There is abnormal increased uptake of tracer in the myocardium (most avid in the left ventricle) at one hour. Anatomical localisation confirmed on the fused SPECT-CT.
Cardiac uptake is much greater than rib uptake, with relative suppression of tracer accumulation in the ribs (Grade 3). Heart to contralateral thorax ratio is elevated (1.86, normal less than 1.5). The scan is considered positive for ATTR amyloidosis given the clinical history.
Cardiomegaly. Small pericardial effusion. Bilateral pleural effusions (left greater than right) with adjacent basal collapse.