CTICasesBilateral Pulmonary Embolism in a Postpartum Patient
Imaging findings
CT angiography in a postpartum patient who collapsed shows substantial bilateral pulmonary emboli. The initial study was non-diagnostic due to a combination of transient interruption of contrast (Valsalva effect) and artifact from the arms placed at the patient's sides.
Key takeaways
Technical factors can severely limit CT pulmonary angiograms. Placing the arms at the sides causes severe photon starvation artifact, and deep inspiration/Valsalva during contrast injection can cause transient dilution from unopacified inferior vena cava blood.
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