateral wall of test cell body;The end of adjustable positioning mechanism into test cell body inside installs sample one, and the spatial position of sample one in test cell body is adjusted by adjustable positioning mechanism;Fixed mechanism is fixedly assembled in the inside bottom surface of test cell body, and sample two is installed on fixed mechanism.Compared with prior art, the utility model solves the quantitative measuring device of the image artifact produced under a group of standard scanning conditions in the test device of artifact evaluation in prior art, and the detection of artifact imaging parameter of different materials in MR is realized in the scheme, to ensure that effective artifact evaluation data is output.

Description

Technical Field

[0001] This invention belongs to the field of magnetic resonance imaging, specifically relating to a test cell for quantifying artifacts in a magnetic resonance environment. Background Technology

[0002] Magnetic resonance imaging-guided high-intensity focused ultrasound (MRgHIFU) combines the advantages of both magnetic resonance imaging (MRI) and high-intensity focused ultrasound (HIFU), providing a non-surgical, environmentally friendly, and reusable treatment option. This revolutionary technology has demonstrated immense potential in clinical practice, with its applications expanding rapidly. Particularly in the treatment of breast fibroadenomas, MRgHIFU has become a highly promising and effective treatment method. Furthermore, its performance in improving treatment outcomes, shortening patient recovery time, and reducing treatment side effects is also outstanding, contributing to its widespread adoption in the medical field.

[0003] During the development of MRI gHIFU equipment, it is frequently necessary to evaluate artifacts in passive material magnetic resonance (MR) images to reduce their impact on examination results. Current artifact evaluation testing devices do not provide a quantitative measurement of image artifacts generated under a set of standard scanning conditions, and are particularly incompatible with strong magnetic environments.

[0004] This solution aims to provide a device for detecting artifact imaging parameters of different materials in MR. Utility Model Content

[0005] The purpose of this invention is to provide a test cell for quantifying artifacts in a magnetic resonance environment to solve at least one of the above-mentioned problems. This addresses the issue that existing artifact evaluation test devices cannot provide a quantitative measurement device for image artifacts generated under a set of standard scanning conditions. This solution enables the detection of artifact imaging parameters of different materials in MR, thereby ensuring the production of effective artifact evaluation data.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A test cell for quantification measurement of artifacts in a magnetic resonance environment includes a test cell body, an adjustable positioning mechanism, and a fixing mechanism.

[0008] The adjustable positioning mechanism is a multi-axis adjustment mechanism, which is slidably mounted on the side wall of the test pool body; one end of the adjustable positioning mechanism that extends into the test pool body is fitted with sample one, and the spatial position of sample one in the test pool body is adjusted by the adjustable positioning mechanism.

[0009] The fixing mechanism is fixedly assembled on the inner bottom surface of the test pool body, and sample two is installed on the fixing mechanism.

[0010] Preferably, the test pool body is a visual test pool, which facilitates observation of the internal conditions of the test pool body.

[0011] More preferably, the test pool body can be made of a transparent material, such as acrylic.

[0012] Preferably, the adjustable positioning mechanism is a three-axis adjustment mechanism, which includes an X-axis slider, a Y-axis slider, and a Z-axis slider.

[0013] The X-axis slider is slidably mounted between a pair of side walls of the test pool body;

[0014] The Y-axis slider is slidably mounted on the X-axis slider;

[0015] The Z-axis slider is slidably mounted on the Y-axis slider.

[0016] The three-axis adjustment mechanism facilitates the three-dimensional spatial movement of sample one within the test pool.

[0017] Preferably, the X-axis slider has slots at both ends, and the X-axis slider is slidably assembled with the side wall of the test cell body through the slots. Sliding the X-axis slider along the side wall of the test cell body can drive the Y-axis slider, Z-axis slider, and sample one to slide along the X-axis direction.

[0018] Preferably, the top end of the Y-axis slider is provided with a bent portion, and the Y-axis slider is slidably assembled with the X-axis slider through the bent portion;

[0019] The bent portion has a pin hole, and by inserting a pin into the pin hole, a sliding limiting structure is formed surrounding the X-axis slider. By sliding the Y-axis slider along the X-axis slider, the Z-axis slider and sample one can be driven to slide along the Y-axis direction.

[0020] Preferably, the Z-axis slider includes a groove and a latch. The Z-axis slider is slidably assembled with the Y-axis slider through the groove, and the sample is installed in the latch. The sample can be slid along the Z-axis direction by sliding the Z-axis slider along the Y-axis slider.

[0021] Preferably, the buckle has an adjustment connection hole, and the sample is tightened in the buckle by setting an adjustment connector in the adjustment connection hole, so as to lock the sample in the buckle.

