Tianxu ZHANG,Zhenghua HUANG,Lihua DENG,Yaozong ZHANG,Qiong SONG
申请号：
US14960461
公开号：
US20160189394A1
申请日:
2015.12.07
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A method for extracting motion parameters from angiography images using a multi-parameter model. The method includes: 1) extracting I vascular structural feature points automatically from a medical image of an angiography image sequence, and auto-tracking the feature points respectively in the angiography image sequence to obtain a tracking sequence of each feature point 2) performing a discrete Fourier transformation on the tracking sequence of each feature point to obtain a discrete Fourier transformation result initializing an iterative parameter, and obtaining amplitude range and frequency range of each frequency point of the discrete Fourier transformation result 3) performing a Fourier transformation on a tracking sequence of each frequency point in the amplitude range and the frequency range thereof to obtain Fourier transformation results and 4) performing an inverse Fourier transformation on the Fourier transformation results, and obtaining an estimated minimum mean square error of each frequency point.
