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Echogenicity Quantification Method and Calibration Method for Ultrasonic Device Using Echogenicity Index
专利权人:
发明人:
CHANG, KING JEN,张金坚,張金堅,CHEN, ARGON,陈正刚,陳正剛,CHEN, CHIUNG NEIN,陈炯年,陳炯年,WANG, YU HSIN,王昱欣,王昱欣,HUANG, KUO CHEN,黄国祯,黃國禎,WU, MING HSUN,吴明勳,吳明勳
申请号:
TW103141586
公开号:
TWI577341B
申请日:
2014.12.01
申请国别(地区):
TW
年份:
2017
代理人:
摘要:
An echogenicity quantification method and a calibration method for ultrasonic device using echogenicity index are disclosed. The echogenicity quantification method includes: receiving an ultrasonic image which comprises a plurality of grayscale pixels choosing a region of interest (ROI) calculating the values of the grayscale pixels in the ROI to obtain average value and a standard deviation excluding pixels in ROI with the grayscale value smaller than the product of a first scaling factor and the standard deviation, and pixels in ROI with the grayscale value larger than the sum of the average value and the product of a second scaling factor and the regional standard deviation averaging the values of the remaining grayscale pixels in ROI to obtain an average value of interest choosing a reference region averaging the values of the remaining grayscale pixels in ROI to obtain an average value of reference and calculating the difference between the average value of interest and the average value of reference to obtain a echogenicity index.本發明提供一種回音特徵的量化方法及使用回音特徵量化數值之超音波裝置校正方法。回音特徵的量化方法包含:接收一超音波影像,該超音波影像包含複數個具有灰階值之像素點;圈選該超音波影像中一興趣區域;統計該些像素點於該興趣區域像素點之灰階值,得到一平均值及一標準差值;排除興趣區域中灰階值小於一第一倍率值乘以該標準差值之該些像素點,及灰階值大於該平均值加上一第二倍率值乘以該標準差值之該些像素點;平均該興趣區域剩餘像素點之灰階值,得到一興趣平均值;圈選該超音波影像中與該興趣區域不重疊之一參考區域;平均該參考區域剩餘像素點之灰階值,得到一參考平均值;以及計算該興趣平均值與該參考平均值之差值,得到一回音指標。S100‧‧‧回音特徵的量化方法S110~S180‧‧‧步驟
来源网站:
中国工程科技知识中心
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