Abstract:

Objective To describe the characteristics of ultrasonic integrated backscatter (IBS) of cardiac blood in children with dilated cardiomyopathy (DCM). Methods Philips Sonos 7500 equipped with an acoustic densitometry software system was used. The subjects included 20 children with DCM and 20 normal children. The IBS parameters of the cardiac blood were collected. Results Compared to normal children, the cyclic variation of integrated backscatter (CVIB) of blood in the left atria (LA), left ventricle (LV), and right ventricle (RV) were decreased significantly (P<0.01) in children. There was significant difference between the blood AII and CVIB in different segments of the LV. Conclusion There is significant difference in IBS parameters of blood between children with DCM and normal children. Blood in LV is not a suitable calibration reference in integrated backscatter analysis for patients with DCM.

Key words: dilated cardiomyopathy, echocardiography, integrated backscatter, blood