Figure 5From: Myocardial T2* mapping: influence of noise on accuracy and precision Monte- Carlo simulation of the accuracy (bias on left) and precision (center) of estimated T2* vs true T2* and SNR using the simplex fit. Coefficient of variation (SD/T2*) is shown on right. Dotted lines represent fitting without truncation to mitigate noise bias, and solid lines represent fitting using proposed automatic truncation of values below a specified SNR. Note that bias error increase for low T2* and low SNR. Truncation mitigates noise bias at a very small penalty in precision at low T2*.Back to article page