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Doppler Imaging of the Liver

Doppler Imaging of the Liver Angigraphy remains the technique of choice when imaging of the hepatic vasculature is necessary. Unfortunately, the requirement for injection of contrast material and the inherently invasive nature of this procedure preclude its use as a widely applied screening technique. In addition, the intrahepatic vascula-ture may be difficult to opacify angiographically. The portal venous system is relatively isolated and may require direct or relatively complex injection techniques; the hepatic veins may be impossible to access if significant obstruction exists at or about their junction with the inferior vena cava (IVC). Sonography, contrast-enhanced CT, and MR imaging now provide less invasive alternatives for the evaluation of the hepatic vessels. But conventional sonography and CT have significant limitations. MR imaging is expensive, and MR angiography software is not available in all institutions. In addition, the resolution of MRI is limited, abdominal vascular examinations may be time consuming to perform and degraded by motion artifact, and dynamic flow information is not routinely available. The ultimate role of MRI in hepatic vascular disease remains to be defined. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ultrasound quarterly Wolters Kluwer Health

Doppler Imaging of the Liver

Ultrasound quarterly , Volume 10 (3) – Jan 1, 1992

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ISSN
0894-8771
eISSN
1536-0253

Abstract

Angigraphy remains the technique of choice when imaging of the hepatic vasculature is necessary. Unfortunately, the requirement for injection of contrast material and the inherently invasive nature of this procedure preclude its use as a widely applied screening technique. In addition, the intrahepatic vascula-ture may be difficult to opacify angiographically. The portal venous system is relatively isolated and may require direct or relatively complex injection techniques; the hepatic veins may be impossible to access if significant obstruction exists at or about their junction with the inferior vena cava (IVC). Sonography, contrast-enhanced CT, and MR imaging now provide less invasive alternatives for the evaluation of the hepatic vessels. But conventional sonography and CT have significant limitations. MR imaging is expensive, and MR angiography software is not available in all institutions. In addition, the resolution of MRI is limited, abdominal vascular examinations may be time consuming to perform and degraded by motion artifact, and dynamic flow information is not routinely available. The ultimate role of MRI in hepatic vascular disease remains to be defined.

Journal

Ultrasound quarterlyWolters Kluwer Health

Published: Jan 1, 1992

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