Measurement system for MRgHIFU

Abstract

The utility model relates to a measuring system for MRgHIFU. The measuring system comprises a measuring device, a cooling device, a detecting device and an ultrasonic probe, wherein the measuring device comprises a fixing assembly and a lifting adjusting assembly, and the fixing assembly is connected with the ultrasonic probe; the cooling device is connected with the fixing assembly; the detection device is connected with the lifting adjusting assembly. Compared with the prior art, the utility model can realize the functions of being compatible with ultrasonic transducers of different types and focal lengths, providing a cooling test environment, carrying out the precision test of the energy focusing focus of an ultrasonic probe and the like, and meets the building requirements of various tests and test environments in the development and test process of the magnetic resonance guided HIFU technology.

Description

Technical Field

[0001] The utility model relates to an MRgHIFU system, in particular to a measurement system for MRgHIFU. Background Art

[0002] Magnetic resonance-guided high-intensity focused ultrasound (MRgHIFU) has become a focus of increasing attention in modern medical research and practice. This technology cleverly combines the advantages of magnetic resonance imaging (MRI) and high-intensity focused ultrasound (HIFU), offering patients a non-invasive, environmentally friendly (non-ionizing radiation), and reusable treatment option. As more and more clinicians recognize the tremendous potential of MRgHIFU in therapeutic settings, its applications in the medical field are expanding. In particular, MRgHIFU has shown broad application prospects in tumor treatment and is considered an innovative and effective treatment option.

[0003] Currently, MRI-guided high-intensity focused ultrasound (HIFU) testing requires a variety of specialized test fixtures and corresponding test environments. For example, these tests include testing the accuracy of ultrasound probe energy focus and the signal-to-noise ratio of ex vivo tissue cross-sections. Ultrasonic transducers also vary in shape and focal length. A multifunctional, comprehensive testing device is needed that is highly compatible with different ultrasound transducers, capable of performing multiple testing functions, and provides the corresponding test environment. Summary of the Invention

[0004] The purpose of the present invention is to provide a multifunctional measurement device for MRgHIFU in order to address at least one of the aforementioned problems. This device addresses the single detection function of existing MRgHIFU technology in ex vivo tissue measurements, enables measurement of the focal position of ultrasonic transducers of different types and focal lengths, as well as the signal-to-noise ratio of different horizontal slices, while also providing a cooling test environment to meet the requirements for multiple tests and test environment construction during the development and testing of MRI-guided HIFU technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The utility model discloses a measurement system for MRgHIFU, comprising:

[0007] Measuring devices, cooling devices, detection devices and ultrasonic probes;

[0008] The measuring device includes a fixing component and a lifting and adjusting component, and the fixing component is connected to the ultrasonic probe;

[0009] The cooling device is connected to the fixing assembly;

[0010] The detection device is connected to the lifting and adjusting component.

[0011] The measuring device can raise and lower the detection device through the lifting and adjusting component to measure the spatial position of the ultrasound focus point; and compare it with the corresponding benchmark to measure the focusing accuracy of the ultrasound probe; at the same time, in the same way, the signal-to-noise ratio of horizontal sections at different height positions when the ultrasound probe focuses energy on the ex vivo tissue can be detected; thereby realizing the focus position measurement, focusing accuracy measurement and signal-to-noise ratio measurement of different horizontal sections using ultrasound probes of different types and focal lengths.

[0012] Preferably, the fixing assembly is further connected to a sealed circular tube as a test cavity;

[0013] The ultrasonic probe is arranged in the test cavity;

[0014] The cooling device is used to cool the test environment in the test cavity;

[0015] The lifting adjustment component is used to adjust the longitudinal position of the detection device relative to the ultrasonic probe.

[0016] The sealed circular tube that serves as the test chamber accommodates and adapts to the ultrasonic probe's energy range, ensuring that the focused energy is within the measurable range. Focused ultrasound also generates significant heat, and the test system uses a cooling device to continuously cool the test environment, maintaining a temperature within a specified range.

[0017] Preferably, the fixing assembly comprises a connecting post, the connecting post being arranged longitudinally and provided with a longitudinal scale;

[0018] The lifting and adjusting assembly includes a movable plate, a lifting mechanism, and a locking and fixing mechanism;

[0019] The movable plate is used to carry the detection device, the lifting mechanism is used to adjust the longitudinal position of the movable plate, and the locking and fixing mechanism is used to fixedly connect the movable plate and the connecting column.

