Nuclear magnetic resonance image and CT image fusion method and related equipment

Abstract

The invention relates to the technical field of image fusion, in particular to a fusion method of a nuclear magnetic resonance image and a CT image and related equipment. Comprising a scanning body and a moving seat on one side of the scanning body; the upper surface of the moving seat is fixedly connected with a workbench; the working table moves into the inner side of the scanning body to be scanned under the movement of the movable seat; one side of the workbench is rotationally connected with a driven roller through a first supporting block. A driven belt is wound on the outer wall of the driven roller; the number of the driven belts is two. The width of the single driven belt is not greater than 1 / 3 of the length of the driven roller in the axial direction of the driven roller; thigh and waist and abdomen positions of a bedridden patient are supported or wrapped through the driven belt, so that the patient can assist in ascending and descending of the workbench under the action of the driven belt, and compared with the original mode that the bedridden patient is lifted to ascend and descend of the workbench, CT examination of the bedridden patient is greatly facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of image fusion, and specifically to a method for fusing nuclear magnetic resonance images and CT images and related devices. Background Art

[0002] Magnetic resonance imaging (MRI) and computed tomography (CT) are two commonly used techniques in medical imaging, each with unique advantages. MRI provides high soft tissue contrast, which helps to identify different soft tissue types, while CT is good at providing high-resolution images of bones and other structures with higher density. Fusing MRI and CT images together can comprehensively utilize the advantages of these two imaging techniques and improve the accuracy of diagnosis.

[0003] In recent years, with the rapid development of computer technology, industrial technology, and medicine, the image modalities provided by medical imaging for clinical diagnosis have become increasingly diverse. Due to different imaging principles, multi-modal medical images have different characteristics and advantages for different modalities of medical images. Therefore, fusing images with different characteristics and advantages can reduce the error rate of clinical diagnosis.

[0004] According to different imaging methods of the images to be fused, it can be divided into homogeneous mode fusion and interactive mode fusion. The image fusion methods are single-mode fusion and multi-mode fusion, and medical images are divided into anatomical images and functional images. Single-mode fusion refers to the fusion of images with the same imaging method. Multi-mode fusion refers to the fusion of images obtained by morphological imaging and functional imaging techniques, that is, the fusion between images obtained by different imaging methods.

[0005] The method for fusing nuclear magnetic resonance images and CT images includes data acquisition, image preprocessing, image fusion, postprocessing, and final result verification and application. MRI scanning and CT scanning are common ways of data acquisition. Use an MRI scanner to obtain high-contrast images of soft tissues; use a CT scanner to obtain high-resolution images of bones and other structures with higher density; during the use of the CT scanner for scanning, the moving seat in the CT scanner will drive the patient on the upper surface of the workbench into the scanning body for scanning. Ordinary patients can get on and off the workbench by themselves before and after being scanned by the CT scanner, but for some bedridden patients, relevant personnel need to lift the patient to get on and off the workbench, which is inconvenient to use.

[0006] In view of this, in order to overcome the above technical problems, the present invention proposes a method for fusing nuclear magnetic resonance images and CT images and related devices, which solves the above technical problems. Summary of the Invention

[0007] To make up for the deficiencies of the prior art, the present invention proposes a method and related device for fusing nuclear magnetic resonance images and CT images. The present invention supports or wraps the thighs and the waist and abdomen positions of the bedridden patient through a driven belt, so that the patient can assist in moving the workbench up and down under the action of the driven belt. Compared with the original method of lifting the bedridden patient to move the workbench up and down, it greatly facilitates the CT examination of the bedridden patient.

[0008] The technical solution adopted by the present invention to solve its technical problems is as follows: A CT scanner described in the present invention includes a scanning body and a moving seat on one side of the scanning body; a workbench is fixedly connected to the upper surface of the moving seat; the workbench is moved into the inner side of the scanning body by the movement of the moving seat for scanning; one side of the workbench is rotatably connected to a driven roller through a first support block; a driven belt is wound around the outer wall of the driven roller; the number of the driven belts is two; the width of a single driven belt in the axial direction of the driven roller is not greater than 1 / 3 of the length of the driven roller; both of the two driven belts are wound around the end of the driven roller; the other end of the driven belt is fixedly connected to a holding rod; when the holding rod is lifted, the patient can be lifted and slid onto the workbench.

