Multimodal imaging method and device based on ultrasonic and MRI fusion

Abstract

The invention relates to the technical field of medical imaging, and discloses a multi-modal imaging method and device based on ultrasound and MRI fusion, and the device comprises a machine body, the bottom of the inner side of the machine body is fixedly connected with a hollow block, the inner side of the hollow block is provided with a control mechanism, and the control mechanism comprises a transmission rod. The two transmission rods are rotationally connected to the left side and the right side of the interior of the hollow block correspondingly, a horizontal gear is fixedly connected to the middle of the outer side of each transmission rod, a gear ring is rotationally connected to the top of each horizontal gear, the bottom of each gear ring penetrates through the hollow block and is in meshed connection with the corresponding horizontal gear, and a threaded sleeve is fixedly connected to the bottom of the front side of the hollow block. A driving motor drives a right transmission rod to rotate, and through transmission of a belt wheel and a transmission belt, horizontal gears on the two sides rotate at the same time, so that a gear ring is driven to rotate, an ultrasonic detection gun is driven to move left and right, the ultrasonic detection gun moves along with a patient, and unclear imaging caused by movement of the patient is avoided.

Description

Technical Field

[0001] The present invention relates to the field of medical imaging technology, and in particular to a multimodal imaging method and device based on the fusion of ultrasound and MRI. Background Art

[0002] Ultrasound and MRI are commonly used imaging examination technologies in the medical field, playing an important role in disease diagnosis and health assessment. Ultrasound uses the reflection principle of high-frequency sound waves to generate real-time dynamic images. It is radiation-free and low-cost, while MRI is based on the resonance phenomenon of human hydrogen nuclei in a strong magnetic field and has extremely high soft tissue resolution.

[0003] With the continuous advancement of modern medicine, although ultrasound can provide real-time dynamic imaging, its deep tissue resolution is low and it is greatly interfered by bone gas. Although MRI has the advantages of high soft tissue resolution and functional imaging, it is time-consuming, sensitive to motion artifacts and has metal contraindications. At this time, multimodal imaging that integrates ultrasound and MRI is needed to achieve a more accurate and convenient detection method.

[0004] Currently, multimodal imaging devices that integrate ultrasound and MRI on the market mainly consist of an ultrasound probe, a host computer, an MRI imaging module, and an image fusion processing unit. During use, the patient is examined separately using the ultrasound probe and the MRI imaging module, and the image fusion processing unit integrates the examination results so that the doctor can simultaneously observe information from both images. However, when the device is in use, the ultrasound probe is interfered with by the strong magnetic field of the MRI, resulting in image distortion and artifacts. The existing technology uses piezoelectric materials without metal components and optical fiber to transmit signals to isolate electromagnetic interference. However, in actual use, due to the narrow internal space of the MRI scanner, the ultrasound probe is difficult to adapt, affecting the flexibility of synchronous imaging. To address the above problems, the existing technology often adopts a modular ultrasound probe design to reduce the size of the ultrasound probe and thus improve space utilization. However, when the ultrasound probe is imaging, the patient's breathing, movement, or body position changes can cause the ultrasound and MRI images to be misaligned, resulting in unclear imaging results. It is also not conducive to adjusting the position of the ultrasound test, reducing the practicality of the device and failing to meet the needs of users. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a multimodal imaging method and device based on ultrasound and MRI fusion, which solves the problem of misalignment of ultrasound and MRI images caused by patient breathing or movement during imaging in multimodal imaging devices based on ultrasound and MRI fusion.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multimodal imaging device based on ultrasound and MRI fusion, comprising a body, a hollow block fixedly connected to the inner bottom of the body, a control mechanism provided on the inner side of the hollow block, the control mechanism being used to facilitate ultrasonic testing of different parts of a patient, a moving mechanism provided on the top, the moving mechanism being used to improve the stability of ultrasonic testing, and an auxiliary mechanism provided on the front side of the body, the auxiliary mechanism being used to facilitate testing of the patient;

[0007] The control mechanism includes a transmission rod, and the two transmission rods are rotatably connected to the left and right sides of the interior of the hollow block respectively. The middle part of the outer side of the transmission rod is fixedly connected to a flat gear, and the top of the flat gear is rotatably connected to a gear ring. The bottom of the gear ring passes through the hollow block and is meshed with the flat gear. The front bottom of the hollow block is fixedly connected to a threaded sleeve, and the rear end of the threaded sleeve passes through the hollow block. The inner bottom of the body is rotatably connected to a threaded column, and the threaded column is threadedly connected to the threaded sleeve. The rear end of the threaded column passes through the body, and a transmission assembly is provided on the front side of the interior of the hollow block.