[0022] Preferably, it includes one or both of the following:

[0023] i) The X-axis slider, Y-axis slider and Z-axis slider are respectively provided with handle connectors for abutment and positioning, so as to realize the locking of the X-axis slider, Y-axis slider and Z-axis slider respectively;

[0024] ii) The test pool body, the X-axis slider, and the Y-axis slider are respectively provided with measurement units for reading the position data of the X-axis slider, the Y-axis slider, and the Z-axis slider, so as to realize the reading of the positioning data of the X-axis slider, the Y-axis slider, and the Z-axis slider.

[0025] Preferably, the fixing mechanism includes a base, which is provided with a support groove and a mounting hole. The second sample is installed in the support groove, and the base is fixed to the inner bottom surface of the test pool body by a mounting member provided in the mounting hole, so as to maintain the second sample in a fixed positioning position inside the test pool body, and then the relative position of the two can be changed by adjusting the position of the first sample.

[0026] Preferably, the two ends of the support groove are respectively provided with binding holes. The second sample is limited to the support groove by the binding member passing through the binding hole, which further improves the stability of the second sample in the support groove, thereby ensuring that the position will not change due to unexpected external force during the test, resulting in test failure or invalidation of test results.

[0027] The working principle of this utility model is as follows:

[0028] Sample 1 is loaded into the adjustable positioning mechanism and positioned to the designated test location. Sample 2 is loaded into the fixing mechanism for restraint. Then, the test cell is filled with ambient liquid, and artifact testing in a magnetic resonance environment is performed. The position of Sample 1 is changed using the adjustable positioning mechanism as needed to obtain the artifact quantization values ​​of Sample 1 relative to Sample 2 at different positions.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] This invention designs a test cell for the quantitative measurement of artifacts in a magnetic resonance environment. It consists of a test cell body, an adjustable positioning mechanism, and a fixing mechanism. It can provide a set of standard scanning conditions for the quantitative measurement of image artifacts. Furthermore, in order to achieve comparative testing of a set of samples at different distances in a magnetic field, this invention also solves the technical difficulties by designing a three-axis movable and readable mechanism, realizing the adjustability of the spatial position, and providing operational functionality for the magnetic resonance material artifact evaluation experiment. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the front sectional view of the test cell;

[0032] Figure 2 This is a schematic diagram of the axial-lateral structure of the test cell;

[0033] Figure 3 This is a schematic diagram of the adjustable positioning mechanism;

[0034] Figure 4 This is a schematic diagram of the X-axis slider.

[0035] Figure 5 This is a schematic diagram of the Z-axis slider.

[0036] Figure 6 This is a structural diagram of the fixing mechanism;

[0037] Figure 7 This is a schematic diagram of the base structure;

[0038] In the picture:

[0039] 100 - Test pool body;

[0040] 200-Adjustable positioning mechanism; 201-X-axis slider; 2011-Slot; 202-Y-axis slider; 203-Z-axis slider; 2031-Threaded hole; 2032-Groove; 2033-Snap-fit; 204-Handle connector; 205-Sample 1; 206-Measuring unit; 207-Adjusting connection hole; 208-Pin block;

[0041] 300-Fixing mechanism; 301-Base; 3011-Binding hole; 3012-Support groove; 3013-Mounting hole; 302-Sample 2. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0043] Example

[0044] A test cell for artifact quantization measurement in a magnetic resonance environment, such as Figure 1-7 As shown, it includes a test pool body 100, an adjustable positioning mechanism 200, and a fixing mechanism 300;

[0045] The adjustable positioning mechanism 200 is a multi-axis adjustment mechanism, which is slidably mounted on the side wall of the test pool body 100. One end of the adjustable positioning mechanism 200 that extends into the test pool body 100 is fitted with a sample 205, and the spatial position of the sample 205 in the test pool body 100 is adjusted by the adjustable positioning mechanism 200.

[0046] The fixing mechanism 300 is fixedly assembled on the inner bottom surface of the test pool body 100, and sample 302 is installed on the fixing mechanism 300.

[0047] The test pool in this embodiment:

[0048] The test cell body 100 adopts a cubic structure. Taking the length direction of the test cell body 100 as the X-axis direction, the width direction of the test cell body 100 as the Y-axis direction, and the height direction of the test cell body 100 as the Z-axis direction, the following description is carried out.

[0049] The test cell body 100, as Figure 1 , 2 shown, is a visible test cell, and its internal cavity is used to accommodate the environmental liquid. Specifically, a transparent material is selected. At the same time, the material of the test cell body 100 also needs to take into account the corrosion resistance to the environmental liquid, the compatibility in the magnetic resonance environment, and to reduce the influence of the box body itself on the experimental temperature control. The test cell body 100 is particularly made of acrylic material with transparency, corrosion resistance, magnetic compatibility, and low thermal conductivity.

