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Updated: Jul 23, 2025

Magnetic Resonance Imaging Quantification of Pulmonary Perfusion using Calibrated Arterial Spin Labeling
Published on: May 30, 2011
Artifactual Hot Spots on Technetium-99m Macroaggregated Albumin Perfusion Lung Scan
Chaimae Sebbar1, Soufiane Hiroual1, Nathalie Kouassi1
1Department of Nuclear Medicine, Mohamed VI University Hospital, Marrakesh, Morocco.
Abstract:
A 40-year-old male patient with pulmonary tuberculosis was subjected to a perfusion lung scan to rule out pulmonary embolism. Administration of technetium-99m macroaggregated albumin through preexisting venous access resulted in multiple round hot spots in both pulmonary fields. This finding was interpreted as an artifact caused by injection through preexisting venous access.
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