Fig. 3.

Cardiac MRI (1.5 Tesla) images showing the well-defined ovoid interatrial lesion (yellow arrow). (A) Balanced turbo field echo (BTFE) 4 chamber cine image (10 mm thickness) confirms the well-defined nature of the lesion with a homogenous slightly hyperintense signal. (B) Black blood proton density short axis image (8 mm thickness) with fat saturation shows the homogenous slightly hyperintense signal of the lesion. The lack of signal loss with fat saturation confirms the lack of fat contents within the lesion and excludes lipomatous lesions and lipomatous hypertrophy from the differential diagnosis. (C) 2D Phase sensitive inversion recovery (PSIR) single shot short axis image (10 mm thickness) acquired 10 minutes following injection of intravenous gadolinium confirms lack of enhancement and cystic nature of the lesion.