259 results about "Coronal plane" patented technology

The present invention relates to the technical field of stomatology. Provided is an auxiliary dental implant generation method based on a diffusion model. The method in the present invention comprises: acquiring oral CBCT image data of historical patients, preprocessing the oral CBCT image data of the historical patients to obtain a CBCT image dataset, using the CBCT image dataset to train a multi-task segmentation network, and using the segmentation network to obtain an intraoral tissue segmentation result; using the intraoral tissue segmentation result to train detection networks from the three dimensions of a cross-sectional plane, a coronal plane and a sagittal plane, respectively; using the detection networks to obtain detection results in the three directions of the cross-sectional plane, the coronal plane and the sagittal plane; fusing the detection results in the three directions of the cross-sectional plane, the coronal plane and the sagittal plane, and using a majority voting algorithm to construct a three-dimensional bounding box, so as to acquire an edentulous area; and using the intraoral segmentation result and the edentulous area as prompt information to guide, by means of an iterative process, a network to generate a post-implantation effect. The implantation effect obtained by the present invention is highly accurate, thereby providing a more precise auxiliary tool for stomatology.

The invention relates to the technical field of human body health assessment, in particular to a health assessment method and system based on a 3D human body posture image model. The method comprises the following steps: acquiring human body annular scanning data; extracting a dynamic posture sequence of a vertical position, a forward bending position and a lateral bending position of the human body annular scanning data, and performing phase shift fringe projection on the human body annular scanning data according to the dynamic posture sequence to obtain human body three-dimensional point cloud data; a sagittal plane, a coronal plane and a cross section of the human body three-dimensional point cloud data are analyzed for orthogonal projection, and a human body multi-angle projection image group is generated; and identifying skeleton contour features of the human body multi-angle projection image group so as to establish a dynamic marking system of the anatomical mark points. Through high-precision dynamic acquisition and multi-dimensional space analysis, precision, standardization and individuation of 3D human body posture health assessment are realized, and the accuracy and comprehensiveness of human body posture health assessment are improved.

The invention provides an auxiliary dental implant generation method based on a diffusion model, and relates to the technical field of stomatology, and the method comprises the steps: obtaining historical patient oral cavity CBCT image data, carrying out the preprocessing of the historical patient oral cavity CBCT image data, obtaining a CBCT image data set, training a multi-task segmentation network through the CBCT image data set, and obtaining a CBCT image data set; obtaining an intra-oral tissue segmentation result in the segmentation network; respectively training a detection network from three dimensions of a cross section, a coronal plane and a sagittal plane by using an intraoral tissue segmentation result; obtaining detection results in three directions of a cross section, a coronal plane and a sagittal plane by using a detection network; fusing the detection results in the three directions of the cross section, the coronal plane and the sagittal plane, constructing a three-dimensional bounding box by using a majority voting algorithm, and obtaining an edentulous region; the intraoral segmentation result and the edentulous area serve as prompt information, the network is guided through the iteration process to generate the post-implantation effect, the implantation effect obtained through the method is high in accuracy, and a more accurate auxiliary tool can be provided for stomatology.

The invention discloses a spine three-dimensional evaluation method and system based on RGB images and anatomical constraints, and belongs to the field of medical image analysis. The method comprises the following steps: carrying out preprocessing and anatomical symmetry correction on an upright position back RGB image shot by the intelligent mobile equipment for a single time; extracting regions of interest of shoulder blade and iliac crest mark points by using a lightweight segmentation network; generating an initial depth map through a depth estimation model fusing a vertebra attention mechanism and a multi-constraint loss function; carrying out physiological scale calibration on the initial depth map based on height and weight parameters; a cascade GAN is adopted to eliminate clothes interference and reconstruct a back three-dimensional surface; based on biomechanical characteristics, NURBS parameters are adjusted in a self-adaptive mode to fit a spine three-dimensional curve; and outputting a coronal plane Cobb angle, a trunk rotation angle and a sagittal plane curvature parameter. Through monocular depth estimation and dynamic evaluation of anatomical constraint, the problems of radiation risk, subjective error and clothes interference of a traditional method are solved.