[0008] Preferably, the moving mechanism includes a bidirectional threaded rod, which is rotatably connected to the middle and lower part of the inner side of the gear ring, and the left and right sides of the outer wall of the bidirectional threaded rod are threadedly connected to sliders, the top of the slider is rotatably connected to a connecting rod, and the top of the connecting rod is rotatably connected to a connecting seat, the top of the connecting seat is fixedly connected to a support plate, and the top of the support plate is fixedly connected to an ultrasonic detection gun, a driving assembly is provided in the middle of the inner bottom end of the moving mechanism, and guide assemblies are provided on the front and rear sides of the inner bottom end of the moving mechanism.

[0009] Preferably, the auxiliary mechanism includes a base, which is arranged on the front side of the machine body, the top of the base is slidably connected to the bed board, the inner bottom of the bed board is fixedly connected to a hydraulic rod 1, the rear end of the hydraulic rod 1 is fixedly connected to a sliding seat, the top of the sliding seat is rotatably connected to a support rod, the top end of the support rod is rotatably connected to a support seat, the top rear side of the bed board is rotatably connected to a push plate, the bottom of the push plate is fixedly connected to the support seat, and a lifting assembly is provided on the lower side of the base.

[0010] Preferably, the transmission assembly includes a pulley and a transmission belt, the two pulleys are respectively rotatably connected to the outside of the corresponding transmission rod, the two pulleys are connected through the transmission belt, and a driving motor is fixedly connected to the lower middle part of the rear wall of the body, and the output end of the driving motor passes through the body and the hollow block in sequence and is fixedly connected to the right transmission rod.

[0011] Preferably, the driving assembly includes a piezoelectric ceramic motor, which is fixedly connected to the middle of the inner bottom end of the gear ring, and the output end of the piezoelectric ceramic motor is fixedly connected to the driving bevel gear, and the outer middle part of the bidirectional threaded rod is fixedly connected to the driven bevel gear, and the driven bevel gear is meshed with the driving bevel gear.

[0012] Preferably, the guide assembly includes a hollow cylinder, and the two hollow cylinders are fixedly connected to the front and rear sides of the inner bottom end of the gear ring respectively. The inner side of the hollow cylinder is slidably connected to a sliding rod, and the top end of the sliding rod is fixedly connected to the support plate.

[0013] Preferably, the lifting assembly includes a hollow seat, which is arranged on the lower side of the base, and the inner side of the hollow seat is slidably connected to a movable plate, and the front and rear sides of the hollow seat are fixedly connected to hydraulic rod 2, and the top of the hydraulic rod 2 is fixedly connected to the movable plate.

[0014] Preferably, the control mechanism further comprises a slide rail, wherein the two slide rails are fixedly connected to the left and right sides of the lower middle portion of the inner wall of the machine body respectively, and the outer sides of the slide rails are slidably connected to the hollow block.

[0015] Preferably, the front and rear sides of the lower middle portion of the inner wall of the gear ring are fixedly connected with guide rods, and the outer sides of the guide rods are slidably connected to the slider.

[0016] The method for using a multimodal imaging device based on ultrasound and MRI fusion includes the following steps:

[0017] S1. When using the device, the patient needs to be placed on the bed board first, and then the hydraulic rod 2 is activated. The hydraulic rod 2 will drive the movable board to move downward, and the base will drive the bed board down accordingly, so that the patient can lie on the bed board conveniently. When the patient needs to get up, the hydraulic rod 1 will pull the sliding seat forward and push the support seat to move through the support rod, thereby driving the push plate to rotate. The push plate can push the patient to sit up, making it easier for the patient to get up.

