437 Ultrasonic myocardial tissue characterization by cyclic variation of integrated backscatter in patients with aortic stenosis
نویسندگان
چکیده
منابع مشابه
Ultrasonic tissue characterization with integrated backscatter. Acute myocardial ischemia, reperfusion, and stunned myocardium in patients.
We have previously shown in studies of experimental animals that myocardium exhibits a cardiac cycle-dependent variation of integrated backscatter that reflects regional myocardial contractile performance and that is blunted promptly after arterial occlusion and recovers after reperfusion. To define the clinical utility of ultrasonic tissue characterization with integrated backscatter for detec...
متن کاملSevere aortic stenosis and myocardial function: diagnostic and prognostic usefulness of ultrasonic integrated backscatter analysis.
BACKGROUND The aim of this study was to assess the myocardial reflectivity pattern in severe aortic valve stenosis through the use of integrated backscatter (IBS) analysis. Patients with aortic stenosis (AS) were carefully selected in the Department of Cardiology. METHODS AND RESULTS Thirty-five subjects (AS: valve orifice < or =1 cm2; 12 female; mean age, 71.8+/-6.2 years) and 25 healthy sub...
متن کاملLABORATORY INVESTIGATION TISSUE CHARACTERIZATION The dependence of myocardial ultrasonic integrated backscatter on contractile performance*
We have recently shown that the cardiac cycle-dependent variation in myocardial ultrasonic integrated backscatter is blunted with regional ischemia in dogs. To determine if global and intramural regional myocardial contractile performance can be quantified by integrated backscatter, we analyzed ultrasonic responses after induction of increased and decreased contractility in five dogs. A recentl...
متن کاملIntegrated backscatter in Becker muscular dystrophy patients with functionally normal heart: myocardial ultrasound tissue characterization study.
ortality. Furthermore, several non-randomized studies have hown significantly better survival in patients with cardiogenic hock treated with primary angioplasty and abciximab (4). Recent investigations have shown that time to treatment is a elevant issue in primary angioplasty and has a significant impact n mortality (5). Therefore, early administration of pharmacologic herapy may improve earli...
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ژورنال
عنوان ژورنال: European Journal of Echocardiography
سال: 2006
ISSN: 1525-2167
DOI: 10.1016/s1525-2167(06)60227-8