Table 8.

Sample size estimates for myocardial perfusion by CMR.

Patient Group	SD*	Sample Size†
All subjects
2 segment change in number of ischemic segments	0.88	12
0.10 change in transmural ischemia index	0.10	46
0.20 change in myocardial perfusion reserve index	0.26	74
Low risk coronary artery disease - Control
2 segment change in number of ischemic segments	0.57	8
0.10 change in transmural ischemia index	0.11	54
0.20 change in myocardial perfusion reserve index	0.28	86
Coronary artery disease - Case
2 segment change in number of ischemic segments	1.14	16
0.10 change in transmural ischemia index	0.09	38
0.20 change in myocardial perfusion reserve index	0.22	54

*Standard deviation of differences between first and second study.

^†Sample size estimates for a two treatment parallel trial design.