[0018] S2. When the patient lies on the bed board, the bed board is pushed so that the patient can be sent into the body. The drive motor will start, driving the right transmission rod to rotate. The transmission action of the pulley and the transmission belt can drive the left transmission rod to rotate. The transmission rods on both sides will respectively drive the flat gear to rotate, thereby driving the gear ring to rotate, so that the ultrasonic detection gun can be aimed at the patient's detection part. The ultrasonic detection gun can move with the movement of the patient, so that the ultrasonic detection gun can always be aimed at the patient's affected part;

[0019] S3. During testing, the piezoelectric ceramic motor drives the active bevel gear to rotate. Since the driven bevel gear meshes with the active bevel gear, the driven bevel gear drives the bidirectional threaded rod to rotate. The rotation of the bidirectional threaded rod drives the slider to move, and the connecting seat can be pushed to move through the connecting rod. The support plate drives the ultrasonic testing gun to move, so that the ultrasonic testing gun can be closely attached to the patient's skin, thereby improving the quality of the ultrasonic test image.

[0020] S4. By rotating the threaded column, the threaded sleeve is driven to move, and the threaded sleeve can drive the ultrasonic detection gun to move through the hollow block, so that ultrasonic detection can be performed on different parts of the patient.

[0021] The present invention provides a multimodal imaging method and device based on ultrasound and MRI fusion, which has the following beneficial effects:

[0022] 1. The present invention drives the threaded sleeve to move through the threaded column, and the hollow block drives the ultrasonic detection gun to move, so as to perform ultrasonic detection on different diseased parts of the patient. The driving motor drives the right transmission rod to rotate, and through the transmission of the pulley and the transmission belt, the flat gears on both sides rotate at the same time, thereby driving the gear ring to rotate, driving the ultrasonic detection gun to move left and right, so that the ultrasonic detection gun moves with the patient, avoiding unclear imaging due to the movement of the patient, improving the practicality of the device, and meeting the needs of users.

[0023] 2. The present invention drives the active bevel gear to rotate through a piezoelectric ceramic motor, and drives the bidirectional threaded rod to rotate through the meshing transmission of the driven bevel gear and the active bevel gear, driving the sliders on both sides to move. The sliders push the connecting seat to move through the connecting rod, and the support plate then pushes the ultrasonic detection gun to move, so that the ultrasonic detection gun fits the patient's skin, and there will be no imaging interruption, thereby improving the reliability of the device.

[0024] 3. The present invention uses hydraulic rod 1 to pull the sliding seat to move, and uses the support rod to push the support seat to move, so that the push plate can rotate, pushing the patient on the bed board to stand up, and uses hydraulic rod 2 to drive the movable plate to move downward, thereby lowering the height of the bed board, which can help patients with limited mobility to use the device and improve the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 It is a front view of the present invention;

[0027] Figure 3 It is a partial structural cross-sectional view of the present invention;

[0028] Figure 4A partial structural cross-sectional view of the control mechanism of the present invention;

[0029] Figure 5 It is a partial structural schematic diagram of the moving mechanism of the present invention;

[0030] Figure 6 for Figure 5 A magnified view of point A in the figure;

[0031] Figure 7 It is a schematic diagram of the local structure of the present invention;

[0032] Figure 8 It is a partial structural cross-sectional view of the auxiliary mechanism of the present invention.

[0033] Among them, 1. body; 2. control mechanism; 21. transmission rod; 22. flat gear; 23. gear ring; 24. threaded sleeve; 25. threaded column; 26. transmission assembly; 261. pulley; 262. transmission belt; 263. drive motor; 27. slide rail; 3. moving mechanism; 31. two-way threaded rod; 32. slider; 33. connecting rod; 34. connecting seat; 35. support plate; 36. ultrasonic detection gun; 37. drive assembly; 37 1. Piezoelectric ceramic motor; 372. Driving bevel gear; 373. Driven bevel gear; 38. Guide assembly; 381. Hollow cylinder; 382. Slide rod; 39. Guide rod; 4. Auxiliary mechanism; 41. Base; 42. Bed board; 43. Hydraulic rod 1; 44. Sliding seat; 45. Support rod; 46. Support seat; 47. Push plate; 48. Lifting assembly; 481. Hollow seat; 482. Movable plate; 483. Hydraulic rod 2; 5. Hollow block. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1:

[0036] Reference Figure 1 、 Figure 3 and Figure 4An embodiment of the present invention provides a multimodal imaging device based on ultrasound and MRI fusion, comprising a body 1, a hollow block 5 fixedly connected to the inner bottom of the body 1, a control mechanism 2 provided on the inner side of the hollow block 5, the control mechanism 2 being used to facilitate ultrasonic testing of different parts of a patient, a moving mechanism 3 provided on the top of the hollow block 5, the moving mechanism 3 being used to improve the stability of ultrasonic testing, and an auxiliary mechanism 4 provided on the front side of the body 1, the auxiliary mechanism 4 being used to facilitate testing of the patient;