[0020] The longitudinal position of the movable plate is adjusted by the lifting mechanism, and the movable plate is fixed to the connecting column by the locking and fixing mechanism, thereby realizing the adjustment and fixation of the longitudinal height of the detection device, and the longitudinal height of the detection device is calibrated by the longitudinal scale, thereby realizing the precise adjustment of the longitudinal height of the detection device, and further realizing the accurate measurement of the focusing accuracy.

[0021] Further preferably, the connecting posts are provided in a plurality and are symmetrically and evenly spaced to enhance the stability and reliability of the movable plate, while also improving the levelness of the movable plate. Furthermore, the plurality of symmetrically and evenly spaced connecting posts are each provided with scales to facilitate readings at different orientations. The levelness of the movable plate can be adjusted by adjusting the position of the scales on each connecting post.

[0022] Preferably, the lifting mechanism includes a driving member, a transmission screw and a transmission nut assembly;

[0023] The driving member is used to drive the transmission screw to rotate longitudinally;

[0024] The transmission nut assembly is threadedly connected to the transmission screw and undergoes longitudinal displacement as the transmission screw rotates;

[0025] The movable plate is fixedly connected to the transmission nut assembly.

[0026] The transmission screw and the transmission nut assembly form a screw-nut structure, which converts the rotational motion of the driving member into the longitudinal linear motion of the transmission nut assembly to meet the longitudinal displacement of the movable plate; the use of the screw-nut structure for transmission has the advantages of accurate transmission ratio, high efficiency, compact structure, and long service life, making the adjustment of the movable plate more precise, meeting the needs of fine-tuning, more flexible adjustment, and wide applicability.

[0027] Preferably, the locking and fixing mechanism includes a sliding flange and a locking knob;

[0028] The sliding flange is sleeved on the connecting column and has a threaded hole running through the side wall;

[0029] The locking knob is screwed to the threaded hole and can pass through the threaded hole to abut against the connecting column to fix the longitudinal position of the movable plate.

[0030] The locking knob is screwed in the positive direction of the threaded hole to increase the abutment pressure between the inner end of the locking knob and the connecting column, thereby increasing the friction force between the inner end and the connecting column to resist longitudinal slippage, so that the movable plate is stabilized in the set longitudinal position.

[0031] Preferably, the detection device includes a detector and a fixing fixture;

[0032] The fixing fixture is used to adjust the lateral position of the detector relative to the test cavity and fix the detector on the movable plate.

[0033] Preferably, the detector comprises a detection portion and a connecting portion;

[0034] The fixing fixture includes a fixing support, a first clamping component and a second clamping component;

[0035] The fixed support is fixedly connected to the movable plate;

[0036] The first clamping assembly includes a first fixed plate, a first pressing block, and a first screw-in knob; the second clamping assembly includes a second fixed plate, a second pressing block, and a second screw-in knob;

[0037] The first fixing plate and the second fixing plate are arranged opposite to each other on both sides of the connecting portion and fixed on the fixing support;

[0038] The first fixing plate and the second fixing plate are respectively provided with threaded holes;

[0039] The first screw-in knob and the second screw-in knob are respectively screwed into the corresponding threaded holes, and are connected to the corresponding first pressing block or second pressing block through the threaded holes;

[0040] By rotating the first screw-in knob and the second screw-in knob in a forward or reverse direction, the first pressing block and the second pressing block are moved closer to or away from each other, so as to clamp or release the connecting portion.

[0041] The fixing fixture can be manually adjusted and has a contoured design, which can better fit and clamp the detector, thereby improving the stability and reliability of the clamping and facilitating the disassembly and assembly of the detector.

[0042] Preferably, the cooling device comprises a fixing bracket, a cooling pipeline, and a tissue bracket;

[0043] The fixing bracket is used to fix the cooling pipeline on the inner wall of the test cavity;

[0044] The cooling pipeline is arranged in a vertically winding manner;

[0045] The tissue support is used to support the tissue to be measured and adjust the longitudinal position of the tissue to be measured relative to the ultrasound probe.

[0046] Preferably, the cooling pipeline includes a plurality of vertical pipes, a plurality of first bent pipes, a plurality of second bent pipes, and a water inlet pipe and a water outlet pipe;

[0047] A plurality of vertical pipes are arranged in parallel, each of the vertical pipes comprising a first port and a second port;

[0048] The first curved pipe is connected to the first end of the adjacent vertical pipe, and the second curved pipe is connected to the second end of the adjacent vertical pipe to form a vertical meandering structure;

[0049] The water inlet pipe is connected to the first port or the second port of the first vertical pipe, and the water outlet pipe is correspondingly connected to the first port or the second port of the last vertical pipe.

