Usefulness of 99mTc-DPD scintigraphy in cardiac amyloidosis.

In their useful state-of-the-art paper on the evaluation and management of cardiac amyloidosis, Selvanayagam et al. ([1][1]) rightly dedicate much space to noninvasive evaluation but make no mention of a relevant imaging tool: 99mTc-3,3-diphosphono-1,2-propanodicarboxylic acid (99mTc-DPD)