Table 3: Absolute average for a sample sequence for TR 70 ms and TE 10 ms as a function of FA. This data reflects the same systematic variation of accuracy with flip angle, even at fine gradations of the flip angle. Using such fine gradations, it is possible to lower the percentage error to 5%. This occurs at a flip angle of 50°.

TR 70 ms
FA PD%

10°26
20°23
30°18
40°11
50°5
60°9
90°28