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Figure 3 Typical Contrast CMRI of 2 Patients Diagnosed With Cardiac Amyloidosis by EMB
In both patients, LGE was diffusely distributed in large areas of the left ventricle involving the entire subendocardium (TI = 230 ms in both patients). Interestingly, the subepicardial myocardium is affected only in areas of transmural LGE. Note that LGE is also located in the papillary muscles (white arrowheads). Histologic images include Mason’s trichrome with amyloid deposits between myocytes (black arrows, large right panels) and Congo red staining (inset right panels) demonstrating typical green birefringence under cross-polarized light. Abbreviations as in Figures 1 and 2.
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