Fig. 5From: Personalization of 99mTc-sestamibi activity in SPECT/CT myocardial perfusion imaging with the cardiofocal SmartZoom® collimatorBox plot showing the myocardial-signal distributions in the poor-/intermediate- and good-quality images. The myocardial signal at the first quartile of the good-quality images was 22,000 counts. It was chosen as the myocardial signal thresholdBack to article page