[0037] The control mechanism 2 includes a transmission rod 21, and the two transmission rods 21 are rotatably connected to the left and right sides of the interior of the hollow block 5 respectively. The middle part of the outer side of the transmission rod 21 is fixedly connected to a flat gear 22. The transmission rod 21 will drive the flat gear 22 to rotate. The top of the flat gear 22 is rotatably connected to a gear ring 23. The bottom of the gear ring 23 penetrates the hollow block 5 and is meshed with the flat gear 22. When the flat gear 22 rotates, the gear ring 23 will rotate accordingly. The front bottom of the hollow block 5 is fixedly connected to a threaded sleeve 24. The rear end of the threaded sleeve 24 penetrates the hollow block 5. The inner bottom of the body 1 is rotatably connected to a threaded column 25. The threaded column 25 is threadedly connected to the threaded sleeve 24. When the threaded column 25 rotates, the threaded sleeve 24 will drive the hollow block 5 moves, the rear end of the threaded column 25 passes through the body 1, and a transmission assembly 26 is provided on the front side of the interior of the hollow block 5. The transmission assembly 26 includes a pulley 261 and a transmission belt 262. The two pulleys 261 are respectively rotatably connected to the outer sides of the corresponding transmission rods 21. The two pulleys 261 are connected for transmission through the transmission belt 262. When the right transmission rod 21 rotates, the transmission action of the pulley 261 and the transmission belt 262 can drive the left transmission rod 21 to rotate. A driving motor 263 is fixedly connected to the middle and lower part of the rear wall of the body 1. The output end of the driving motor 263 sequentially passes through the body 1 and the hollow block 5 and is fixedly connected to the right transmission rod 21. The driving motor 263 drives the right transmission rod 21 to rotate.

[0038] Specifically, when using the device, by rotating the threaded column 25, the threaded sleeve 24 is driven to move, and the hollow block 5 will drive the ultrasonic detection gun 36 to move, so that the ultrasonic detection gun 36 can perform ultrasonic detection on different diseased parts of the patient's body. At the same time, the driving motor 263 will drive the right transmission rod 21 to rotate. The right transmission rod 21 can drive the left transmission rod 21 to rotate through the transmission effect with the pulley 261 and the transmission belt 262, so that the flat gears 22 on both sides can rotate simultaneously. Since the gear ring 23 is engaged with the flat gear 22, the gear ring 23 will drive the ultrasonic detection gun 36 to move left and right, so that the ultrasonic detection gun 36 can flexibly adjust its position accordingly with the movement of the patient's body, thereby ensuring the clarity of the ultrasonic imaging and preventing blurred images, thereby improving the practicality of the device and meeting the needs of users.

[0039] Reference Figure 3、 Figure 5 and Figure 6 The movable mechanism 3 includes a bidirectional threaded rod 31, which is rotatably connected to the middle and lower part of the inner side of the gear ring 23. The left and right sides of the outer wall of the bidirectional threaded rod 31 are threadedly connected to sliders 32. When the bidirectional threaded rod 31 rotates, it drives the slider 32 to move. The top of the slider 32 is rotatably connected to the connecting rod 33, and the top of the connecting rod 33 is rotatably connected to the connecting seat 34. The slider 32 can push the connecting seat 34 to move through the connecting rod 33. The top of the connecting seat 34 is fixedly connected to a support plate 35, and the top of the support plate 35 is fixedly connected to an ultrasonic detection gun 36. The support plate 35 will drive the ultrasonic detection gun 36 to move. A driving assembly 37 is provided in the middle of the inner bottom end of the movable mechanism 3, and a guide assembly 38 is provided on the front and rear sides of the inner bottom end of the movable mechanism 3. The driving assembly 37 includes a piezoelectric ceramic motor 371. The piezoelectric ceramic motor 371 is fixedly connected to the middle part of the inner bottom end of the gear ring 23, and the output end of the piezoelectric ceramic motor 371 is fixedly connected to the driving bevel gear 372, and the piezoelectric ceramic motor 371 will drive the driving bevel gear 372 to rotate. The outer middle part of the bidirectional threaded rod 31 is fixedly connected to the driven bevel gear 373, and the driven bevel gear 373 is meshed with the driving bevel gear 372. When the driving bevel gear 372 rotates, the driven bevel gear 373 will drive the bidirectional threaded rod 31 to rotate. The guide assembly 38 includes a hollow cylinder 381, and the two hollow cylinders 381 are respectively fixedly connected to the front and rear sides of the inner bottom end of the gear ring 23. The inner side of the hollow cylinder 381 is slidably connected with a sliding rod 382, and the top end of the sliding rod 382 is fixedly connected to the support plate 35, and the sliding rod 382 can provide guidance for the movement of the support plate 35;