[0050] The cooling pipeline adopts an S-shaped arrangement, and the overall pipeline layout is a loop-shaped pipeline. The solution and the ex vivo tissue in the sealed circular tube can be efficiently cooled by circulating the cooling medium.

[0051] Preferably, the fixing bracket comprises a vertically arranged support column;

[0052] The tissue support comprises a chassis and a vertical movable fixing mechanism;

[0053] The chassis is used to carry the tissue to be tested and can be movably arranged on the support column;

[0054] The vertical movable fixing mechanism is used to fix the chassis on the supporting column.

[0055] Further preferably, the chassis has uniformly distributed geometric through holes to facilitate the installation and fixation of ex vivo tissues or other components.

[0056] Preferably, the chassis is provided with a through hole, and the chassis is slidably mounted on the support column through the through hole.

[0057] Preferably, the vertical movable fixing mechanism includes a locking nut and a fastening screw. The locking nut is fixed on the chassis and slidably sleeved on the support column. The fastening screw is threaded onto the locking nut and can pass through the locking nut and abut against the support column, thereby fixing the chassis to the support column through the locking nut.

[0058] The locking nut is screwed in the forward direction to increase the abutment pressure between the inner end of the locking nut and the support column, thereby increasing the friction between the inner end and the support column to resist longitudinal slippage, so that the chassis is stabilized in the set longitudinal position.

[0059] Preferably, the measuring system is made of non-magnetic material.

[0060] The materials used in the measurement system are all non-magnetic materials, and the motor is a non-magnetic motor, which is perfectly compatible with magnetic resonance. The working process will not be affected by magnetic resonance and can work in a strong magnetic field.

[0061] Working principle:

[0062] This utility model can simulate the clinical treatment process of high-intensity focused ultrasound guided by magnetic resonance and can be used for pre-clinical trials before clinical treatment. By adjusting the distance between the detection device and the ultrasound probe through the fixed component and the lifting and adjusting component in the measurement device, it is possible to measure the focus position and focusing accuracy of ultrasound probes of different types and focal lengths, as well as the signal-to-noise ratio of different horizontal sections. The cooling device continuously cools the test environment to ensure that the test environment temperature is within a certain range.

[0063] Compared with the prior art, the present invention has the following beneficial effects:

[0064] This utility model provides a multifunctional measurement device for MRgHIFU. It is compatible with ultrasonic transducers of varying types and focal lengths, provides a cooling testing environment, and enables precision testing of the ultrasound probe's energy focus. This device meets the diverse testing requirements and test environment requirements during the development and testing of MRI-guided HIFU technology. By overcoming these technical challenges, this device will provide patients with safer, more efficient, and more reliable treatment options, contributing to the advancement of modern medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 A schematic diagram of the structure of the measuring device from one perspective;

[0066] Figure 2 A longitudinal cross-sectional view of the measuring device from one perspective;

[0067] Figure 3 A longitudinal sectional view of the measuring device from another perspective;

[0068] Figure 4 A schematic diagram of the structure of the measuring device from another perspective (without the cover);

[0069] Figure 5 It is a structural schematic diagram of the cooling device;

[0070] Figure 6 It is a structural diagram of the cooling pipeline;

[0071] Figure 7 Schematic diagram of the assembly of the fixing fixture and the detector;

[0072] Description of the marks in the figure:

[0073] 100- measuring device;

[0074] 110-base plate; 120-movable plate; 130-cover plate; 140-sealing tube; 150-support foot; 151-support flange; 152-support column; 160-connecting column; 161-upper fixed flange; 162-scale column; 163-lower fixed flange; 170-locking and fixing mechanism; 171-locking knob; 172-sliding flange; 180-lifting adjustment assembly; 181-driving element; 182-upper bearing end cover; 183-lower bearing end cover; 184-first bearing; 185-drive screw; 186-upper drive flange nut; 187-lower drive flange nut; 188-second bearing; 189-flange base;

[0075] 200-cooling device;