[0009] Preferably, a square groove is provided at the end of one of the holding rods; a square rod is provided at the end of the other holding rod; the square grooves and the square rods on the two holding rods are correspondingly arranged; the square rod can be inserted into the square groove.

[0010] Preferably, a driven sleeve is sleeved on the outer wall of the driven roller; the end of the driven belt far from the holding rod is connected to the outer wall of the driven sleeve; a chute is provided on the outer wall of the driven roller; a slider is slidably connected in the chute; the slider can slide along the axial direction of the driven roller; the slider is fixedly connected to the inner wall of the driven sleeve.

[0011] Preferably, a card slot is uniformly provided along the axial direction on the outer wall of the driven roller; a groove is provided at a position corresponding to the card slot on the inner wall of the driven sleeve; a clamping block is slidably connected in the groove; a first spring is connected between the clamping block and the bottom of the groove; a dial groove communicating with the groove is provided on the end face of the driven sleeve; a dial block is slidably connected in the dial groove; the dial block is fixedly connected to the clamping block; the dial block extends out of the dial groove and can be dialed.

[0012] Preferably, the other side of the workbench is rotatably connected to a driving roller through a second support block; a crank is fixedly connected to one end of the driving roller; a driving belt is wound around the outer wall of the driving roller; the other end of the driving belt bypasses the upper surface of the workbench and is connected to the outer wall of the middle section of the driven roller; the driving belt is located between the two driven belts.

[0013] Preferably, the outer wall of the holding rod is connected to a baffle; the baffle is distributed along the length direction of the holding rod; the setting direction of the baffle is perpendicular to the pulling direction of the driven belt under the horizontal direction; the baffle can block the patient's body.

[0014] Preferably, a retaining groove is provided on the outer wall of the holding rod; the retaining groove extends along the length direction of the holding rod; the retaining groove corresponds to the position of the baffle plate; the baffle plate is slidingly and sealingly connected in the corresponding retaining groove; the square rod is slidingly and sealingly connected to the square groove; the bottom of the square groove and the bottom of the corresponding retaining groove are connected through a first air hole; the square rod is penetrated by a second air hole along the length direction; the other end of the second air hole is connected to the bottom of the corresponding retaining groove; the baffle plate and the bottom of the corresponding retaining groove are connected by an elastic rope.

[0015] Preferably, convex bladders are evenly arranged on the outer surface of the active belt; the convex bladders are hemispherical in shape.

[0016] Preferably, the interiors of all the convex bladders are connected via third air holes; the interiors of the convex bladders and the third air holes are filled with a medium; and the convex bladders are made of a flexible material.

[0017] A method for fusing a nuclear magnetic resonance image and a CT image, the method is applicable to the above-mentioned CT scanner, and the steps of the method are as follows:

[0018] S1: The medical staff pushes the patient on the nursing bed close to the side of the workbench, controls the gripping rod to move over the patient's waist, abdomen and thighs to the side of the patient away from the workbench, and then inserts the square rod into the square slot, and the baffle extends out of the baffle slot;

[0019] S2: Shake the crank to drive the active roller to rotate, the active roller drives the active belt transmission to drive the driven roller to rotate, the driven roller drives the driven belt to be moved, so that the patient is transferred from the nursing bed to the workbench, and then the moving seat drives the patient on the workbench into the scanning body for scanning, and then moves out and returns to the original position;

[0020] S3: Pull the driven belt to drive the active belt to transfer the patient from the workbench to the surface of the nursing bed, complete the patient's CT scanning process, and then perform MRI scanning, thus completing the entire data acquisition process;

[0021] S4: Finally, perform image registration and image resampling in image preprocessing, image fusion and post-processing.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention supports or wraps the thighs and the waist and abdomen of bedridden patients through the driven belt, so that the patients can assist in moving up and down the workbench under the action of the driven belt. Compared with the original method of lifting the bedridden patients to move up and down the workbench, it greatly facilitates the CT examination of bedridden patients.

