✦ LIBER ✦

Ultrasonic Tissue Characterization for Coronary Care Unit Patients with Acute Myocardial Infarction

✍ Scribed by Lung-Chun Lin; Chau-Chung Wu; Yi-Lwun Ho; Chii-Wann Lin; Wen-Jone Chen; Ming-Fong Chen; Chiau-Song Liau; Yuan-Teh Lee

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 464 KB
Volume: 24
Category: Article
ISSN: 0301-5629
DOI: 10.1016/s0301-5629(97)00265-2

No coin nor oath required. For personal study only.

✦ Synopsis

The ultrasonic integrated backscatter of myocardium changes in infarction and ischemia. On the third day after acute myocardial infarction, 30 patients underwent ultrasonic tissue characterization from the parasternal short-axis view. With a composite parameter, the phase-weighted variation, sensitivity, specificity, and accuracy for diagnosing multivessel coronary artery disease were 84.6%, 52.9% and 66.6%, respectively. Using 67°as the cutoff value for the phase deviation of the backscatter power curve, the recanalization of the infarct-related artery could be detected with a positive predictive value of 77.7% and a negative predictive value of 66.6%. Ultrasonic tissue characterization is a feasible technique for detecting the multivessel coronary artery diseases and the recanalization of infarct-related artery for patients with acute myocardial infarction. The diminished cardiac cycle-dependent variation in integrated backscatter and increased phase deviation can differentiate patent coronary arteries from those coronary arteries with anatomically significant stenoses.

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