Figure 1.

Whole body bone scan in case 1. Whole body planar images were acquired 5 min (left two images) and 3 h (right two images) after intravenous 99mTc-DPD radiotracer administration. Incidental significant cardiac uptake is seen, raising concern for cardiac ATTR amyloidosis. Otherwise, there is expected radiotracer accumulation in the skeleton and urinary tract and additional sites of focal uptake related to degenerative disease at multiple joints. Focal uptake at the injection site in the right arm is also demonstrated.