[0024] 2. The present invention adjusts the position of the driven belt in the length direction of the workbench, so that after the position of the driven belt changes, it can be applicable to patients with different body shapes, and has a wider application range; at the same time, it can avoid the situation of displacement caused by the driven sleeve during the process of the driven belt supporting the patient to move up and down the workbench, so that the distance between the two driven belts will not change, greatly improving the stability of the driven belt driving the patient to move up and down the workbench.

[0025] 3. The present invention realizes the process of the patient moving up and down the workbench more labor-saving through the cooperation of the active belt and the driven belt in winding and unwinding, making it more convenient for bedridden patients to use during the entire CT scanning and detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the drawings and embodiments.

[0027] Figure 1 is a perspective view of the present invention;

[0028] Figure 2 is a perspective view of the workbench and the moving seat in the present invention;

[0029] Figure 3 is Figure 2 an enlarged view of part A in

[0030] Figure 4 is Figure 2 an enlarged view of part B in

[0031] Figure 5 is Figure 2 a perspective view from another angle;

[0032] Figure 6 is Figure 5 an enlarged view of part C in

[0033] Figure 7 is a transmission perspective view of the driven belt and the active belt in the present invention;

[0034] Figure 8 is a cross-sectional view of the holding rod in the present invention;

[0035] Figure 9 is a position diagram of the groove in the present invention;

[0036] Figure 10 is Figure 9 an enlarged view of part D in

[0037] Figure 11 It is a schematic diagram of the cooperation between the square rod and the square groove in the present invention;

[0038] Figure 12 It is a partial cross-sectional view of the convex capsule and the driving belt in the present invention;

[0039] Figure 13 It is a flowchart of the method in the present invention.

[0040] In the figure: scanning body 1, moving seat 2, workbench 3, first support block 31, second support block 32, driven roller 4, chute 41, slider 42, card slot 43, driven belt 5, holding rod 6, square groove 61, square rod 62, baffle 63, retaining groove 64, first air hole 65, second air hole 66, elastic cord 67, driven sleeve 7, groove 71, clamping block 72, first spring 73, dial groove 74, dial block 75, driving roller 8, crank 81, driving belt 9, convex capsule 91, third air hole 92. Detailed implementation manners

[0041] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0042] As Figures 1 to 13 shown, the present invention includes the following embodiments:

[0043] Embodiment 1:

[0044] A CT scanner includes a scanning body 1 and a moving seat 2 on one side of the scanning body 1; the upper surface of the moving seat 2 is fixedly connected with a workbench 3; the workbench 3 is moved into the inner side of the scanning body 1 by the movement of the moving seat 2 for scanning; one side of the workbench 3 is rotatably connected with a driven roller 4 through a first support block 31; a driven belt 5 is wound around the outer wall of the driven roller 4; the number of the driven belts 5 is two; the width of a single driven belt 5 in the axial direction of the driven roller 4 is not greater than 1 / 3 of the length of the driven roller 4; both of the two driven belts 5 are wound around the end of the driven roller 4; the other end of the driven belt 5 is fixedly connected with a holding rod 6; when the holding rod 6 is lifted, the patient can be lifted and slid onto the workbench 3.

[0045] In this embodiment, a square groove 61 is provided at the end of one of the holding rods 6; a square rod 62 is provided at the end of the other holding rod 6; the square grooves 61 and the square rods 62 on the two holding rods 6 are arranged corresponding to each other; the square rod 62 can be inserted into the square groove 61.

