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Fig. 1F —Acute pulmonary embolism in 37-year-old woman. Technetium-99m
sestamibi and CT fusion image confirms that right lower lobe 99mTc
sestamibi abnormality overlies acute pulmonary emboli (arrow) in
posterior and lateral basal segmental arteries. On fusion image, abnormal
radiopharmaceutical uptake area on scintigram is larger than identified emboli
on CT. Explanation for this observation is that resolution of 99mTc
sestamibi perfusion scintigraphy is poor in comparison to that of CT.