Various embodiments of bone ties, bone tie inserters, and methods for treating the spine are provided. The methods can include wrapping the bone tie around transverse processes of adjacent vertebrae to correct coronal plane deformity. The methods can include wrapping the bone tie around the spinous process of one vertebra and around the transverse process of a second adjacent vertebra to achieve rotational correction. The methods can include wrapping the bone tie around the lamina of adjacent vertebrae to achieve sagittal correction. The methods can include applying tension to the bone tie to set the sagittal correction. The methods can include passing the bone tie through a lumen in a vertebral body or a pedicle of the inferior vertebra and the lamina or articular process of the superior vertebra.

The invention relates to the medical instrument technology, and discloses an ultrasonic intervention automatic puncture surgical robot and a control method, and the ultrasonic intervention automatic puncture surgical robot comprises a needle feeding mechanism, a rotating mechanism, a probe clamping mechanism, a depth control mechanism and a force sensor mechanism; wherein the probe feeding mechanism is connected with the depth control mechanism through the rotating mechanism, the depth control mechanism is connected with the back surface of a main body substrate of the probe clamping mechanism, the front surface of the main body substrate is provided with a clamping piece of an ultrasonic probe, and the main body substrate is also fixedly provided with the force sensor mechanism; the rotating mechanism is used for adjusting the needle inserting angle of the needle inserting mechanism; the depth control mechanism is used for controlling the needle feeding mechanism to move in the vertical direction; a puncture needle which advances and retreats in a linear motion manner is arranged in the needle feeding mechanism, and the puncture needle is arranged on the coronal plane of the ultrasonic probe; the force sensor mechanism is used for measuring the force applied to the human tissue by the puncture needle. The invention aims to realize automation, precision and safety of the puncture operation and reduce the workload of doctors.

The invention discloses a mandibular neural tube automatic segmentation method based on multi-view guidance, and relates to the technical field of oral medical treatment. Comprising the following steps: collecting original oral cavity CBCT image data, and performing preprocessing; sending the preprocessed image data into a mandible segmentation network, and segmenting a mandible region containing a mandible neural tube; a contrast enhancement technology is adopted for the segmented mandible area; projecting the processed mandible image along three orthogonal tangent planes of a coronal plane, a sagittal plane and a cross section; performing key point detection on the mandibular neural tubes on the three projection planes by using the trained key point detection network to obtain shape information of the mandibular neural tubes; and the features are combined with texture direction features to be input into a three-dimensional CBCT mandibular neural tube segmentation network, and accurate 3D segmentation is carried out. Two-dimensional missing space information is avoided, and mandibular neural tube segmentation is more complete and accurate.

The invention discloses a positioning puncture surgery robot system with a reconfigurable working space, and the system comprises a multi-mode image collection module which is used for obtaining a high-resolution image of a target region of a patient; the three-dimensional anatomical model reconstruction module is used for generating a three-dimensional anatomical model containing a skeleton structure and a soft tissue structure; the target point selection and puncture path generation module is used for automatically recommending puncture target points according to operation types and clinical requirements and automatically generating a plurality of preliminary puncture paths; the multi-plane segmentation and path injection module is used for segmenting the three-dimensional anatomical model from a coronal plane, a sagittal plane and an axial plane and generating slices, and injecting puncture paths into the corresponding slices; by integrating multi-modal image acquisition, three-dimensional anatomical model reconstruction and automatic path planning and optimization setting, the operation efficiency and accuracy are remarkably improved, the operation risk is reduced through real-time data analysis, and a more personalized treatment scheme is provided for a patient.