[0046] When working, after medical staff transfer the bedridden patient to one side of the workbench 3 using the nursing bed, they adjust the height of the nursing bed so that the upper surface of the nursing bed is flush with the upper surface of the workbench 3. It should be noted that the height adjustment of the nursing bed is preferably completed before approaching one side of the workbench 3, thus saving time for CT scan preparation work. The medical staff will move the nursing bed close to and tightly against one side of the nursing bed, and then pull the holding rod 6 to drive the driven belt 5 to unwind from the driven roller 4 and unfold. The patient's head is close to the scanning body 1. The number of holding rods 6 is two. The holding rod 6 far from the scanning body 1 will move to the nursing bed. After slightly lifting the patient's thighs on the nursing bed, the holding rod 6 far from the scanning body 1 is passed through the gap between the patient's thighs and the upper surface of the nursing bed, so that the holding rod 6 moves over the patient's thighs to the side of the patient far from the workbench 3, so that the driven belt 5 far from the scanning body 1 holds the patient's thigh position. Then, the patient's waist on the nursing bed is slightly lifted, and the holding rod 6 close to the scanning body 1 is controlled to pass through the gap between the patient's waist and abdomen and the upper surface of the workbench 3. The holding rod 6 close to the scanning body 1 moves to the side of the patient far from the workbench 3, so that the driven belt 5 close to the scanning body 1 holds the patient's waist and abdomen position. Then, when the square groove 61 on the two holding rods 6 corresponds to the square rod 62, the square rod 62 is inserted into the square groove 61 to realize the connection between the two holding rods 6, so that the two holding rods 6 form an integral body. While being convenient to hold, the two driven belts 5 are kept on the same plane. Finally, the two holding rods 6 are directly controlled to lift. During the lifting process of the two holding rods 6, the ends of the two driven belts 5 far from the driven roller 4 are higher than the ends close to the driven roller 4, so that the two driven belts 5 are in an inclined state. The two driven belts 5 occupy two 1 / 3 lengths of the length of the driven roller 4. In this way, within a certain width, the patient's thigh and waist and abdomen positions can be held. During the process of the driven belt 5 being lifted and inclined, the patient will slide from the upper surface of the two driven belts 5 to the workbench 3, completing the process of the bedridden patient getting onto the workbench 3. All parts of this application are made of non-metallic materials to avoid affecting the scanning detection. Subsequently, the controller controls the moving seat 2 to work. The moving seat 2 will drive the patient on the workbench 3 into the inside of the scanning body 1 and be scanned and detected. After the scanning is completed, the moving seat 2 will drive the workbench 3 out of the inside of the scanning body 1, so that the workbench 3 returns to the initial position close to the nursing bed. After the square rod 62 at the end of the two holding rods 6 is pulled out from the corresponding square groove 61, the two holding rods 6 are respectively passed through the positions under the patient's waist and abdomen and thighs, and then wound back above the patient, so that the patient's waist and abdomen position and thigh position are covered. Finally, after the connection between the two holding rods 6 is completed, the holding rods 6 are pulled towards the nursing bed direction, so that the two holding rods 6 simultaneously pull the corresponding driven belts 5, so that the two driven belts 5 shift the patient from the workbench 3 to the upper surface of the nursing bed during the pulling process, completing the process of unloading the bedridden patient from the workbench 3, and completing the entire CT scanning process.When there is no need to use the driven belt 5 to assist the upper workbench 3, the rotation of the driven roller 4 can be controlled to wind the driven belt 5 onto the driven roller 4;

[0047] In the present invention, the thigh and the waist and abdomen positions of the bedridden patient are supported or covered by the driven belt 5, so that the patient can be assisted to move up and down the workbench 3 under the action of the driven belt 5. Compared with the original method of lifting the bedridden patient to move the workbench 3 up and down, it greatly facilitates the CT examination of the bedridden patient.

[0048] Embodiment 2:

[0049] The outer wall of the driven roller 4 is sleeved with a driven sleeve 7; one end of the driven belt 5 far from the holding rod 6 is connected to the outer wall of the driven sleeve 7; a chute 41 is arranged on the outer wall of the driven roller 4; a slider 42 is slidably connected in the chute 41; the slider 42 can slide along the axial direction of the driven roller 4; the slider 42 is fixedly connected to the inner wall of the driven sleeve 7.

[0050] In this embodiment, a card slot 43 is uniformly arranged along the axial direction on the outer wall of the driven roller 4; a groove 71 is arranged at a position corresponding to the card slot 43 on the inner wall of the driven sleeve 7; a clamping block 72 is slidably connected in the groove 71; the clamping block 72 is connected to the bottom of the groove 71 through a first spring 73; a dial groove 74 communicating with the groove 71 is arranged on the end face of the driven sleeve 7; a dial block 75 is slidably connected in the dial groove 74; the dial block 75 is fixedly connected to the clamping block 72; the dial block 75 extends out of the dial groove 74 and can be dialed.

