Effect of radio frequency inhomogeneity correction on the reproducibility of intra-cranial volumes using MR image data

Magn Reson Med. 1995 Mar;33(3):396-400. doi: 10.1002/mrm.1910330312.


The volumes of total brain, white matter, gray matter, and cerebrospinal fluid in normal volunteers were determined using a supervised nonparametric feature map segmentation of dual-contrast MR images after correcting for the radio frequency (RF) inhomogeneity. Reproducibility of the segmentation was evaluated in terms of inter-observer and scan-to-scan variations. A comparison with the published results indicates that the scan-to-scan and inter-observer variabilities in the determination of tissue volumes are substantially reduced following the RF inhomogeneity correction.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Brain / anatomy & histology*
  • Cerebrospinal Fluid
  • Female
  • Foramen Magnum / anatomy & histology
  • Humans
  • Image Enhancement / methods*
  • Magnetic Resonance Imaging / methods*
  • Magnetic Resonance Imaging / statistics & numerical data
  • Male
  • Observer Variation
  • Radio Waves
  • Reproducibility of Results