Table 1. Percent errors in measurement of white-matter T2 relaxation time constants from data with different SNR levels (measured in images with TE = 140 msec) and post-processing procedures.
| SNR=1 | SNR=1.25 | SNR=1.5 | SNR=1.75 | SNR=2 | |
| A) Without bias correction and denoising | 77.98% | 3.49% | 2.04% | 1.36% | 0.94% |
| B) With only PCM-PCA denoising | 8.40% | 2.83% | 1.75% | 1.21% | 0.86% |
| C) With only Rician bias correction | 64.88% | 3.18% | 1.97% | 1.55% | 1.19% |
| D) With both bias correction and denoising | 8.01% | 2.13% | 1.63% | 1.36% | 1.01% |