The invention relates to the technical field of robots, and discloses an electro-hydraulic hybrid driving and driven humanoid robot lower limb and waist assembly which serves as a connection foundation of lower limbs and a robot trunk. The near ends of the thigh assemblies are connected with the waist assembly through hip joints; the near end of the shank assembly is connected with the far end of the thigh assembly through a knee joint; the foot component is connected with the far end of the shank component through an ankle joint; the hip joint is provided with three rotational degrees of freedom, the knee joint is provided with one rotational degree of freedom, and the ankle joint is provided with two rotational degrees of freedom; the rotational degree of freedom of each joint in a sagittal plane is driven by an active hydraulic actuator and a passive hydraulic actuator; the rotational degree of freedom of each joint in a horizontal plane and a coronal plane is driven by a motor joint module; the advantages of electric drive and hydraulic drive are brought into full play, and the problems of high power consumption in the negative work stage, complex traditional hydraulic drive pipelines and the like are solved by adopting an active and passive combined distributed hydraulic drive technology.

The invention provides a knee joint dyskinesia function evaluation method and system. The method comprises the following steps: by collecting lower limb kinematics parameters, plantar pressure distribution data and gait rhythm parameter groups of a subject in a standard gait test, generating a knee joint motion trail map comprising sagittal plane, coronal plane and rotation trail components, dividing a dynamic phase window based on the gait rhythm parameters, calculating a fluctuation feature vector of a sagittal plane track component, performing nonlinear decomposition on a coronal plane and a rotation track component to separate an adduction and abduction motion principal component and a rotation coupling component, constructing a joint stability quantitative index, and performing dynamic space registration on a bilateral knee joint track map to obtain a joint stability quantitative index; and calculating a three-dimensional trajectory similarity weight matrix, and calculating a dynamic symmetry index in combination with the cross-side difference coefficient of the joint stability quantitative index. According to the technical scheme provided by the invention, a scientific basis is provided for personalized rehabilitation treatment.

The invention relates to a three-dimensional lower jawbone image restoration method based on comparative learning prior and mask autoregression. The method comprises the following steps: acquiring a maxillofacial region three-dimensional CT image of a patient; for the image of the mandible of the patient, respectively obtaining coarse repair results on a coronal plane, a sagittal plane and a cross section through a two-dimensional repair model; the two-dimensional repair model and the mask autoregression strategy are adopted, comparison learning loss is added, global sample feature information is obtained by using a pre-trained ViT model, and the lambda model is guided to complete intra-layer repair of global information and local fine-grained information; and fusing the coarse repair results of different layers obtained by the two-dimensional model by adopting a fine repair module based on residual fusion to obtain a three-dimensional repair result. Compared with the prior art, the method has the advantages that the deep learning technology is utilized, a brand new medical image restoration algorithm is constructed, the full-automatic restoration result of the maxillofacial region three-dimensional CT is achieved, and effective assistance is provided for preoperative accurate planning.

The invention relates to the technical field of artificial hip joint prostheses, in particular to a short femoral stem prosthesis for hip joint revision and replacement surgery and a manufacturing method of the short femoral stem prosthesis. Comprising a femoral head cone (1), a femoral neck (2) and a stem body (3) which are sequentially connected. The femoral head cone (1) is used for installing a femoral head prosthesis, and the coronal plane of the femoral neck (2) is gradually increased in the direction from the femoral head cone (1) to the handle body (3); the stem body (3) is configured to be implanted into a femoral medullary cavity and used for replacing an originally implanted ineffective primary replacement femoral stem prosthesis, the stem body (3) comprises a near-end stem body (31) and a far-end stem body (32) which are sequentially connected, the near-end stem body (31) is composed of a porous structure (303) and a stem body base body (315) below the porous structure (303), and the near-end stem body (31) starts from an osteotomy line (307) and ends at a far-end terminating line (308) of the porous structure (303).