[0040] Specifically, when the device is used, the piezoelectric ceramic motor 371 drives the active bevel gear 372 to rotate, and the meshing transmission of the active bevel gear 372 and the driven bevel gear 373 can further drive the bidirectional threaded rod 31 to rotate. As the bidirectional threaded rod 31 rotates, the sliders 32 on both sides will move accordingly. During the movement of the slider 32, the connecting seat 34 can be pushed to move through the connecting rod 33, and the support plate 35 will push the ultrasonic detection gun 36 to move, thereby ensuring that the ultrasonic detection gun 36 can continue to maintain close contact with the patient's skin, thereby avoiding interruption of ultrasonic imaging and improving the reliability of the use of the device.

[0041] Reference Figure 2 、 Figure 7 and Figure 8The auxiliary mechanism 4 includes a base 41, which is arranged on the front side of the machine body 1. The top of the base 41 is slidably connected to a bed board 42. The inner bottom of the bed board 42 is fixedly connected to a hydraulic rod 43. The rear end of the hydraulic rod 43 is fixedly connected to a sliding seat 44. The hydraulic rod 43 will pull the sliding seat 44 to move. The top of the sliding seat 44 is rotatably connected to a support rod 45. The top end of the support rod 45 is rotatably connected to a support seat 46. The sliding seat 44 can push the support seat 46 to move through the support rod 45. The top rear side of the bed board 42 is rotatably connected There is a push plate 47, the bottom of the push plate 47 is fixedly connected to the support seat 46, and the support seat 46 will push the push plate 47 to rotate. A lifting assembly 48 is provided on the lower side of the base 41. The lifting assembly 48 includes a hollow seat 481, which is provided on the lower side of the base 41. A movable plate 482 is slidably connected to the inner side of the hollow seat 481. The front and rear sides of the hollow seat 481 are fixedly connected to a hydraulic rod 483. The top of the hydraulic rod 483 is fixedly connected to the movable plate 482. The hydraulic rod 483 can pull the movable plate 482 downward;

[0042] Specifically, when using the device, when the patient needs to get up, the hydraulic rod 1 43 will pull the sliding seat 44 to move. During the movement of the sliding seat 44, the support seat 46 can be pushed to move through the support rod 45, so that the push plate 47 can rotate, thereby pushing the patient lying on the bed board 42 to gradually get up from a lying position. In addition, the hydraulic rod 2 483 will drive the movable plate 482 to move downward. As the movable plate 482 descends, the base 41 will also drive the bed board 42 to descend accordingly, so that patients with limited mobility can easily complete the actions of getting up and getting out of bed, thereby improving the convenience of using the device.

[0043] Reference Figure 3 The control mechanism 2 further includes a slide rail 27, two slide rails 27 are fixedly connected to the left and right sides of the lower middle portion of the inner wall of the body 1, and the outer sides of the slide rails 27 are slidably connected to the hollow block 5, and the slide rails 27 can provide a limit for the movement of the hollow block 5;

[0044] Specifically, the movement of the hollow block 5 is limited by the slide rail 27 , so that when the threaded column 25 rotates, the threaded sleeve 24 can push the hollow block 5 to move.

[0045] Reference Figure 5 and Figure 6 The front and rear sides of the lower middle portion of the inner wall of the gear ring 23 are fixedly connected with guide rods 39, and the outer side of the guide rods 39 is slidably connected to the slider 32, and the guide rods 39 provide guidance for the movement of the slider 32;

[0046] Specifically, the guide rod 39 provides guidance for the movement of the slider 32, so that when the bidirectional threaded rod 31 rotates, the slider 32 can move accordingly.

