Figure 1. Chest computed tomography scan with contrast. (A) Sagittal chest computed tomography scan with contrast administration timed to evaluate the pulmonary arteries. No pulmonary embolic disease was detected. Higher density of blood along the aortic arch and descending aorta (arrows) was appreciated. The fetus was intentionally not imaged to minimize radiation exposure. (B) Axial chest computed tomography scan with contrast administration timed to evaluate the pulmonary arteries showing the true lumen of the descending aorta dissection (star).