From: A Novel Diagnostic Method for Acute Pulmonary Embolism: Technetium-99m Apcitide Scintigraphy Ann Intern Med. 2004;140(11):936-939. doi:10.7326/0003-4819-140-11-200406010-00028 Figure Legend: Fusion images (third row) demonstrate 2 large perfusion defects within the superior and lateral basal segments of the left lower lung lobe (lack of blue) with accumulation (shown in red) of technetium-99m apcitide within these noted perfusion defects. Date of download: 12/20/2017 Copyright © American College of Physicians. All rights reserved.