[0047] Example 2:

[0048] The method for using a multimodal imaging device based on ultrasound and MRI fusion includes the following steps:

[0049] S1. When using the device, the patient needs to be placed on the bed board 42 first, and then the hydraulic rod 2 483 is activated. The hydraulic rod 2 483 will drive the movable plate 482 to move downward, and the base 41 will then drive the bed board 42 to descend, so that the patient can lie on the bed board 42 conveniently. When the patient needs to stand up, the hydraulic rod 1 43 will pull the sliding seat 44 forward and push the support seat 46 to move through the support rod 45, thereby driving the push plate 47 to rotate. The push plate 47 can push the patient to sit up, making it convenient for the patient to stand up;

[0050] S2. After the patient lies on the bed board 42, the bed board 42 is pushed so that the patient can be sent into the body 1. The drive motor 263 is then started, driving the right transmission rod 21 to rotate. The transmission action of the pulley 261 and the transmission belt 262 can drive the left transmission rod 21 to rotate. The transmission rods 21 on both sides respectively drive the flat gear 22 to rotate, thereby driving the gear ring 23 to rotate, so that the ultrasonic detection gun 36 can be aimed at the patient's detection part. The ultrasonic detection gun 36 can move with the movement of the patient, so that the ultrasonic detection gun 36 can always be aimed at the patient's affected part.

[0051] S3. During testing, the piezoelectric ceramic motor 371 drives the active bevel gear 372 to rotate. Since the driven bevel gear 373 is engaged with the active bevel gear 372, the driven bevel gear 373 drives the bidirectional threaded rod 31 to rotate. When the bidirectional threaded rod 31 rotates, it drives the slider 32 to move, and the connecting seat 34 can be pushed to move through the connecting rod 33. The support plate 35 drives the ultrasonic testing gun 36 to move, so that the ultrasonic testing gun 36 can be closely attached to the patient's skin, thereby improving the quality of the ultrasonic testing image.

[0052] S4. By rotating the threaded column 25, the threaded sleeve 24 is driven to move. The threaded sleeve 24 can drive the ultrasonic detection gun 36 to move through the hollow block 5, so that ultrasonic detection can be performed on different parts of the patient.

[0053] Working principle: When using the device, the threaded column 25 is rotated, and the threaded column 25 will drive the threaded sleeve 24 to move, and the hollow block 5 will drive the ultrasonic detection gun 36 to move, so as to perform ultrasonic detection on different diseased parts of the patient, and the driving motor 263 will drive the right transmission rod 21 to rotate. The right transmission rod 21 can drive the left transmission rod 21 to rotate through the transmission effect of the pulley 261 and the transmission belt 262, thereby driving the flat gears 22 on both sides to rotate, and because the gear ring 23 is engaged with the flat gear 22, the gear ring 23 will drive the ultrasonic detection gun 36 to move left and right, so that the ultrasonic detection gun 36 can move with the movement of the patient, and there will be no unclear imaging due to the movement of the patient;

[0054] When the device is used, the piezoelectric ceramic motor 371 drives the active bevel gear 372 to rotate. Since the driven bevel gear 373 is engaged with the active bevel gear 372, the driven bevel gear 373 will drive the bidirectional threaded rod 31 to rotate, thereby driving the sliders 32 on both sides to move. When the sliders 32 move, the connecting rod 33 can push the connecting seat 34 to move, and the support plate 35 will push the ultrasonic detection gun 36 to move, so that the ultrasonic detection gun 36 can always be in contact with the patient's skin without imaging interruption.

[0055] Finally, when using the device, when the patient needs to get up, the hydraulic rod 1 43 will pull the sliding seat 44 to move. When the sliding seat 44 moves, the support rod 45 can push the support seat 46 to move, thereby driving the push plate 47 to rotate, which will push the patient lying on the bed board 42 to get up, and the hydraulic rod 2 483 can drive the movable plate 482 to move downward, and the base 41 will drive the bed board 42 to descend, which can help patients with limited mobility to use the device.

