Table 2: Absolute average errors ( SD) for TR 40 ms and TR 100 ms as a function of flip angle FA. Absolute average errors vary systematically as a function of FA. For TR 40 ms, the optimal flip angle is 30°, with an absolute average percentage difference PD of . For a TR of 100 ms, the optimal flip angle is 60°, with an absolute average percentage difference PD of .

TR 40 msTR 100 ms
FAPD%PD SDFAPD%PD SD

10°17.64.210°18.35.4
30°7.9330°16.23.7
60°20.57.560°10.24.5
90°4210.590°28.26.7