Two dimension complex interrelative biological tissue displacement evaluating method |
Title： |
| Two dimension complex interrelative biological tissue displacement evaluating method |
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Application Number： |
200410070183 |
Application Date： |
2004/08/06 |
Announcement Date： |
2005/03/02 |
Pub. Date： |
2007/05/02 |
Publication Number： |
1586411 |
Announcement Number： |
1313056 |
Grant Date： |
2007-5-2 |
Granted Pub. Date： |
2007-5-2 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
A61B 8/08 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Bai Jing, Luo Jianwen, Ding Chuxiong |
Key Words： |
Two dimension, complex interrelative, biological tissue displacement, evaluating method |
Abstract： |
The present invention belongs to the field of supersonic elastic imaging technology. The 2D complex cross correlative biological tissue displacement estimating method includes: taking the (m+1)-th scanning line data separately from the 2D RF signals before and after tissue compression, with m being the 2D cross correlative complex coefficient, and taking several data sections of length T to find out the cross correlative functions of the data sections and the scanning line data after compression with maximum value in the position corresponding to the displacement of the data section, to weighted average the cross correlative functions and to obtain the 2D complex cross correlative function; similarly finding out tissue displacement estimation corresponding to various scanning line data. The present invention has decreased error caused by transverse tissue displacement and raised precision of longitudinal tissue displacement estimation. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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