Abstract #2792

Clinical outcomes after magnetic resonance angiography (MRA) compared to computed tomographic angiography (CTA) for pulmonary embolism evaluation

Scott K Nagle¹, Michael D Repplinger², John B Harringa³, Aimee T Broman⁴, Christopher R Lindholm³, Christopher J Francois¹, Thomas M Grist¹, Scott B Reeder¹, and Mark L Schiebler¹

¹Radiology, University of Wisconsin, Madison, WI, United States, ²Emergency Medicine, University of Wisconsin, United States, ³University of Wisconsin, United States, ⁴Biostatistics, University of Wisconsin

In this retrospective case-control study of 1173 subjects with suspected pulmonary embolism, the 6-month rate of major adverse events (venous thromboembolic, major bleeding, or death) was lower following contrast-enhanced magnetic resonance angiography (MRA) (5.4%) than following computed tomographic angiography (CTA) (13.4%, p < 0.001). The technical success rate of MRA (92.6%) and CTA (90.5%) performed in a routine clinical setting did not differ significantly (p = 0.41). MRA is a clinically effective imaging exam for the primary evaluation of pulmonary embolism.

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