Two dimension complex interrelative biological tissue displacement evaluating method

A technology of cross-correlation and cross-correlation function, applied in ultrasonic/sonic/infrasonic Permian technology, ultrasonic/sonic/infrasound image/data processing, organ motion/change detection, etc. , large influence, low signal-to-noise ratio of strain distribution estimation, etc.
CN1586411AInactive Publication Date: 2005-03-02TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2005-03-02
Estimated Expiration
Not applicable · inactive patent

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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.
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Description

technical field

[0001] The invention belongs to the technical field of ultrasonic elastography, in particular to a method for estimating the displacement of biological tissues. Background technique

[0002] Changes in the elastic modulus of biological tissues are usually related to their pathological phenomena. For example, malignant pathological lesions, such as scirrhous breast cancer, prostate cancer, thyroid cancer, and liver metastases, usually appear as hard nodules. Sclerocarcinoma of the breast is the most common form of breast cancer, accounting for about three-quarters of all breast cancers, and presents as a dense, hard mass due to its increased stroma density. While other types of breast cancer, such as intraductal carcinoma and papilloma, present as soft tissue, benign fibrocystic breast disease rarely presents as a hard mass.

[0003] The elastic modulus information of biological tissues has important reference value for the diagnosis process of diseases. Ho...

Claims

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