[0051] During operation, after the medical staff move the bedridden patient along with the nursing bed to one side of the workbench 3, the nursing bed and the workbench 3 are brought close to and closely attached at the same height. The medical staff will, according to the positions of the patient's thighs and waist and abdomen, move the dial block 75 sliding in the dial groove 74. After being moved, the dial block 75 will drive the locking block 72 to move towards the bottom of the groove 71 against the elastic force of the first spring 73, so that the end of the locking block 72 away from the first spring 73 will move out of the corresponding card slot 43, completing the unlocking process between the driven sleeve 7 and the outer wall of the driven roller 4. Subsequently, the medical staff can control the axial movement of the driven sleeve 7 along the driven roller 4. The driven sleeve 7 will drive the slider 42 to slide along the sliding groove 41. With the cooperation of the slider 42 and the sliding groove 41, the driven sleeve 7 cannot rotate with the driven roller 4 and can only perform axial movement. When the driven sleeve 7 moves to a suitable position, the dial block 75 is released. The first spring 73 will push the locking block 72 to move along the groove 71 away from the bottom of the groove 71. The first spring 73 will push the locking block 72 to insert into one of the corresponding multiple card slots 43, thus completing the re-locking of the driven sleeve 7 and the driven roller 4. In this way, it is avoided that the driven sleeve 7 is displaced during the process of the driven belt 5 supporting the patient to move up and down the workbench 3, so that the distance between the two driven belts 5 does not change, greatly improving the stability of the driven belt 5 driving the patient to move up and down the workbench 3; by adjusting the position of the driven belt 5 in the length direction of the workbench 3, after the position of the driven belt 5 changes, it can be applicable to patients with different body shapes, and the applicable range is wider.

[0052] Embodiment 3:

[0053] The other side of the workbench 3 is rotatably connected to the driving roller 8 through the second support block 32; one end of the driving roller 8 is fixedly connected to the crank 81; the outer wall of the driving roller 8 is wound with the driving belt 9; the other end of the driving belt 9 bypasses the upper surface of the workbench 3 and is connected to the outer wall of the middle section of the driven roller 4; the driving belt 9 is located between the two driven belts 5; the driving belt 9 and the driven belt 5 are wound around the driven roller 4 in opposite directions.

[0054] In this embodiment, a baffle 63 is connected to the outer wall of the holding rod 6; the baffle 63 is distributed along the length direction of the holding rod 6; the setting direction of the baffle 63 is perpendicular to the pulling direction of the driven belt 5 under the horizontal; the baffle 63 can block the patient's body.

[0055] In this embodiment, a retaining groove 64 is provided on the outer wall of the holding rod 6; the retaining groove 64 extends along the length direction of the holding rod 6; the retaining groove 64 corresponds to the position of the baffle 63; the baffle 63 is slidably and sealingly connected in the corresponding retaining groove 64; the square rod 62 is slidably and sealingly connected to the square groove 61; a first air hole 65 communicates between the bottom of the square groove 61 and the bottom of the corresponding retaining groove 64; the square rod 62 is provided with a second air hole 66 extending through along the length direction; the other end of the second air hole 66 communicates with the bottom of the corresponding retaining groove 64; the baffle 63 is connected to the bottom of the corresponding retaining groove 64 by an elastic cord 67.

