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Effect of Radio Frequency Inhomogeneity Correction on the Reproducibility of Intra‐Cranial Volumes Using MR Image Data
Author(s) -
Narayana Ponnada A.,
Borthakur Arijitt
Publication year - 1995
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910330312
Subject(s) - reproducibility , segmentation , white matter , nuclear medicine , radio frequency , artificial intelligence , magnetic resonance imaging , observer (physics) , computer science , pattern recognition (psychology) , nuclear magnetic resonance , physics , medicine , mathematics , radiology , statistics , quantum mechanics , telecommunications
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.