The invention discloses a high-compatibility self-calibration lower limb exoskeleton rehabilitation robot which comprises a first lower limb rehabilitation device, a second lower limb rehabilitation device and a hip joint adjusting device. The hip joint exoskeleton assembly comprises three active driving units, and the active driving units with the rotating surfaces corresponding to the horizontal plane are aligned with the rotating center of the hip joint through the remote motion center mechanism with the virtual axis. According to the high-compatibility self-calibration lower limb exoskeleton rehabilitation robot, rotation of a horizontal plane, a coronal plane and a sagittal plane can be completed at the position corresponding to the hip joint of a user, three degrees of freedom of forward flexion / backward extension, adduction / abduction and inward rotation / outward rotation of the hip joint of the human body are achieved respectively, and the exoskeleton robot is aligned to the rotation center of the hip joint of the human body; therefore, the rehabilitation effect of the high-compatibility self-calibration lower limb exoskeleton rehabilitation robot can be improved.

The invention discloses a walking power assisting device with a differential transmission mechanism, which comprises a power module, a waist module and a leg rod module, the power module is horizontally arranged near the lower abdomen in front of a human body, and the rotation axis of the power module is horizontally arranged and is parallel to the coronal plane of the human body; the device comprises a motor module, a speed reducing mechanism, a differential transmission mechanism, a first power output end and a second power output end, the motor module is in transmission connection with the input end of the reducing mechanism, one end of the differential transmission mechanism is in transmission connection with the output end of the reducing mechanism and the first power output end, and the other end is in transmission connection with the second power output end; based on the differential transmission mechanism, rotation of the output end of the speed reducing mechanism can drive the first power output end to rotate in the opposite direction relative to the second power output end. The walking power assisting device has the advantages of being light in weight, small in storage size, small in implementation space, low in complexity, close-fitting, compact and the like.

The invention relates to the technical field of medical instruments, and discloses a scoliosis traction treatment frame and method.The scoliosis traction treatment frame comprises a supporting frame, a traction component, a traction component and a traction component, the traction assembly is connected with the stretching assembly and used for finely stretching the spine at the cervical vertebra position of the patient; the lifting assembly is arranged on the supporting frame, and the lifting assembly is connected with the adjusting assembly and used for adjusting the height of the adjusting assembly; the fixing assembly is connected with the adjusting assembly and used for fixing the waist or the back of the patient. Coronary plane traction correction is carried out on thoracic vertebra and lumbar vertebra coronal scoliosis through the waist movable device, the scoliosis mainly occurs in thoracic lumbar vertebrae, up-down displacement can be achieved, meanwhile, left and right coronal plane pushing can be achieved, and the thoracic lumbar vertebrae scoliosis can be accurately corrected.

The invention relates to a PET / CT (positron emission tomography / computed tomography) image breathing motion artifact correction method based on a triple subgroup convolutional network, and belongs to the field of nuclear medicine imaging. The invention provides a lightweight triple-subgroup convolution kernel, and the convolution kernel focuses on analyzing the rotation and translation characteristics of coronal planes, sagittal planes and cross sections closely related to PET / CT images so as to realize efficient detail analysis under the condition of clinical small samples. And then, a Transform-subgroup convolution fusion encoder and a pyramid network are constructed in combination, a constructed triple subgroup convolution registration network can combine sub-deformation fields of multiple dimensions to obtain a smooth deformation field, and the deformation field is used for spatial distortion transformation to achieve the purpose of artifact correction. According to the method, artifact correction experiment comparison is carried out by using pixel body membrane simulation data and clinical data, the superiority of the method in the aspects of robustness and generalization ability is proved, and the quality of PET / CT images is effectively improved.

The invention discloses a 3D heart image segmentation system based on two visual angles and a semi-supervised attention model, and belongs to the technical field of medical image segmentation. The problem that a traditional 3D medical image segmentation method is poor in segmentation performance is solved. According to the method, a data enhancement mechanism is adopted, that is, a data set is expanded by using a mixed region in the image so as to enhance the performance in a 3D cardiac medical image segmentation task, the 3D cardiac image is segmented from two view angles of a coronal plane and a cross section, and complementary segmentation information of the two view angles can be obtained; the segmentation network designed by the invention more pays more attention to segmentation areas and edge parts, and meanwhile, by adopting a semi-supervised learning mode, the image segmentation performance is ensured in combination with complementary segmentation information of two visual angles under the condition that all 3D heart images do not need to be labeled. The method can be applied to segmentation of the 3D heart image.