[0056] During operation, the driven belt 5 is in an unwinding state after the CT scan of the last bedridden patient is completed, so that the driven belt 5 is unfolded on one side of the workbench 3 under the action of the holding rod 6. As the nursing bed moves, the medical staff moves the nursing bed to one side of the workbench 3 and keeps the nursing bed close to the workbench 3 at the same height as the workbench 3. Then, the ends of the two holding rods 6 are controlled to be disconnected, that is, the square rod 62 is moved out of the corresponding square groove 61, and the two holding rods 6 are controlled to pass under the patient's thighs and waist respectively. Since the baffle 63 is located inside the corresponding baffle groove 64, the volume of the entire holding rod 6 is relatively small. The holding rod 6 is small, so that the gap between the patient and the nursing bed can be better passed through. When both holding rods 6 are moved to the side of the patient's body away from the workbench 3, the square rod 62 at the end of one holding rod 6 is inserted into the square groove 61 at the end of the other holding rod 6. In this way, on the one hand, the two holding rods 6 are connected, and at the same time, the gas in the square groove 61 is squeezed and the pressure increases, so that the gas can enter the corresponding retaining groove 64 along the first air hole 65 and the second air hole 66, thereby pushing the baffle 63 to overcome the elastic force of the elastic rope 67 and move out of the corresponding retaining groove 64, and the baffle 63 extending from the outer wall of the holding rod 6 is enlarged. The shape of the holding rod 6 allows the baffle 63 and the holding rod 6 to be stuck on the side of the patient's body away from the workbench 3, and then the crank 81 is manually cranked to drive the active roller 8 to rotate. During the rotation of the active roller 8, the active belt 9 will be driven to transmit on the workbench 3. During the transmission of the active belt 9, the active roller 8 can start to reel up, and the driven roller 4 starts to unreel. During the unreeling of the active belt 9, the driven roller 4 will reel up the driven belt 5, thereby driving the driven belt 5 to wind toward the outer wall of the driven roller 4. During the reeling of the driven belt 5, the holding rod 6 and the baffle 63 will be driven to move toward the workbench 3. The patient's waist, abdomen and thighs are blocked by the baffle 63, so that the patient The moving seat 63 and the holding rod 6 move with the movement of the driven belt 5. The specifications of the baffle 63 and the holding rod 6 are selected according to the actual situation to ensure that the patient is moved. The patient is transferred from the nursing bed to the workbench 3 under the coordinated movement of the baffle 63, the holding rod 6 and the driven belt 5. When the patient is in contact with the active belt 9, the active belt 9 will drive the patient to move further to the center position of the upper surface of the workbench 3, thus completing the process of the patient getting on the workbench 3. Compared with the original method of using the inclined surface of the driven belt 5 to lift and enter the upper surface of the workbench 3, this embodiment is more labor-saving. Then the moving seat 2 drives the workbench 3 to enter the scanning body 1, so that the patient is moved out again after the scanning is completed.

[0057] When the medical staff horizontally pull the holding rod 6 away from the workbench 3 while keeping the side edge of the nursing bed close to one side of the workbench 3, the holding rod 6 will unwind from the driven roller 4 during the pulling process. During the unwinding process of the holding rod 6 on the driven belt 5, the driving belt 9 will be wound up. In this way, the driving roller 8 starts to unwind. Thus, when the driven belt 5 is driven by the holding rod 6 and moves away from the workbench 3, the driving belt 9 will move towards the nursing bed, so as to support the patient's buttocks through the driving belt 9 and move the patient from the workbench 3 to the nursing bed. During the process of entering the nursing bed, under the further transmission of the driven belt 5, the patient will move to the central position on the nursing bed. In this way, the process of unloading the patient from the workbench 3 is completed;

[0058] In this embodiment, through the cooperation of the driving belt 9 and the driven belt 5 for mutual winding and unwinding, the process of the patient getting on and off the workbench 3 is realized more labor-saving, making it more convenient for the bedridden patient to use during the whole CT scan detection process.

[0059] Embodiment 4:

[0060] The outer surface of the driving belt 9 is evenly provided with convex sacs 91; the shape of the convex sacs 91 when bulging is hemispherical.

[0061] In this embodiment, all the convex sacs 91 are communicated with each other through the third air holes 92; the convex sacs 91 and the third air holes 92 are filled with media; the convex sacs 91 are made of flexible materials.

[0062] During operation, when the driven belt 5 drives the patient to move onto the upper surface of the workbench 3, the patient will come into contact with the driving belt 9 on the workbench 3. The convex sacs 91 are arranged on the outer surface of the driving belt 9, so as to buffer the patient and at the same time increase the friction with the patient to prevent the patient from sliding off the workbench 3. When the driving belt 9 drives the patient to move onto the upper surface of the nursing bed, the convex sacs 91 on the outer surface of the driving belt 9 increase the friction force in contact with the patient. At the same time, when one of the convex sacs 91 is pressed, the medium in the convex sac 91 will be squeezed into the interiors of other convex sacs 91 along the third air holes 92. In this way, the multiple convex sacs 91 can better adapt to the patient's skin surface, further increasing the friction force in contact with the patient, enabling the patient to be driven better and more stably, and enabling the patient to move more stably on the driving belt 9 to the nursing bed. During the winding process of the driving belt 9, the pressed convex sacs 91 will make the medium enter the interiors of the convex sacs 91 that are not wound up along the third air holes 92. In this way, on the one hand, it does not affect the winding of the driving belt 9, while keeping the convex sacs 91 above the workbench 3 in a bulging state to meet the use requirements.

