Figure 1

A1. A DIR TSE image demonstrates fat in the atrioventricular groove as well as a non-fat-based mass at the mitral annulus. A2. The corresponding T1 map shows a mass with a relatively low T1 value (417 ms) consistent with mitral annular calcification. B1. A DIR TSE SPAIR image demonstrates a catheter-related thrombus in the right atrium. B2. The T1 map shows a mass with an intermediate T1 time (1114 ms). C1. An SSFP image in a patient with metastatic melanoma demonstrates a region of bright signal intensity in the anterior myocardial segment. C2. The relatively low T1 values (~700 ms) of the melanin-rich metastatic foci on the corresponding T1 map facilitate identification of myocardium studded with tumor.