Fig. 2.

^99mTechnetium pyrophosphate (^99mTc-PYP) scintigraphy and semiquantitative analysis on planar images using heart retention (done 3 h after injection of ^99mTc-PYP) showed grade 1 uptake in the heart (A-1, B-1). Single-photon emission computed tomography/computed tomography fusion imaging showed cardiac blood pool uptake (A-2,3,4, B-2,3,4) on the first and second examinations, but local patchy uptake in the myocardium of left ventricle septal wall was also revealed in the second examination (B-2, 4; yellow arrows).