公开(公告)号：US20210386398A1

公开(公告)日：2021-12-16

申请号：US17274789

申请日：2019-10-24

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ming YUCHI ,  Mingyue DING ,  Qiude ZHANG ,  Junjie SONG ,  Kuolin LIU ,  Zhaohui LIU ,  Liang ZHOU ,  Zhaohui QUAN ,  Xiaoyue FANG ,  Yun WU ,  Quan ZHOU

IPC: A61B8/14 ,  A61B8/00 ,  A61B8/08

Abstract: A spiral ultrasonic tomography imaging method and system are provided. The method is to use synchronous rotation of an ultrasonic probe or cyclic switching of emission array elements in the ultrasonic probe under the premise of a uniform displacement of the ultrasonic probe along the Z axis, so that the change trajectory of the positions of emission array elements over time in a three-dimensional space at each ultrasonic emission time is distributed along a spiral line or a curve. During the process of the uniform displacement of the ultrasonic probe along the Z axis, the ultrasonic probe emits ultrasonic waves and receives and collects echo data. The collected echo data is stored and post-processed to realize ultrasonic tomography imaging of an object. The spiral ultrasonic tomography three-dimensional scanning method and the corresponding system realize rapid continuous uninterrupted data acquisition to ensure that higher spatial resolution in the Z-axis direction.

公开(公告)号：US20210236095A1

公开(公告)日：2021-08-05

申请号：US16968151

申请日：2019-04-28

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ming YUCHI ,  Mingyue DING ,  Xiaoyue FANG ,  Yun WU ,  Junjie SONG ,  Liang ZHOU ,  Qiude ZHANG ,  Kuolin LIU

IPC: A61B8/08 ,  A61B8/15

Abstract: The disclosure is related to the technical field of functional imaging, and discloses an ultrasound CT image reconstruction method and system based on ray theory, wherein the method includes an ultrasound CT sound speed reconstruction method and an ultrasound CT attenuation coefficient reconstruction method based on ray theory; the ultrasound CT sound speed reconstruction method based on ray theory includes: (1) extraction of the difference in travel time; (2) calculate the ray path that the acoustic wave passes from the transmitting array element to the receiving array element; (3) solution for inverse problem: by using the quasi-Newton method to solve the path-slowness-time equation system, the speed reconstruction value vector of the object to be measured can be obtained.