[0056] To ensure the safe, stable, and interference-free operation of the multimodal imaging device based on ultrasound and MRI fusion described herein in a strong magnetic field environment, magnetic compatibility was fully considered from the outset of the design. Specifically, all mechanical components and structures that may be exposed to or enter the strong magnetic field of the MRI are strictly constructed of non-magnetic or weakly magnetic materials. For example, the drive motor 263 is preferably a piezoelectric ceramic motor or a special motor made of non-ferromagnetic materials (such as copper or aluminum alloy). Key transmission and support components, such as the bidirectional threaded rod 31, driven bevel gear 373, slider 32, connecting rod 33, connecting seat 34, support plate 35, and the housing of the ultrasonic detection gun 36, are all constructed of materials insensitive to magnetic fields, such as medical-grade titanium alloys (such as Ti-6Al-4V), austenitic stainless steels (such as 316L stainless steel), and high-performance engineering plastics (such as polyetheretherketone (PEEK) and polyoxymethylene (POM). By strictly screening and designing the materials of these key components, this device can effectively avoid metal artifacts and magnetic field interference problems during MRI imaging, ensuring imaging quality and patient safety, thereby realizing the true fusion application of ultrasound and MRI.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multimodal imaging device based on fusion of ultrasound and MRI, comprising a body (1), characterized in that: A hollow block (5) is fixedly connected to the inner bottom of the body (1), a control mechanism (2) is provided on the inner side of the hollow block (5), and the control mechanism (2) is used to facilitate ultrasonic testing of different parts of the patient; a moving mechanism (3) is provided on the top of the hollow block (5), and the moving mechanism (3) is used to improve the stability of ultrasonic testing; an auxiliary mechanism (4) is provided on the front side of the body (1), and the auxiliary mechanism (4) is used to facilitate testing of the patient; The control mechanism (2) comprises a transmission rod (21), wherein the two transmission rods (21) are rotatably connected to the left and right sides of the interior of the hollow block (5), respectively; a flat gear (22) is fixedly connected to the middle portion of the outer side of the transmission rod (21); a gear ring (23) is rotatably connected to the top of the gear ring (22); the bottom of the gear ring (23) passes through the hollow block (5) and is meshed with the flat gear (22); a threaded sleeve (24) is fixedly connected to the bottom of the front side of the hollow block (5); a rear end of the threaded sleeve (24) passes through the hollow block (5); a threaded column (25) is rotatably connected to the bottom of the inner side of the machine body (1); the threaded column (25) is threadedly connected to the threaded sleeve (24); the rear end of the threaded column (25) passes through the machine body (1); and a transmission assembly (26) is provided on the front side of the interior of the hollow block (5).

2. The multimodal imaging device based on ultrasound and MRI fusion according to claim 1, characterized in that: The moving mechanism (3) comprises a bidirectional threaded rod (31), the bidirectional threaded rod (31) being rotatably connected to the middle and lower part of the inner side of the gear ring (23), the outer wall of the bidirectional threaded rod (31) being threadably connected to sliders (32) on both the left and right sides, the top of the slider (32) being rotatably connected to a connecting rod (33), the top of the connecting rod (33) being rotatably connected to a connecting seat (34), the top of the connecting seat (34) being fixedly connected to a support plate (35), the top of the support plate (35) being fixedly connected to an ultrasonic detection gun (36), a driving assembly (37) being provided at the middle of the inner bottom end of the moving mechanism (3), and guide assemblies (38) being provided at the front and rear sides of the inner bottom end of the moving mechanism (3).

3. The multimodal imaging device based on ultrasound and MRI fusion according to claim 1, characterized in that: The auxiliary mechanism (4) includes a base (41), the base (41) is arranged on the front side of the machine body (1), the top of the base (41) is slidably connected to a bed board (42), the inner bottom of the bed board (42) is fixedly connected to a hydraulic rod (43), the rear end of the hydraulic rod (43) is fixedly connected to a sliding seat (44), the top of the sliding seat (44) is rotatably connected to a support rod (45), the top end of the support rod (45) is rotatably connected to a support seat (46), the rear side of the top of the bed board (42) is rotatably connected to a push plate (47), the bottom of the push plate (47) is fixedly connected to the support seat (46), and a lifting component (48) is provided on the lower side of the base (41).

4. The multimodal imaging device based on ultrasound and MRI fusion according to claim 1, characterized in that: The transmission assembly (26) includes a pulley (261) and a transmission belt (262), the two pulleys (261) are respectively rotatably connected to the outside of the corresponding transmission rod (21), and the two pulleys (261) are transmission-connected via the transmission belt (262). A driving motor (263) is fixedly connected to the middle and lower part of the rear wall of the machine body (1), and the output end of the driving motor (263) passes through the machine body (1) and the hollow block (5) in sequence and is fixedly connected to the right transmission rod (21).

