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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Magn Reson Med. 2015 Sep 12;76(3):792–802. doi: 10.1002/mrm.25920

Table 4.

Effect of number of flip angles on bias, standard deviation, and RMSE of resulting T1 estimates (all measures in units of s). Results are based on simulations in the human brain with an SNR of 20 and using flip angle sets listed in Table 2. Percent change in RMSE is compared to that of the Nα = 2 estimate.

Nα = 2 Nα = 4 Nα = 6 Nα = 8 Nα = 10
Bias 5.77E-3 2.75E-3 1.92E-3 1.39E-3 1.13E-3
Standard Deviation 1.21E-1 8.52E-2 6.92E-2 5.98E-2 5.36E-2
RMSE 1.21E-1 8.52E-2 6.92E-2 5.98E-2 5.36E-2
RMSE % change −29.4 −42.7 −50.5 −55.6