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Radiology, Vol 193, 195-201, Copyright © 1994 by Radiological Society of North America

ARTICLES

Doppler enhancement with SH U 508A in multiple vascular regions

KQ Schwarz, H Becher, C Schimpfky, D Vorwerk, U Bogdahn and R Schlief
Cardiology Unit, University of Rochester Medical Center, NY 14642.

PURPOSE: To determine the magnitude and duration of peripheral vascular and cardiac Doppler signal enhancement after intravenous administration of contrast agent SH U 508A. MATERIALS AND METHODS: Suboptimal cardiac or peripheral vascular Doppler examinations were evaluated. A total of 75 intravenous bolus injections were made in 30 patients. Spectral audio Doppler intensity was measured throughout the duration of contrast effect. RESULTS: No clinically relevant adverse effects were noted, and Doppler enhancement was apparent in all cases. The diagnostic confidence of the investigators when scored before and after Doppler enhancement improved from 35% to 91% (P < .05). Doppler intensity increased more than 16 dB in all vascular regions investigated (P < .05). The contrast effect lasted for more than 120 seconds in the peripheral vascular and cardiac groups at equivalent doses. CONCLUSION: Intravenously administered SH U 508A is effective in markedly increasing cardiac, femoral arterial, and transcranial (cerebral arterial) Doppler signal intensity. The effect improves the clinical diagnostic confidence in cases of suboptimal unenhanced Doppler examinations.


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