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Table 3 Descriptive statistics of brain tissue volumes of a young healthy volunteer scanned 6 times at several acceleration (iPAT) factors.

From: Parallel imaging: is GRAPPA a useful acquisition tool for MR imaging intended for volumetric brain analysis?

   BET/Sienax BMAP/Volstat
Volume iPAT Mean SD CoV Mean SD CoV
BPF 0 82.9% 0.3% 0.3% 80.7% 0.3% 0.3%
  2 82.3% 0.4% 0.5% 80.6% 0.2% 0.3%
  4 82.4% 0.3% 0.4% 78.1% 0.3% 0.3%
GM 0 823 7.6 0.9% 786 4.2 0.5%
  2 817 6.5 0.8% 786 2.8 0.4%
  4 756 4.0 0.5% 781 2.8 0.4%
WM 0 539 8.5 1.6% 483 3.2 0.7%
  2 553 5.0 0.9% 485 3.8 0.8%
  4 635 3.3 0.5% 452 6.1 1.3%
CSF 0 281 7.3 2.6% 304 4.4 1.4%
  2 294 9.5 3.2% 305 3.3 1.1%
  4 298 7.1 2.4% 345 4.2 1.2%
  1. Volumes were measured using the BET and Sienax algorithms of FSL in addition to the BMAP/Volstat in-house software. Volumes are in cm3 with the exception of BPF, which is unitless.