10 results about "Ultrasound elastography" patented technology

The application relates to the technical field of medical ultrasonic imaging and digital image processing, in particular to an ultrasonic elasticity image denoising and enhancing method, which comprises the following steps: acquiring original ultrasonic elasticity imaging data to be processed, and constructing a structure tensor matrix reflecting local texture directions; solving the anisotropic coherence degree of each pixel point, obtaining a structure attribute discrimination result, and constructing a structure confidence atlas; collecting the point spread function characteristics of an ultrasonic imaging system, establishing a speckle noise statistical model; obtaining a local smoothing coefficient of the first iteration, and performing anisotropic diffusion correction on an initial elasticity distribution matrix to obtain a first modified elasticity image matrix, and updating the structure confidence atlas to obtain a final denoised and enhanced target elasticity image; the application effectively suppresses multiplicative granular speckles, eliminates the ladder effect or artifacts easily generated by conventional methods, and significantly improves the image signal-to-noise ratio.

The invention relates to the field of image enhancement, in particular to an intelligent image enhancement method for liver ultrasonic elastography. The method comprises the steps that in each respiratory cycle, multiple frames of images of the liver of a patient are collected; for each frame of image, determining the similarity between the frame of image and each frame of image according to the contour gradient relative difference and contour deviation degree between the frame of image and the liver region of each frame of image in the adjacent respiratory cycle; clustering the liver region of each frame of image to obtain a plurality of clusters, and obtaining the definition weight of each cluster according to the gradient amplitude and the movement speed parameter in the cluster; according to the difference between the hardening coefficients of each cluster and the corresponding cluster in the corresponding similar image, the similarity between the frame image and the corresponding similar image and the definition weight mean value, a respiration influence coefficient is obtained; and according to the multi-cluster respiration influence coefficient of each frame of image, carrying out image enhancement on the frame of image to obtain an enhanced image. The image definition of the focus area can be improved.

The invention relates to an ultrasonic elastography system and method based on a local least square fitting operator. Comprising the following steps: acquiring a plurality of wave fields under a target frequency based on spatio-temporal data of ultrasonic shear wave propagation; obtaining a relative coordinate matrix based on the fitting matrix; obtaining a fitting operator matrix based on the relative coordinate matrix and a least square principle; for each pixel of the complex wave field, extracting a local complex data block taking the pixel as a center; acquiring relative phase vectors respectively corresponding to the plurality of local complex data blocks; on the basis of the fitting operator matrix and the relative phase vectors corresponding to the multiple local complex data blocks, fitting wave number components corresponding to the multiple local complex data blocks are obtained; and on the basis of the fitting wave number components corresponding to the plurality of local complex data blocks, shear wave velocities corresponding to the plurality of local complex data blocks are obtained, and then an elastic graph is obtained. According to the method, random noise can be effectively suppressed in a phase gradient calculation stage, and a fine edge structure of a tissue is reserved.

The utility model relates to the technical field of ultrasonic elastography measurement auxiliary scales, in particular to an ultrasonic elastography measurement auxiliary scale which is convenient to use and comprises a positioning measurement slender rod, a sliding positioning groove is formed in the middle of the positioning measurement slender rod, and a plurality of positioning mark blocks are arranged in the middle of the sliding positioning groove. Sliding positioning blocks are arranged on the left portion of the positioning gauge block, each sliding positioning block is matched with the corresponding sliding positioning groove, a threaded hole is formed in the top end of each sliding positioning block, a positioning bolt is arranged at the top end of each threaded hole, each positioning bolt is matched with the corresponding threaded hole, and a positioning suction cup is arranged at the bottom end of the positioning measuring slender rod.

This application relates to a system and method for generating and processing ultrasound elastography images. The system includes: an ultrasound image acquisition module for acquiring ultrasound images of living tissue at predetermined locations; an ultrasound elastography image generation module, communicatively connected to the ultrasound image acquisition module, for generating ultrasound elastography images based on the USE-GAN image generation model; a display module for displaying the ultrasound elastography images and the ultrasound image; a manual review module for pre-evaluating the elasticity score of the ultrasound elastography images according to an algorithm program, and determining the elasticity score of the ultrasound elastography images generated by the ultrasound elastography image generation module after manual verification; and an output module for outputting the elasticity score of the ultrasound elastography images determined by the manual review module and a manually determined conclusive report related to the elasticity score. The system and method of this application can be used for auxiliary diagnosis of tissues and organs such as the thyroid, liver, breast, and prostate when ultrasound elastography assessment is required.