[0050] The adjustable positioning mechanism 200, as Figure 1-5 shown, adopts a three-axis adjustment mechanism, specifically including an X-axis slider 201, a Y-axis slider 202, and a Z-axis slider 203. The X-axis slider 201, as Figure 3 , 4 shown, has a "冖" structure, straddles the upper part of the side wall in the length direction of the test cell body 100, and the X-axis slider 201 forms a sliding assembly with the side wall (equipped with a slot guide rail) of the test cell body 100 through the slots 2011 provided at both ends and can slide along the X-axis direction. The Y-axis slider 202, as Figure 3 shown, has a bent part at the top and an extension section in the Z-axis direction. The Y-axis slider 202 also has a pair of oppositely arranged pin holes in the bent part. Furthermore, the Y-axis slider 202 can form an assembly structure surrounding the X-axis slider 201 by bypassing the bent part around the X-axis slider 201 and inserting the pin block 208 into the pin holes, so as to realize the sliding assembly of the Y-axis slider 202 on the X-axis slider 201 (equipped with a slot guide rail) between the two side walls of the test cell body 100 and can slide along the Y-axis direction. The Z-axis slider 203, as Figure 5 shown, is composed of a chute 2032 and a buckle 2033. The chute 2032 is a square ring structure, sleeved on the extension section of the Y-axis slider 202 and can slide along the extension section (equipped with a slot guide rail) of the Y-axis slider 202. The buckle 2033 is a C-shaped structure for loading the sample one 205.

[0051] Furthermore, an adjustment connection hole 207 is also opened on the buckle 2033 for setting an adjustment connecting piece to realize the tensioning of the sample one 205. Specifically, a combination of an adjustment screw hole and an adjustment screw is used. Furthermore, after the sample one 205 is loaded into the buckle 2033, the tensioning of the sample one 205 inside the buckle 2033 can be realized by screwing and tightening the adjustment connecting piece in the adjustment connection hole 207, ensuring that the sample one 205 will not shake or move during the adjustment process, resulting in inaccurate positioning.

[0052] Furthermore, handle connectors 204 for positioning and limiting the X-axis slider 201, Y-axis slider 202, and Z-axis slider 203 are respectively provided. These can be handle screws, such as... Figure 3 As shown. The handle connector 204 is provided at both ends of the X-axis slider 201, the top of the bent part of the Y-axis slider 202, and the back of the slide groove 2032 of the Z-axis slider 203 (opposite to the side where the buckle 2033 is provided). Each of these locations has a threaded hole 2031 for screwing the handle connector 204. Tightening and loosening the handle connector 204 enables the sliding adjustment and limit locking of each slider.

[0053] Furthermore, measurement units 206 are respectively provided on the test pool body 100, the X-axis slider 201, and the Y-axis slider 202, such as... Figure 2 , 3 As shown, it specifically adopts the form of a ruler. Specifically, the measuring unit 206 on the test cell body 100 is located near the X-axis slider 201 and is set along the X-axis direction; the measuring unit 206 on the X-axis slider 201 is set on the X-axis slider 201 along the extension direction of the X-axis slider 201, i.e., the Y-axis direction; the measuring unit 206 on the Y-axis slider 202 is set on the extension section of the Y-axis slider 202 along the extension direction of the extension section, i.e., the Z-axis direction. The setting of the measuring unit 206 allows for reading the three-coordinate position of sample 205 when the test cell is in use.

[0054] Fixed mechanism 300, such as Figure 6 , 7 As shown, it is composed of a base 301, a support groove 3012 mounted on the base 301, and a binding hole 3011 formed in the support groove 3012. Figure 7 The base 301 has mounting holes 3013 on both sides, allowing it to be assembled to the bottom of the test cell body 100 using mounting components (such as screws or pins). The support groove 3012 has a recessed arc-shaped section in the middle, matching the surface shape of the sample 302. Binding holes 3011 are located at both ends of the support groove 3012, used to bind the sample 302 placed on the support groove 3012 using binding components (such as straps or ties). In use, a pair of bases 301 are arranged in parallel, such as... Figure 6 It can be supported and bound from both ends of the sample to improve the limiting effect.

[0055] The entire structure of this test pool is made of materials that are compatible with magnetic resonance to avoid interference from magnetic fields and to meet the requirements for normal operation in a magnetic resonance environment.