5. The multimodal imaging device based on ultrasound and MRI fusion according to claim 2, characterized in that: The driving assembly (37) includes a piezoelectric ceramic motor (371), the piezoelectric ceramic motor (371) is fixedly connected to the middle of the inner bottom end of the gear ring (23), the output end of the piezoelectric ceramic motor (371) is fixedly connected to a driving bevel gear (372), and the outer middle part of the bidirectional threaded rod (31) is fixedly connected to a driven bevel gear (373), and the driven bevel gear (373) is meshed with the driving bevel gear (372).

6. The multimodal imaging device based on ultrasound and MRI fusion according to claim 2, characterized in that: The guide assembly (38) includes a hollow cylinder (381), and the two hollow cylinders (381) are fixedly connected to the front and rear sides of the inner bottom end of the gear ring (23), respectively. The inner side of the hollow cylinder (381) is slidably connected to a sliding rod (382), and the top end of the sliding rod (382) is fixedly connected to the support plate (35).

7. The multimodal imaging device based on ultrasound and MRI fusion according to claim 3, characterized in that: The lifting assembly (48) includes a hollow seat (481), which is arranged on the lower side of the base (41). The inner side of the hollow seat (481) is slidably connected to a movable plate (482). The front and rear sides of the hollow seat (481) are fixedly connected to a second hydraulic rod (483), and the top of the second hydraulic rod (483) is fixedly connected to the movable plate (482).

8. The multimodal imaging device based on ultrasound and MRI fusion according to claim 1, characterized in that: The control mechanism (2) further comprises a slide rail (27), wherein the two slide rails (27) are respectively fixedly connected to the left and right sides of the lower middle portion of the inner wall of the machine body (1), and the outer sides of the slide rails (27) are slidably connected to the hollow block (5).

9. The multimodal imaging device based on ultrasound and MRI fusion according to claim 1, characterized in that: The front and rear sides of the middle and lower portion of the inner wall of the gear ring (23) are fixedly connected with guide rods (39), and the outer side of the guide rods (39) is slidably connected to the slider (32).

10. A method for using a multimodal imaging device based on ultrasound and MRI fusion, characterized in that: The multimodal imaging device based on ultrasound and MRI fusion according to any one of claims 1 to 9 comprises the following steps: S1. When using the device, the patient needs to be placed on the bed board (42) first, and then the hydraulic rod 2 (483) is started. The hydraulic rod 2 (483) will drive the movable board (482) to move downward, and the base (41) will then drive the bed board (42) to descend, so that the patient can lie on the bed board (42) conveniently. When the patient needs to stand up, the hydraulic rod 1 (43) will pull the sliding seat (44) forward and push the support seat (46) to move through the support rod (45), thereby driving the push plate (47) to rotate, and the push plate (47) can push the patient to sit up, making it convenient for the patient to stand up; S2. When the patient lies on the bed board (42), the bed board (42) is pushed so that the patient can be sent into the body (1). The driving motor (263) is then started, driving the right transmission rod (21) to rotate, and through the transmission action of the pulley (261) and the transmission belt (262), the left transmission rod (21) can be driven to rotate. The transmission rods (21) on both sides will respectively drive the flat gear (22) to rotate, thereby driving the gear ring (23) to rotate, so that the ultrasonic detection gun (36) can be aimed at the patient's detection part, and the ultrasonic detection gun (36) can move with the movement of the patient, so that the ultrasonic detection gun (36) can always be aimed at the patient's affected part; S3. During the test, the piezoelectric ceramic motor (371) drives the active bevel gear (372) to rotate. Since the driven bevel gear (373) is engaged with the active bevel gear (372), the driven bevel gear (373) drives the bidirectional threaded rod (31) to rotate. When the bidirectional threaded rod (31) rotates, it drives the slider (32) to move, and can push the connecting seat (34) to move through the connecting rod (33). The support plate (35) drives the ultrasonic detection gun (36) to move, so that the ultrasonic detection gun (36) can be closely attached to the patient's skin, thereby improving the quality of the ultrasonic detection image; S4. By rotating the threaded column (25), the threaded sleeve (24) is driven to move. The threaded sleeve (24) can drive the ultrasonic detection gun (36) to move through the hollow block (5), thereby being able to perform ultrasonic detection on different parts of the patient.

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