Biological tissue displacement evaluating method using two kinds of size |
Title： |
| Biological tissue displacement evaluating method using two kinds of size |
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Application Number： |
200410056907 |
Application Date： |
2004/08/20 |
Announcement Date： |
2005/03/02 |
Pub. Date： |
2007/05/02 |
Publication Number： |
1586409 |
Announcement Number： |
1313055 |
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 |
Key Words： |
Biological tissue displacement, evaluating method, two kinds of size |
Abstract： |
The present invention belongs to the field of supersonic elastic imaging technology. The two size biological tissue displacement estimating method includes: taking the data d1 of the size Ta in the first scanning line in the 2D RF signal before tissue compression, finding the cross correlation function of the data d1 and the scanning data after tissue compression, taking data e1 in the size Tb at the center of data section d1, finding the cross correlation function of the data e1 and the scanning line data to obtain the position t''1 corresponding to maximum data, and finally finding out the fine regulated displacement t1 of the small data section d1 to obtain the tissue displacement evaluation corresponding to the scanning lines. In case of great tissue compression amount, the present invention will combine the displacement estimation methods with great size and small size and thus has raised tissue displacement estimation precision. |
Claim： |
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Priority： |
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PCT： |
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