[0063] Embodiment 5:

[0064] A method for fusing nuclear magnetic resonance images and CT images, which is applicable to the above-mentioned CT scanner. The steps of this method are as follows:

[0065] S1: Medical staff push the patient on the nursing bed and closely attach it to one side of the workbench 3. Control the holding rod 6 to move across the patient's waist, abdomen and thighs to the side of the patient away from the workbench 3. Then insert the square rod 62 into the square groove 61, and the baffle 63 will extend out of the blocking groove 64;

[0066] S2: Shake the crank handle 81 to drive the driving roller 8 to rotate. The driving roller 8 drives the driving belt 9 to drive the driven roller 4 to rotate. The driven roller 4 drives the driven belt 5 to move, so that the patient is transferred from the nursing bed to the workbench 3. Then the moving seat 2 drives the patient on the workbench 3 into the scanning body 1 for scanning and moves out and returns to the original position;

[0067] S3: Pull the driven belt 5 to drive the driving belt 9 to transfer the patient from the workbench 3 to the upper surface of the nursing bed, complete the CT scanning process of the patient, and then perform MRI scanning, thus completing the entire data acquisition process;

[0068] S4: Finally, perform image registration and image resampling in image preprocessing, and then perform image fusion and post-processing.

[0069] During operation, data acquisition is carried out first: Use an MRI scanner to obtain high-contrast images of soft tissues; Use a CT scanner to obtain high-resolution images of bones and other high-density structures; Then perform image preprocessing. Image registration: Select a registration method (rigid or non-rigid), extract feature points, use these points to align the images, use an intensity-based optimization algorithm for registration, verify the registration result, and confirm the accuracy of registration through methods such as overlapping display and difference images; Image resampling: Adjust the two images to the same spatial resolution and voxel size; Subsequently, perform image fusion. Pixel-level fusion: Use the weighted average method to perform weighted averaging on the MRI and CT pixel values at corresponding positions, use the maximum / minimum value method to select the maximum or minimum pixel value at corresponding positions, and use multi-scale transformation (such as wavelet transformation) to fuse the details and edge information of the images; Region-level fusion: Segment the image, divide the image into several regions, process the segmented regions separately, and fuse the MRI and CT images according to the region characteristics respectively; Finally, perform post-processing: Enhance the contrast and clarity of the fused image, and perform color coding on the information of different modalities for easy distinction and analysis.

[0070] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation on the protection scope of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0071] The basic principles, main features, and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A CT scanner, comprising a scanning body (1) and a moving seat (2) on one side of the scanning body (1); the upper surface of the moving seat (2) is fixedly connected to a workbench (3); the workbench (3) moves into the inner side of the scanning body (1) under the movement of the moving seat (2) to be scanned; characterized in that: One side of the workbench (3) is rotatably connected to a driven roller (4) via a first support block (31); a driven belt (5) is wound around the outer wall of the driven roller (4); there are two driven belts (5); the width of a single driven belt (5) is not greater than 1 / 3 of the length of the driven roller (4) in the axial direction of the driven roller (4); the two driven belts (5) are both wound around the ends of the driven roller (4); the other end of the driven belt (5) is fixedly connected to a gripping rod (6); when the gripping rod (6) is lifted, the patient can be lifted and slid onto the workbench (3).

2. A CT scanner according to claim 1, characterized in that: A square groove (61) is provided at the end of one of the holding rods (6); a square rod (62) is provided at the end of the other holding rod (6); the square grooves (61) and the square rods (62) on the two holding rods (6) are arranged corresponding to each other; and the square rod (62) can be inserted into the square groove (61).