The invention belongs to the technical field of robots, and provides a hip joint exoskeleton and a walking assistance control method.The hip joint exoskeleton comprises three active driving units, and a hip joint exoskeleton sagittal plane driving unit is used for achieving forward flexion / backward extension of a human hip joint; the hip joint exoskeleton coronal plane driving unit is used for realizing human hip joint adduction / abduction; the hip joint exoskeleton horizontal plane driving unit is used for realizing inward rotation / outward rotation of the hip joint of the human body; the hip joint exoskeleton sagittal plane driving unit, the hip joint exoskeleton coronal plane driving unit and the hip joint exoskeleton horizontal plane driving unit are connected through the remote rotating center mechanism, so that a rotating plane corresponding to the horizontal plane driving unit is aligned with a hip joint rotating center through a virtual axis. The hip joint exoskeleton is compact in structure and saves space. According to the control method, when the user wears the exoskeleton to walk, the exoskeleton can accurately assist the walking of the user without time delay.

The invention discloses a front walking power assisting device which comprises a power module, a waist module and a leg rod module. The power module is horizontally arranged on the lower abdomen of the human body along the central axis parallel to the coronal plane of the human body. The power module can drive the two ends of the power module to rotate relatively, and the rotating plane is perpendicular to the central axis. The waist module comprises an abdomen frame, the abdomen frame comprises a frame center and two frame wings connected with the frame center, and the frame center is arranged on the lower abdomen of the human body; two wings of the frame extend towards two sides to be near the waist of a human body; the number of the leg rod modules is two, the upper ends of the two leg rod modules are rotationally connected with the two ends of the power module based on corresponding leg rod folding and unfolding shafts, and the leg rod folding and unfolding shafts are parallel to the sagittal plane of the human body and perpendicular to the upper ends of the leg rod modules. The invention has the advantages of light weight, small storage volume, low cost, compactness, close fitting and the like.

Dynamic arm brace assemblies and methods of use are provided herein. An example device includes a torso connection member securable to a torso of a patient, a forearm support member that couples with at least a forearm of an patient, the forearm support member couples with the torso connection member so as to fix an elbow of the patient proximate the torso, the forearm support member being pivotally coupled to the torso connection member to allow for an angle between the forearm support member and a coronal plane of the patient, and a dynamic tensioning assembly that externally rotates the forearm support member and selectively sets the angle so as to stretch a shoulder capsule (capsule and adjacent tissue(s)) affected with adhesive capsulitis, reducing the adhesive capsulitis.

A method for constructing a clinically-relevant large animal model of traumatic optic neuropathy, employing a goat with orbital anatomy and optic nerve structure similar to humans as a model animal, overing the defects existing in other animals as TON model animals. The target model goat is obtained by screening parameters, such as a maximum transverse diameter of a coronal plane of a body of sphenoid bone and a wall width of a sphenoid bone, thereby facilitating the exposure of an optic nerve in a optic-canal segment under a nasal endoscopic surgery and quantitative injury. With the optic nerve injury animal model, the clinical TON pathogenesis can be explored by studying the optic nerve at the injured optic canal. In the prepared TON animal model, the injured optic nerve is closer to the brain, which is beneficial to rebuilding the synaptic connection.

A patient interface may include a plenum chamber pressurisable to a therapeutic pressure; a seal-forming structure constructed and arranged to form a seal with a region of the patient's face; a positioning and stabilising structure to provide an elastic force to hold the seal-forming structure on the patient's head, the positioning and stabilising structure may include a tie; a vent structure; a decoupling structure configured to provide a fluid connection between the plenum chamber and an air circuit for the flow of air at the therapeutic pressure for breathing by the patient; and a frame having at least one tie attachment structure to receive the tie, wherein the frame is configured to be resiliently movable in any direction having at least one of a component parallel to the patient's sagittal plane, a component parallel to the patient's coronal plane, a component parallel to the patient's Frankfort horizontal plane.

