Figure 2

(2) Mean measured T1 values plotted versus actual T1 values based on a gold-standard reference IR-prepared Spin Echo acquisition. With the effective noise reduction achieved with the CS-tPCA the average T1 error dropped from 17% with the fully sampled data (red squares) to 8% with the CS-tPCA reconstructed data (blue circles). (b) Standard deviation of T1 values within each sample. T1 maps using fully sampled data (red squares) demonstrate more variability than with CS-tPCA data (blue circles).