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. Author manuscript; available in PMC: 2019 Jan 1.

Published in final edited form as: Trends Cardiovasc Med. 2017 Jul 13;28(1):10–21. doi: 10.1016/j.tcm.2017.07.004

a-d. Tc99m pyrophosphate (PYP) scans in AP and lateral projections revealing equivocal (Grade 1) uptake (3a and 3b) in a patient with AL amyloidosis, and strongly positive (Grade 3) uptake (3c and 3d) by the heart when compared to the surrounding ribs in a patient with ATTR wild-type amyloidosis.

a-d. Tc99m pyrophosphate (PYP) scans in AP and lateral projections revealing equivocal (Grade 1) uptake (3a and 3b) in a patient with AL amyloidosis, and strongly positive (Grade 3) uptake (3c and 3d) by the heart when compared to the surrounding ribs in a patient with ATTR wild-type amyloidosis.