Ultrasonic imaging method and device

Abstract

The invention relates to an ultrasonic imaging method and device; the method comprises the steps: acquiring N*K first time delay data t n, k; acquiring D*K second time delay data t d, k; transforming a matrix corresponding to an ultrasonic echo radio frequency digital signal into a vector s with length of D*K; and confirming the matrix M by means of a second time delay data t d, k corresponding to a data point d in a kth channel in the vector s and the corresponding first time delay data t n, k in the same channel, wherein the matrix M is a sparse matrix; an equation set is established according to the vector s and the matrix M; the equation set is s=MI, in which I represents the vector of scatterers with scattering intensity distribution and length of N; the equation set is resolved by means of a compressed sensing algorithm and a vector I is obtained; and a to-be-formed ultrasonic image is determined according to the vector I.

Description

technical field [0001] The invention relates to the technical field of medical imaging, in particular to an ultrasonic imaging method and device. Background technique [0002] After more than half a century of development, medical ultrasound imaging technology has become the most widely used imaging technology in clinical medicine and clinical diagnosis of various diseases due to its advantages of strong real-time performance, high identification of soft tissues, ease of use and good economy. the preferred method for . [0003] The frame rate of traditional ultrasound imaging is very low, usually between a dozen frames to dozens of frames. For applications such as high-hardness tissue elasticity imaging, high-speed blood flow imaging of large arteries, cardiac imaging, and tracking of changes in the state of ultrasound contrast agents that require extremely high frame rates due to the rapid movement of imaging targets, the frame rate of traditional ultrasound imaging has be...

AI Technical Summary

Problems solved by technology

However, the multi-angle coherent stacking imaging method is equivalent to reducing the frame rate again. For example, the ordinary ultrasonic plane wave imaging method can achieve a frame rate of 10,000 frames per second, but in order to improve the resolution and contrast of the image, multiple Angle-coherent superposition imaging method synthesizes an image from the emission / reception results of 51 angles, and the frame rate drops to less than 200 frames per second

Therefore, the scope of application of the multi-angle coherent stacking imaging method is severely restricted

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