[0076] 210 - first water-cooling chassis; 220 - second water-cooling chassis; 230 - bottom support column; 240 - third water-cooling chassis; 250 - tissue support; 251 - chassis; 252 - locking nut; 253 - fastening screw; 260 - cooling pipe; 261 - second elbow; 262 - vertical pipe; 263 - first elbow; 264 - water inlet pipe; 265 - water outlet pipe;

[0077] 300-fixing fixture;

[0078] 310 - fixed support; 320 - first pressing block; 330 - second pressing block; 340 - second screw-in knob; 350 - first screw-in knob;

[0079] 400-detector;

[0080] 500-Ultrasound probe. DETAILED DESCRIPTION

[0081] The following embodiments are implemented based on the above technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0082] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0083] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0084] Example

[0085] A measurement system for MRgHIFU, such as Figures 1 to 7 As shown, it is used to achieve focus position measurement, focus accuracy measurement, and signal-to-noise ratio measurement of different horizontal slices using ultrasound probes 500 of different types and focal lengths; and continuously cool the test environment to ensure that the test environment temperature is within a certain range, including a measuring device 100, a cooling device 200, a detection device, and an ultrasound probe 500;

[0086] The measuring device 100 includes a fixing component and a lifting and lowering adjustment component 180 , wherein the fixing component is connected to the ultrasonic probe 500 ;

[0087] The cooling device 200 is connected to the fixing assembly;

[0088] The detection device is connected to the lifting and adjusting component 180 .

[0089] in,

[0090] Figure 1 、 Figure 2 、 Figure 3 The overall structure of the measurement system is shown, specifically: a lift adjustment assembly 180 is mounted on a fixed assembly for longitudinal elevation, a cooling device 200 is installed within the fixed assembly, an ultrasonic probe 500, also serving as an ultrasonic transducer, is mounted at the bottom, and a detection device is mounted on the lift adjustment assembly 180. The detection device is adjusted by the lift adjustment assembly 180 to measure the spatial position of the ultrasound focus point; this is then compared with a corresponding reference to measure the focusing accuracy of the ultrasound probe 500. Simultaneously, using the same method, the signal-to-noise ratio of horizontal slices at different heights when the ultrasound probe 500 focuses energy on ex vivo tissue can be measured. This allows for measurement of focus position, focusing accuracy, and signal-to-noise ratio of different horizontal slices using ultrasound probes 500 of different types and focal lengths.

[0091] like Figure 2 As shown, the fixed assembly is connected to a sealed circular tube 140, specifically an acrylic tube, which serves as the test cavity. This sealed circular tube 140 accommodates and adapts to the ultrasonic probe's energy range, ensuring that the focused energy is within the measurable range. The ultrasonic probe 500 is located at the bottom of the test cavity; the cooling device 200 is mounted on the inner wall of the test cavity; the lift adjustment assembly 180 raises and lowers the test cavity's longitudinal height; and the detection device is located outside the test cavity.

[0092] The main body of the fixed assembly is a cylindrical structure, consisting of a base plate 110, a cover plate 130, a connecting column 160, and a support leg 150. The base plate 110 and the cover plate 130 are acrylic plate structures, arranged side by side in the longitudinal direction. There are multiple connecting columns 160, which are arranged circumferentially between the base plate 110 and the cover plate 130. The connecting columns 160 further include an upper fixing flange 161, a scale column 162, and a lower fixing flange 163. The scale column 162 is provided with a longitudinal scale, and its ends are fixedly connected to the cover plate 130 and the base plate 110 via the upper fixing flange 161 and the lower fixing flange 163 respectively. There are multiple support legs 150, including a support flange 151 and a support column 152. The support column 152 is fixed to the bottom of the base plate 110 via the support flange 151.

