Figure 28. Proposed nuclear medicine diagnostic sequence for suspected cases of cardiac amyloidosis (CA). TTE: transthoracic echocardiogram; MRI: magnetic resonance imaging; TTR: transthyretin amyloidosis (TTRm: mutant TTR; TTRwt: wild-type TTR); AL: light-chain amyloidosis; PYP: pyrophosphate; DPD: 3,3-diphosphono-1,2-propanodicarboxylic acid;99mTc: technetium-99m.