This application relates to the field of image enhancement, specifically to an intelligent image enhancement method for liver ultrasound elastography. The method includes: acquiring multiple frames of images of the patient's liver during each respiratory cycle; for each frame, determining the similarity between the frame and other frames based on the relative difference and deviation of the contour gradient of the liver region between the frame and adjacent respiratory cycles; clustering the liver region of each frame to obtain multiple clusters, and obtaining a sharpness weight for each cluster based on the gradient amplitude and motion velocity parameters; obtaining a respiratory influence coefficient based on the difference in hardening coefficient between each cluster and the corresponding cluster in similar images, the similarity between the frame and the corresponding similar images, and the mean of the sharpness weights; and enhancing the frame based on the respiratory influence coefficients of the multiple clusters in each frame to obtain the enhanced image. This application can improve the image sharpness of lesion areas.

The invention relates to the technical field of medical image navigation puncture, in particular to a lymph node biopsy puncture monitoring system and a biopsy puncture sampling method.The lymph node biopsy puncture monitoring method comprises the steps that real-time ultrasound, elastography and color Doppler image data streams of a lymph node area are obtained and fused, and the real-time ultrasound, elastography and color Doppler image data streams of the lymph node area are obtained; and generating a comprehensive feature map integrating the lymph node boundary contour, the internal hardness distribution and the blood vessel walking path. And calculating a safe puncture path and a target spot which avoid the blood vessel and pass through the target hardness region based on the feature map. In the puncture process, the needle inserting track is tracked in real time and dynamically compared with a preset path, and deviation warning and correction guidance are automatically generated. And when the needle point reaches the target spot, triggering sampling, and continuously monitoring the sampling area. According to the method, through multi-source information fusion and real-time navigation deviation correction, the accuracy of puncture sampling and the operation safety are improved.

The present application relates to the technical field of digital twinning, and particularly provides a kind of based on digital twinning's intestinal microorganism dynamic detection method and system, method contains making different hydrophobicity microorganism in turn separate from magnetic control capture area and collect according to the order of separation, obtain the sequence of microbial components arranged according to the hydrophobicity gradient of microbial cell membrane;After temperature threshold sequencing, the phase transition characteristic vector corresponding to each component is generated, and the liquid crystal phase transition map of microbial community is formed by combining the phase transition characteristic vectors of all components;The liquid crystal phase transition map is input into the intestinal wall multilayer mechanical parameter program reconstructed in advance by ultrasonic elastography, and each microbial component is distributed to the matching intestinal axial region, and the functional zone separation twinning mapping of microbial community along the length direction of intestine is generated from the distribution relationship.The present application realizes the continuous analysis process from the physical and chemical separation of microorganism to the thermodynamic characterization of group, and then to the dynamic matching of intestinal mechanical environment.

The application discloses a percutaneous intervention ultrasonic elastic imaging catheter needle, which comprises an outer catheter (1), a puncture tip (101) at the front end of the outer catheter (1), an ultrasonic assembly accommodating cavity (102) at the position of the outer catheter (1) close to the puncture tip (101), an ultrasonic window (103) at the side position of the ultrasonic assembly accommodating cavity (102), the outer catheter (1) being provided with a first channel (104) arranged along the axial direction, the front end of the first channel (104) being connected with the ultrasonic assembly accommodating cavity (102), an ultrasonic assembly (2) arranged in the ultrasonic assembly accommodating cavity (102), the scanning sound beam surface of the ultrasonic assembly (2) corresponding to the position of the ultrasonic window (103), and a negative pressure passage arranged for being connected with a negative pressure providing device (9) to form / release negative pressure between the ultrasonic assembly (2) and in-vivo tissue (7). The percutaneous intervention ultrasonic elastic imaging catheter needle can realize instantaneous negative suction / release of the tissue near the ultrasonic assembly (2) by controlling the start / stop of the negative pressure in the first channel (104), and can realize the ultrasonic elastic imaging function.

The invention relates to the field of ultrasonic diagnosis, and discloses an ultrasonic imaging elastic parameter display method, device and equipment and a storage medium, the method comprises the following steps: applying pressure to current tissue through a target probe on ultrasonic diagnosis equipment to obtain ultrasonic images of the current tissue under different pressures; determining a processing strategy of the ultrasonic image according to the tissue type of the current tissue; processing the ultrasonic images under different pressures based on the processing strategy to obtain a tissue boundary and an elastic parameter; and displaying the ultrasonic image, the tissue boundary and the elastic parameter to a feedback system. According to the invention, the problem of lack of tissue elasticity meticulous quantification in the existing ultrasonic elastography technology is solved.