What Is the Best Imaging Study to Rule Out Pulmonary Embolism in Pregnancy?

A total of 8,144 records were identified through database searching, of which 195 articles met initial screening criteria; of these, 11 studies (4 CT pulmonary angiography, 5 lung scintigraphy, and 2 both) with a total of 695 CT pulmonary angiography and 665 lung scintigraphy results were included. Lung scintigraphy was applied by different techniques, such as ventilation-perfusion scanning, perfusion-only scanning, and ventilation-perfusion single-photon-emission CT, which produces 3-dimensional images.

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