[0093] The lifting and adjusting assembly 180 is used to adjust the longitudinal position of the detection device relative to the ultrasonic probe 500. The main body comprises a movable plate 120, a lifting mechanism, and a locking and fixing mechanism 170. The detection device is mounted on the movable plate 120, and the lifting mechanism is mounted between the base plate 110 and the cover plate 130. It is used to drive the movable plate 120 up and down in the longitudinal direction. The assembly comprises a driving member 181, a transmission screw 185, and a transmission nut assembly. The driving member 181 is a transmission knob fixed to the top of the transmission screw 185, which can be fixed by bolts. The transmission screw 185 is vertically arranged between the base plate 110 and the cover plate 130. The transmission nut assembly comprises an upper transmission flange nut 186 and a lower transmission flange nut 187. The upper and lower transmission flange nuts 186 and 187 are respectively fixed to the upper and lower sides of the movable plate 120 and are screwed to the transmission screw 185. The transmission knob drives the drive screw 185 to rotate, and the upper and lower transmission flange nuts 186 and 187 convert the rotational force into linear displacement, driving the movable plate 120 to rise and fall longitudinally along the drive screw 185. To reduce the rotational resistance of the drive screw 185, the cover plate 130 and the base plate 110 are respectively provided with an upper bearing assembly and a lower bearing assembly. The cover plate 130 is provided with a through hole for the top of the drive screw 185 to pass through. The upper bearing assembly includes a first bearing 184, an upper bearing end cap 182, and a lower bearing end cap 183. The first bearing 184 is embedded in the through hole of the cover plate 130 and is mounted on the top of the drive screw 185. The upper and lower bearing end caps 182 and 183 are fixedly mounted on the upper and lower sides of the cover plate 130, respectively, and clamp and secure the first bearing 184. The lower bearing assembly includes a flange base 189 and a second bearing 188. The second bearing 188 is sleeved on the bottom of the transmission screw 185 and mounted on the base plate 110 through the flange base 189. The first bearing 184 and the second bearing 188 are made of ceramic material. The locking and fixing mechanism 170 is used to fix the movable plate 120 to the connecting column 160 and includes a sliding flange 172 and a locking knob 171. The sliding flange 172 is installed on the movable plate 120 and sleeved on the connecting column 160, and a threaded hole is opened through the side wall; the locking knob 171 is screwed into the threaded hole and can pass through the threaded hole to abut against the connecting column 160 to fix the longitudinal position of the movable plate 120. By turning locking knob 171 in the forward direction of the threaded hole to increase the abutment pressure between the inner end of locking knob 171 and connecting post 160, the friction force between the inner end and connecting post 160 against longitudinal slippage is increased, thereby stabilizing movable plate 120 in the set longitudinal position. The longitudinal position of movable plate 120 is adjusted by the lifting mechanism, and movable plate 120 is fixed to connecting post 160 by locking and fixing mechanism 170, thereby achieving adjustment and fixation of the longitudinal height of the detection device. The longitudinal height of the detection device is calibrated by the longitudinal scale, thereby achieving precise adjustment of the longitudinal height of the detection device and accurate measurement of focusing accuracy.

[0094] To enhance the stability and reliability of the movable plate 120, multiple connecting posts 160 are provided, symmetrically and evenly spaced. This arrangement also improves the levelness of the movable plate 120. Furthermore, each of the symmetrically spaced connecting posts 160 has scales, facilitating readings at different orientations. The levelness of the movable plate 120 can be adjusted by adjusting the position of the scales on each connecting post 160.

[0095] The detection device includes a detector 400 and a fixing fixture 300. Figure 4 and Figure 7 As shown, the detector 400 comprises a detection portion and a connection portion. Specifically, the detection portion is annularly sleeved outside the sealed circular tube 140 and is used to determine the spatial position of the ultrasonic transducer's ultrasound focus and the signal-to-noise ratio of horizontal sections at different heights when the focused energy is applied to ex vivo tissue. The connection portion extends laterally and is secured to the movable plate 120 via a fixing fixture 300. The lateral extension position of the detection portion is controlled by adjusting the lateral connection position of the fixing fixture 300 on the connection portion. The fixing fixture 300 includes a fixing support 310, and a first clamping assembly and a second clamping assembly; the fixing support 310 is fixedly connected to the movable plate 120; the first clamping assembly includes a first fixing plate, a first pressure block 320, and a first screw-in knob 350, and the second clamping assembly includes a second fixing plate, a second pressure block 330, and a second screw-in knob 340; the first fixing plate and the second fixing plate are arranged opposite to each other on both sides of the connecting portion and are fixed to the fixing support 310; threaded holes are respectively formed on the first fixing plate and the second fixing plate; the first screw-in knob 350 and the second screw-in knob 340 are respectively screwed into the corresponding threaded holes, and are connected to the corresponding first pressure block 320 or the second pressure block 330 through the threaded holes; by rotating the first screw-in knob 350 and the second screw-in knob 340 forward or reversely, the first pressure block 320 and the second pressure block 330 are moved closer or farther away to clamp or release the connecting portion. The fixing fixture 300 can be manually adjusted and has a contoured design, which can better fit and clamp the detector 400, thereby improving the stability and reliability of the clamping and making the detector 400 easier to assemble and disassemble.