3. A CT scanner according to claim 2, characterized in that: The outer wall of the driven roller (4) is sleeved with a driven sleeve (7); the end of the driven belt (5) away from the holding rod (6) is connected to the outer wall of the driven sleeve (7); the outer wall of the driven roller (4) is provided with a slide groove (41); the slide groove (41) is slidably connected with a slider (42); the slider (42) can slide along the axial direction of the driven roller (4); the slider (42) is fixedly connected to the inner wall of the driven sleeve (7).

4. A CT scanner according to claim 2, characterized in that: The outer wall of the driven roller (4) is evenly provided with clamping grooves (43) along the axial direction; the inner wall of the driven sleeve (7) is provided with a groove (71) at a position corresponding to the clamping groove (43); a clamping block (72) is slidably connected in the groove (71); the clamping block (72) is connected to the bottom of the groove (71) through a first spring (73); the end surface of the driven sleeve (7) is provided with a shifting groove (74) connected to the groove (71); a shifting block (75) is slidably connected in the shifting groove (74); the shifting block (75) is fixedly connected to the clamping block (72); the shifting block (75) extends out of the shifting groove (74) and can be shifted.

5. A CT scanner according to claim 3, characterized in that: The other side of the workbench (3) is rotatably connected to the active roller (8) via a second support block (32); one end of the active roller (8) is fixedly connected to a crank (81); a driving belt (9) is wound around the outer wall of the active roller (8); the other end of the active belt (9) passes over the upper surface of the workbench (3) and is connected to the outer wall of the middle section of the driven roller (4); the active belt (9) is located between the two driven belts (5).

6. A CT scanner according to claim 5, characterized in that: The outer wall of the holding rod (6) is connected to a baffle (63); the baffle (63) is distributed along the length direction of the holding rod (6); the baffle (63) is arranged in a direction perpendicular to the pulling direction of the driven belt (5) under the horizontal direction; and the baffle (63) can block the patient's body.

7. A CT scanner according to claim 6, characterized in that: The outer wall of the holding rod (6) is provided with a retaining groove (64); the retaining groove (64) extends along the length direction of the holding rod (6); the retaining groove (64) corresponds to the position of the retaining plate (63); the retaining plate (63) is slidingly and sealingly connected in the corresponding retaining groove (64); the square rod (62) is slidingly and sealingly connected to the square groove (61); the bottom of the square groove (61) and the bottom of the corresponding retaining groove (64) are connected through a first air hole (65); the square rod (62) is penetrated by a second air hole (66) along the length direction; the other end of the second air hole (66) is connected to the bottom of the corresponding retaining groove (64); the retaining plate (63) and the bottom of the corresponding retaining groove (64) are connected through an elastic rope (67).

8. A CT scanner according to claim 5, characterized in that: The outer surface of the active belt (9) is evenly provided with convex sacs (91); the convex sacs (91) are hemispherical in shape when bulged.

9. A CT scanner according to claim 8, characterized in that: The interiors of all the convex sacs (91) are connected via the third air holes (92); the interiors of the convex sacs (91) and the third air holes (92) are filled with a medium; and the convex sacs (91) are made of a flexible material.

10. A method for fusing a nuclear magnetic resonance image and a CT image, the method being applicable to the CT scanner according to any one of claims 1 to 9, characterized in that: The steps of this method are as follows: S1: The medical staff pushes the patient on the nursing bed and places the patient close to one side of the workbench (3), controls the gripping rod (6) to move over the patient's waist, abdomen and thighs to the side of the patient away from the workbench (3), and then inserts the square rod (62) into the square groove (61), and the baffle (63) extends out from the baffle groove (64); S2: Shaking the crank (81) drives the active roller (8) to rotate, the active roller (8) drives the active belt (9) to drive the driven roller (4) to rotate, the driven roller (4) drives the driven belt (5) to be moved, so that the patient is transferred from the nursing bed to the workbench (3), and then the moving seat (2) drives the patient on the workbench (3) to enter the scanning body (1) for scanning, and then moves out and returns to the original position; S3: Pull the driven belt (5) to drive the active belt (9) to transfer the patient from the workbench (3) to the upper surface of the nursing bed, complete the patient's CT scanning process, and then perform an MRI scan, thus completing the entire data acquisition process; S4: Finally, perform image registration and image resampling in image preprocessing, image fusion and post-processing.

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