Personalization of 99mTc-sestamibi activity in SPECT/CT myocardial perfusion imaging with the cardiofocal SmartZoom® collimator

EJNMMI Physics

Table 4 Examples of patient weight-based personalization of optimal activity and scan time

Patient weight, kg	Personalized activity using a fixed scan time (20 s per projection angle, using 17 projections), MBq	Personalized scan time using a fixed activity (260 MBq), seconds	Relative difference^a in activity or scan time compared to clinical practice (260 MBq or 20 s per projection angle, respectively), %
45	85	7	− 67
70	159	12	− 39
100	260	20	0
120	338	26	+ 30
150	462	36	+ 78

^aNegative relative differences indicate a reduction in activity or scan time, whereas positive relative differences indicate increased activity or scan time