[0096] The cooling device 200 is used to support the tissue to be tested and adjust the longitudinal position of the tissue to be tested relative to the ultrasonic probe 500, such as Figure 5 As shown, it includes a fixing bracket, a cooling pipe 260, and a tissue bracket 250. The fixing bracket is a cylindrical structure, which is installed on the inner wall of the sealed circular tube 140 and includes a first water-cooling chassis 210, a second water-cooling chassis 220, and a third water-cooling chassis 240 arranged in parallel in the longitudinal direction, as well as a bottom support column 230 that supports and connects the first water-cooling chassis 210 and the second water-cooling chassis 220, and the second water-cooling chassis 220 and the third water-cooling chassis 240. Figure 6As shown, the cooling pipe 260 is vertically serpentine and arranged between the first water-cooled chassis 210, the second water-cooled chassis 220, and the third water-cooled chassis 240. Specifically, the cooling pipe 260 includes multiple vertical pipes 262, multiple first bends 263, multiple second bends 261, as well as an inlet pipe 264 and an outlet pipe 265. The vertical pipe 262 is vertically arranged between the second water-cooled chassis 220 and the third water-cooled chassis 240, and extends out at both ends. One end is connected in sequence through the first bend 263, and the other end is connected in sequence through the second bend 261, forming a vertically serpentine coil. The cooling pipe 260 adopts an S-shaped arrangement, and the overall pipeline layout is a loop-shaped loop. The circulating cooling medium can efficiently cool the solution and ex vivo tissue in the sealed circular tube 140, ensuring that the test environment temperature is within a certain range. The head end of the serpentine coil is connected to the water inlet pipe 264, and the tail end is connected to the water outlet pipe 265. The coil is connected to an external cooling water circulation device through the water inlet pipe 264 and the water outlet pipe 265. The tissue holder 250 includes a chassis 251 and a vertical movable fixing mechanism. The chassis 251 is used to support the ex vivo tissue to be tested and is evenly distributed with multiple geometric through-holes to facilitate the installation and fixation of the ex vivo tissue or other components. It also has multiple sliding through-holes, through which the chassis 251 is slidably mounted on the bottom support column 230 and the vertical tube 262. The vertical movable fixing mechanism is used to secure the chassis 251 to the support column and includes a locking nut 252 and a fastening screw 253. The locking nut 252 is fixed to the chassis 251 and slidably sleeved on the support column. The fastening screw 253 is threaded onto the locking nut 252 and can pass through the locking nut 252 to abut the support column, thereby fixing the chassis 251 to the support column via the locking nut 252. By tightening the locking nut 252 in the forward direction, the abutment pressure between the inner end of the locking nut 252 and the support column is increased, thereby increasing the friction between the inner end and the support column to resist longitudinal slippage, thereby stabilizing the chassis 251 in the set longitudinal position.

[0097] The measuring system is made of non-magnetic materials, such as ceramic tubes, alumina, acrylic plates, carbon fiber tubes, polyformaldehyde and other non-magnetic materials, to reduce the influence of magnetic fields on it, so as to be compatible with magnetic resonance. The working process will not be affected by magnetic resonance and can work in strong magnetic fields.

[0098] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.

Claims

1. A measurement system for MRgHIFU, characterized in that: include A measuring device (100), a cooling device (200), a detection device, and an ultrasonic probe (500); The measuring device (100) comprises a fixing component and a lifting and lowering adjustment component (180), wherein the fixing component is connected to the ultrasonic probe (500); The cooling device (200) is connected to the fixing assembly; The detection device is connected to the lifting and adjusting component (180).

2. The measurement system for MRgHIFU according to claim 1, characterized in that: The fixing assembly is also connected to a sealed circular tube (140) to serve as a test cavity; The ultrasonic probe (500) is arranged in the test cavity; The cooling device (200) is used to cool the test environment in the test cavity; The lifting adjustment component (180) is used to adjust the longitudinal position of the detection device relative to the ultrasonic probe (500).

3. The measurement system for MRgHIFU according to claim 1, characterized in that: The fixing assembly comprises a connecting post (160), the connecting post (160) being arranged longitudinally and provided with a longitudinal scale; The lifting and adjusting assembly (180) comprises a movable plate (120), a lifting mechanism, and a locking and fixing mechanism (170); The movable plate (120) is used to carry the detection device, the lifting mechanism is used to adjust the longitudinal position of the movable plate (120), and the locking and fixing mechanism (170) is used to fixedly connect the movable plate (120) and the connecting column (160).

