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Journal of Ultrasound in Medicine, Vol 19, Issue 11 789-796, Copyright © 2000 by American Institute of Ultrasound in Medicine

JOURNAL ARTICLE

Echo-enhanced color Doppler sonography in children and adolescents

M. Riccabona, M. Uggowitzer, E. Klein, F. Lindbichler, F. Ebner and R. Fotter
Department of Radiology, University Hospital LKH Graz, Austria.

Fifty-one patients, with a range of underlying pathologic conditions, were studied prospectively to assess the diagnostic value of echo-enhanced color Doppler sonography in the pediatric and adolescent population Their diagnoses included various tumors, vascular disorders, cerebral bleeding, pathologic conditions of small parts, and focal lesions of parenchymal organs. All patients underwent color Doppler sonography before proceeding to echo-enhanced color Doppler sonography. Diagnoses were confirmed by additional imaging (computed tomography, magnetic resonance imaging, angiography, and scintigraphy) performed as appropriate, with or without histologic study. An additional 20 children did not proceed to echoenhanced color Doppler sonography as color Doppler sonography alone was found to be sufficiently diagnostic. Levovist (SHU 508A), a contrast agent based on galactose-encapsulated air microbubbles, is approved for pediatric applications in Austria and was used as the echo-enhancing agent. Echo-enhanced color Doppler sonography was performed a total of 63 times in 51 patients (mean age, 9.8 years). Compared to color Doppler sonography, echo-enhanced color Doppler sonography either detected or enhanced visualization of pathologic conditions in 55 investigations (87.3%), yielding an overall accuracy of 95.2% (sensitivity, 95%), versus 65.7% with color Doppler sonography. One spinal arteriovenous malformation, one cerebral cavernoma, and one liver lesion were missed. The contrast material was easy to administer; no adverse reactions were observed. We conclude that echoenhanced color Doppler sonography is beneficial in pediatric sonography. It enhances visualization of vessels and perfusion, thus offering a nonionizing imaging tool for detection and follow-up evaluation of pathologic conditions with disturbed vasculature in specific cases. In infants and in persons with superficial lesions it did not offer significant advantages over color Doppler sonography.




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