[0056] In practical applications, this test cell is filled with copper sulfate solution as the ambient liquid, allowing for the quantitative testing of image artifacts under magnetic resonance conditions, thus ensuring the production of effective artifact evaluation data. By fixing the position of sample two 302 and adjusting the three-axis spatial position of sample one 205, the spatial position of sample one 205 (moving sample) relative to sample two 302 (fixed sample) can be adjusted, thereby enabling comparative testing of samples at different distances. This provides operational functionality for magnetic resonance material artifact evaluation experiments. The combined design of the three-axis adjustable positioning mechanism 200 and the measurement unit 206 enables the acquisition of precise positioning coordinates of the sample and the implementation of precise adjustments to ensure its accuracy and observability in space.

[0057] This test pool features a modular structure, allowing for quick assembly and disassembly. It is easy to carry, operate, and maintain, and can adapt to the needs of rapid on-site assembly and disassembly. It can be applied to a variety of experimental testing needs, helping experimental workers improve the efficiency of experimental operations.

[0058] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A test cell for quantifying artifacts in a magnetic resonance environment, characterized in that, It includes a test pool body (100), an adjustable positioning mechanism (200), and a fixing mechanism (300); The adjustable positioning mechanism (200) is a multi-axis adjustment mechanism, which is slidably mounted on the side wall of the test pool body (100). One end of the adjustable positioning mechanism (200) that extends into the test pool body (100) is fitted with sample one (205), and the spatial position of sample one (205) in the test pool body (100) is adjusted by the adjustable positioning mechanism (200). The fixing mechanism (300) is fixedly assembled on the inner bottom surface of the test pool body (100), and sample two (302) is installed on the fixing mechanism (300).

2. The test cell for artifact quantification measurement in a magnetic resonance environment according to claim 1, characterized in that, The test pool body (100) is a visible test pool.

3. The test cell for artifact quantification measurement in a magnetic resonance environment according to claim 1, characterized in that, The adjustable positioning mechanism (200) is a three-axis adjustment mechanism, which includes an X-axis slider (201), a Y-axis slider (202), and a Z-axis slider (203). The X-axis slider (201) is slidably mounted between a pair of sidewalls of the test pool body (100); The Y-axis slider (202) is slidably mounted on the X-axis slider (201); The Z-axis slider (203) is slidably mounted on the Y-axis slider (202).

4. The test cell for artifact quantification measurement in a magnetic resonance environment according to claim 3, characterized in that, The X-axis slider (201) has slots (2011) at both ends, and the X-axis slider (201) is slidably assembled with the side wall of the test pool body (100) through the slots (2011).

5. The test cell for artifact quantification measurement in a magnetic resonance environment according to claim 3, characterized in that, The top end of the Y-axis slider (202) is provided with a bent part, and the Y-axis slider (202) is slidably assembled with the X-axis slider (201) through the bent part; The bent portion is provided with a pin hole, and a sliding limiting structure surrounding the X-axis slider (201) is formed by inserting the pin block (208) into the pin hole.

6. The test cell for artifact quantification measurement in a magnetic resonance environment according to claim 3, characterized in that, The Z-axis slider (203) includes a groove (2032) and a buckle (2033). The Z-axis slider (203) is slidably assembled with the Y-axis slider (202) through the groove (2032). The sample one (205) is installed in the buckle (2033).

7. The test cell for artifact quantification measurement in a magnetic resonance environment according to claim 6, characterized in that, The buckle (2033) is provided with an adjustment connection hole (207). The sample 1 (205) is tightened in the buckle (2033) by setting an adjustment connector in the adjustment connection hole (207).

8. The test cell for artifact quantification measurement in a magnetic resonance environment according to claim 3, characterized in that, Includes one or both of the following: i) The X-axis slider (201), Y-axis slider (202) and Z-axis slider (203) are respectively provided with handle connectors (204) for abutment positioning; ii) The test pool body (100), the X-axis slider (201) and the Y-axis slider (202) are respectively provided with a measurement unit (206) for reading the position data of the X-axis slider (201), the Y-axis slider (202) and the Z-axis slider (203).

9. A test cell for artifact quantification measurement in a magnetic resonance environment according to claim 1, characterized in that, The fixing mechanism (300) includes a base (301), the base (301) is provided with a support groove (3012) and a mounting hole (3013), the second sample (302) is installed in the support groove (3012), and the base (301) is fixed to the inner bottom surface of the test pool body (100) by a mounting member provided in the mounting hole (3013).

10. A test cell for artifact quantification measurement in a magnetic resonance environment according to claim 9, characterized in that, The support groove (3012) is provided with binding holes (3011) at both ends, and the sample two (302) is limited to the support groove (3012) by the binding member passing through the binding hole (3011).

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