[A methodological study on the detection of myocardial ultrasonic integrated backscatter]

The cyclic fluctuation of ultrasonic integrated backscatter(IB) of myocardium has been found to be a potential indicator of clinical significance in the diagnosis of myocardial ischemia. To investigate the feasibility of such a technique, a clinical IB testing system is established in our laboratory. Six male subjects with no history of heart diseases were tested by using this system. Based on the clinical data obtained during the tests, the effects of echo position, bandwidth, and different calculation algorithms on IB value were analyzed and compared. The results are available to provide a guideline for the design of instrumentation for IB detection.