Fig. 2.

Comparison of T1 map and square root of CRLB_σ map of a patient with and without automated registration to correct for patient movement (colour overlay). The CRLB_σ (ms) provides a lower bound for standard deviation of T1 (ms) and is a measure for registration quality. The background greyscale image is a T1-weighted image (FSPGR_{TI = 2,100}). a T1 map without registration, (b) CRLB_σ map without registration showing high uncertainty in the T1 estimates, (c) improved T1 map with registration, (d) CRLB_σ map with registration showing reduced uncertainty in the T1 estimates