4. The measurement system for MRgHIFU according to claim 3, characterized in that: The lifting mechanism comprises a driving member (181), a transmission screw (185), and a transmission nut assembly; The driving member (181) is used to drive the transmission screw (185) to rotate longitudinally; The transmission nut assembly is threaded onto the transmission screw (185) and undergoes longitudinal displacement as the transmission screw (185) rotates; The moving plate (120) is fixedly connected to the transmission nut assembly.

5. The measurement system for MRgHIFU according to claim 3, characterized in that: The locking and fixing mechanism (170) includes a sliding flange (172) and a locking knob (171); The sliding flange (172) is sleeved on the connecting column (160) and has a threaded hole extending through the side wall; The locking knob (171) is screwed to the threaded hole and can pass through the threaded hole to abut against the connecting column (160) to fix the longitudinal position of the movable plate (120).

6. The measurement system for MRgHIFU according to claim 1, characterized in that: The detection device comprises a detector (400) and a fixing fixture (300); The fixing fixture (300) is used to adjust the lateral position of the detector (400) relative to the test cavity, and to fix the detector (400) on the movable plate (120).

7. The measurement system for MRgHIFU according to claim 6, characterized in that: The detector (400) comprises a detection portion and a connection portion; The fixing fixture (300) comprises a fixing support (310), a first clamping component and a second clamping component; The fixed support (310) is fixedly connected to the movable plate (120); The first clamping assembly comprises a first fixed plate, a first pressing block (320), and a first screw-in knob (350); the second clamping assembly comprises a second fixed plate, a second pressing block (330), and a second screw-in knob (340); The first fixing plate and the second fixing plate are arranged opposite to each other on both sides of the connecting portion and are fixed on the fixing support (310); The first fixing plate and the second fixing plate are respectively provided with threaded holes; The first screw-in knob (350) and the second screw-in knob (340) are respectively screwed into corresponding threaded holes, and are connected to the corresponding first pressing block (320) or the second pressing block (330) through the threaded holes; By rotating the first screw-in knob (350) and the second screw-in knob (340) in a forward or reverse direction, the first pressing block (320) and the second pressing block (330) are moved closer to or farther away from each other, thereby clamping or releasing the connection portion.

8. The measurement system for MRgHIFU according to claim 2, characterized in that: The cooling device (200) comprises a fixing bracket, a cooling pipeline (260), and a tissue bracket (250); The fixing bracket is used to fix the cooling pipeline (260) on the inner wall of the test cavity; The cooling pipeline (260) is arranged in a vertically winding manner; The tissue support (250) is used to support the tissue to be tested and to adjust the longitudinal position of the tissue to be tested relative to the ultrasonic probe (500).

9. The measurement system for MRgHIFU according to claim 8, characterized in that: The cooling pipeline (260) includes a plurality of vertical pipes (262), a plurality of first curved pipes (263), a plurality of second curved pipes (261), a water inlet pipe (264), and a water outlet pipe (265); A plurality of vertical tubes (262) are arranged in parallel, and the vertical tubes (262) include a first port and a second port; The first curved pipe (263) is connected to the first port of the adjacent vertical pipe (262), and the second curved pipe (261) is connected to the second port of the adjacent vertical pipe (262), so as to form a vertical meandering structure; The water inlet pipe (264) is connected to the first port or the second port of the first vertical pipe (262), and the water outlet pipe (265) is correspondingly connected to the first port or the second port of the last vertical pipe (262); and / or, The fixing bracket includes a vertically arranged support column; The tissue support (250) comprises a base plate (251) and a vertical movable fixing mechanism; The chassis (251) is used to carry the tissue to be tested and is movably arranged on the support column; The vertical movable fixing mechanism is used to fix the chassis (251) on the supporting column.

10. The measurement system for MRgHIFU according to claim 9, characterized in that: The chassis (251) is provided with a through hole, and the chassis (251) is slidably sleeved on the support column through the through hole; and / or, The vertical movable fixing mechanism includes a locking nut (252) and a fastening screw (253), wherein the locking nut (252) is fixed on the chassis (251) and slidably sleeved on the support column, and the fastening screw (253) is screwed onto the locking nut (252) and can pass through the locking nut (252) to abut against the support column, thereby fixing the chassis (251) to the support column through the locking nut (252).

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