Figure 6.

Magnetic resonance imaging in a 67 male patient with long-standing severe pulmonary hypertension. Axial postgadolinium VIBE (volume interpolated breath-hold) image shows aneurysmal pulmonary arteries with layered in situ thrombus in left lower lobar pulmonary artery (arrow). Cine steady-state free precession 4-chamber supplementary video clip shows massively enlarged bilateral pulmonary arteries with layered in situ thrombus. There is associated right ventricle enlargement and right ventricular hypertrophy. The right ventricle systolic function was moderately depressed (ejection fraction-40%). Cine steady-state free precession nicely depicts the swirling of blood within the pulmonary arteries, reflecting sluggish flow. Also seen is mild tricuspid regurgitation