1. Diagnosis of Intraplaque Hemorrhage by High-Definition Intravascular Ultrasound and Optical Coherence Tomography

    Diagnosis of Intraplaque Hemorrhage by High-Definition Intravascular Ultrasound and Optical Coherence Tomography

    A 67-year-old woman, a heavy smoker and with hypothyroidism, presented with a non–STsegment elevation myocardial infarction with negative T waves on the inferior leads. Coronary angiography revealed a focal stenosis in the mid right coronary artery (arrow in Figure 1A) but no other coronary lesions. High-definition (60-MHz) intravascular ultrasound (IVUS) (ACIST Medical Systems, Eden Prairie, Minnesota) revealed a large hyperechoic noncalcific plaque encompassing a well-delineated, crescent-shaped area showing a striking hypoechogenicity (echolucent “black” area) (yellow asterisks in Figures 1B and 1C [white asterisk denotes wire artifact]). The immediately adjacent plaque had a more reflective pattern with marked speckling (Figures ...

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