Question

A 65-year-old woman with suspected PE and normal renal function is pregnant. What is the best initial imaging modality?

Accepted Answer

Ventilation-perfusion (V/Q) scan after chest x-ray

Answer

CT pulmonary angiography (CTPA) first, always

Answer

No imaging; rely on D-dimer

Answer

Lower-extremity ultrasound only

Answer

MR angiography first

Practice question

A 65-year-old woman with suspected PE and normal renal function is pregnant. What is the best initial imaging modality?