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Clinical Study of Ultrasonic Tissue Characterizaton with Integrated Backscatter and Echo Intensity in the Diagnosis of Acute Myocardial Infarction
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作者 王志刚 冉海涛 +7 位作者 黄晶 陈庆伟 邹建中 苏海兵 蒲世玉 凌智瑜 陈永新 何明菊 《South China Journal of Cardiology》 CAS 2001年第2期106-109,共4页
Objectives The purpose of this study was to determine if the ultrasonic integrated backscatter and echo intensity could be used in clinical diagnosis of acute myocardial infarction. Methods and Results Within 2 weeks ... Objectives The purpose of this study was to determine if the ultrasonic integrated backscatter and echo intensity could be used in clinical diagnosis of acute myocardial infarction. Methods and Results Within 2 weeks after acute myocardial infarction,35 patients underwent ultrasonic tissue characterization from the papillary short - axis view. The cyclic variation of integrated backscatter and echo intensity of three different myocardial regions perfused by left anterior descending coronary artery, left circumflex coronary and right coronary were measured . The value of cyclic variation of integrated backscatter and integrated backscatter and echo intensity≤ half of the highest value of three different myocardial regions on a same view were define as the criteria for diagnosing acute myocardial infarction , and the results were compared with coronary angiography. The sensitivity of diagnosing acute myocardial infarction by both Ultrasonic tissue characterization with integrated backscatter and echo intensity were 91. 43 % . The location of myocardial infarction detected by this tech-nique corresponded with the damaged myocardial region determined by coronary angiography. Conclusions Ultrasonic tissue characterization with integrated backscatter and echo intensity could clinically be used as a noninvasive approach in the diagnosis of acute myocardial infarction. 展开更多
关键词 Integrated backscatter echo intensity Myocardial infarction
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Classification of flaw by adaptive filtering deconvolution of ultrasonic backscattering echo 被引量:1
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作者 JIAN Xiaoming LI Mingxuan(Institute of Acoustics, Chinese Academy of Sciences Beijing 100080) 《Chinese Journal of Acoustics》 1999年第2期171-179,共9页
A convolution model of flaw scattering echoes and an adaptive filtering deconvolution method are presented. The effect of the method is analyzed by simulating a given system. By deconvolution, the influence of the tra... A convolution model of flaw scattering echoes and an adaptive filtering deconvolution method are presented. The effect of the method is analyzed by simulating a given system. By deconvolution, the influence of the transducer on echoes is reduced greatly and the flaw features stand out more clearly in the deconvolved echoes than in flaw echoes themselves. flaw echo signals of 18 flaw samples are processed by adaptive filtering deconvolution. As a result, flaws are classified successfully 展开更多
关键词 Classification of flaw by adaptive filtering deconvolution of ultrasonic backscattering echo
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