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Updated: Apr 25, 2026
Magnetic Resonance Imaging Quantification of Pulmonary Perfusion using Calibrated Arterial Spin Labeling
Published on: May 30, 2011
Lung perfusion imaging in hepatopulmonary syndrome using (99m)Tc macroaggregated albumin
Devaki Shilpa Surasi1, Padma Manapragada, Pradeep Bhambhvani
1Department of Radiology, The University of Alabama at Birmingham, Birmingham, AL, USA, dsurasi@uabmc.edu.
Abstract:
Hepatopulmonary syndrome is a serious pulmonary vascular complication in patients with chronic liver disease. It constitutes a triad of chronic liver disease, increased alveolar-arterial oxygen gradient, and evidence of intrapulmonary shunt (IPS). The diagnosis of IPS can be made by bubble echocardiography, technetium-99m-labeled macroaggregated albumin ((99m)Tc-MAA) scintigraphy or pulmonary arteriography. Though echocardiography is a sensitive screening test, MAA scintigraphy can also quantify the extent of shunting.
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