The present invention relates to a tracking system (10) comprising: an emitting device (12) configured to establish a measurement volume within at least a part of a patients body, the patients body having a median plane, a transverse plane, and a coronal plane; a movable sensor (14) which is movable within the measurement volume; a first reference sensor (16) establishing a global coordinate system within the measurement volume, the global coordinate system having an origin, an x-axis, a y-axis and a z-axis; and a controller (18). The controller (18) is configured to detect real-time positions of the movable sensor (14) within the global coordinate system, to set the origin of the global coordinate system as an anchor point in relation to the patients body, to span a first reference plane in direction of the x-axis and the z-axis being parallel to the median plane, to span a second reference plane in direction of the y-axis and the z-axis being parallel to the transverse plane, to span a third reference plane in direction of the x-axis and the y-axis being parallel to the coronal plane, and preferably to translate in parallel at least one of the first reference plane, the second reference plane and the third reference plane based on an expected movement path of the movable sensor.

The invention relates to an extraocular muscle three-dimensional reconstruction and extraocular muscle volume calculation method, which comprises the following steps: S1, acquiring medical image data and an image containing coronal plane information of eyeballs and surrounding tissues thereof; s2, performing deep learning prediction on the obtained medical image data by using an ESNet model to obtain an extraocular muscle segmentation result; s3, obtaining an accurate extraocular muscle image according to the extraocular muscle segmentation result; s4, performing extraocular muscle three-dimensional reconstruction by using an MPR algorithm according to the obtained extraocular muscle image, and establishing an extraocular muscle three-dimensional model; and S5, calculating the volume of each extraocular muscle according to the extraocular muscle image obtained in the S3. According to the extraocular muscle three-dimensional reconstruction and extraocular muscle volume calculation method, deep learning prediction is carried out on the obtained medical image data through the ESNet model to obtain an accurate extraocular muscle image, three-dimensional reconstruction and volume calculation are carried out according to the extraocular muscle image, the extraocular muscle reconstructed through the method is accurate in reduction degree, and the method is suitable for large-scale popularization and application. Diagnosis of strabismus is assisted, and research of extraocular muscle volume related diseases is facilitated.

The present invention discloses an X-ray image three-dimensional reconstruction method, system, electronic device and storage medium. The method includes using two parallel encoder-decoder networks to perform three-dimensional reconstruction on the coronal plane and sagittal plane of two-dimensional X-ray images respectively. Among them, in the encoder network, a local feature enhancement module is used to extract two-dimensional feature maps of the coronal plane X-ray image and the sagittal plane X-ray image respectively; an attention interaction module is used to perform information exchange and fusion on the two-dimensional feature maps of the coronal plane X-ray image and the sagittal plane X-ray image; a dimension conversion unit is used to convert the two-dimensional feature map processed by the attention interaction module into a three-dimensional feature map; in the decoder network, a 3D transposed convolution module is used to obtain a three-dimensional image by gradually magnifying the three-dimensional feature map and performing three-dimensional convolution operations. The method of the present invention can complete the reconstruction of three-dimensional CT using only two X-ray pictures, reducing the radiation received by patients.

A method facilitates the treatment of the spine of a patient by providing simultaneous access through at least a first opening and a second opening formed in the patient. For example, the method can include the acts of positioning the patient on a surgical table, providing the first opening into a posterior portion of the patient, providing the second opening into a lateral portion of the patient, inserting a first device through the first opening into the patient to contact the spine in a first direction that is transverse to the coronal plane of the patient, and inserting a second device through the second opening into the patient to contact the spine in a second direction that is transverse to the sagittal plane of the patient, where the first and second openings are accessible simultaneously, and, when the first and second devises are inserted into the patient, the position of the patient is stationary with respect to a portion of the table.

The utility model discloses a calcaneus locking plate and a calcaneus fixing device, and belongs to the technical field of medical instruments.The calcaneus locking plate comprises a plurality of locking parts, the multiple locking parts are arranged at intervals, and the locking parts are provided with locking holes; each connecting part is arranged between the at least two locking parts and is respectively connected with the at least two locking parts; wherein the locking hole of at least one locking part is a first locking hole, the first locking hole is used for connecting the locking part with the sustentaculum tali, and the first locking hole is provided with a first central axis AA '; the locking part has a connecting state of being connected to the sustentaculum tali, in the connecting state, a first included angle alpha is formed between the first central axis AA'and the coronal plane YY ', a second included angle beta is formed between the first central axis AA' and the cross section XX ', alpha is larger than or equal to 14 degrees and smaller than or equal to 18 degrees, and beta is larger than or equal to 3 degrees and smaller than or equal to 6 degrees. According to the calcaneus locking plate, the sustentaculum tali can be accurately positioned through the first locking holes in clinic, the locking screws are accurately guided, the accuracy of connecting the sustentaculum tali is improved, and the operation efficiency is improved.

The invention discloses a foldable and portable sitting position corrector capable of continuously resisting scoliosis, and relates to the technical field of spine correction. The strength applied by various traditional braces or orthotics is fixed, the body is inconvenient and uncomfortable to move after being worn, and the life quality is influenced. Therefore, the sitting position corrector which is light in overall structure, foldable and portable, can be placed on a stool or a chair at home or at school, and can be used for correcting the sitting position when children attend the class and do homework after school is designed. Wherein the universal adjusting device changes the force application direction and can act on a sagittal plane and a coronal plane at the same time, the honeycomb soft cushion on one side is heightened to enable the pelvis to return, and the correction effect is achieved. A continuous force application device is additionally arranged, force of an existing brace or orthosis is fixed, a new thought is provided, force is transmitted through a spring, pressure borne by a lateral bending part is continuous and soft, and comfort is improved. Meanwhile, the patient can use the corrector to actively train the scoliosis depressed muscles to achieve the correction effect.

The application belongs to the field of medical instrument imaging diagnosis equipment quality detection, and particularly relates to a phantom and a method for coronal plane transmission detection of a three-dimensional ultrasonic imaging device. The phantom comprises: an upper panel, an acoustic window, a target group, and an aggregate formed by background ultrasonic tissue simulation material. The upper panel is located above the acoustic window, and the upper panel and the acoustic window form an inner cavity after being connected. The target group and the aggregate formed by the background ultrasonic tissue simulation material are located in the inner cavity. When the coronal plane transmission imaging performance is detected, the phantom is suspended in the imaging area of a hemispherical ultrasonic array, and a degassed water body is also contained in the imaging area. Each target in the target group extends along the vertical direction and is perpendicular to the coronal plane of the breast to be imaged. In this way, the convenience and accuracy of the coronal plane transmission imaging performance detection are improved, and the utility is good.

This invention discloses a method for preparing a simulated heart model and the simulated heart model itself. The method for preparing the simulated heart model includes: dividing a digital heart model into two parts along its coronal plane; preparing corresponding molding molds according to the structural characteristics of the two parts, each molding mold including an outer molding mold and an inner cavity molding mold; applying silicone to the molding surfaces of the outer molding mold and the inner cavity molding mold to form the endocardium and epicardium; applying silicone to the portion of the inner cavity molding mold used for molding the valve to form the valve; assembling the outer molding mold and the inner cavity molding mold to form a cavity; sequentially injecting silicone of corresponding hardness into the regions of the cavity used for molding the atrial myocardium, interatrial septal myocardium, ventricular myocardium, and interventricular septal myocardium to form heart model halves; and bonding the heart model halves corresponding to the two molding molds together to obtain the simulated heart model.