Keywords Parole chiave: Brain, Magnetic Resonance Imaging, Segmentation, Volume Measurement, Article, Brain Size, Brain Slice, Cerebrospinal Fluid, Controlled Study, Data Base, Gray Matter, Human, Human Experiment, Normal Human, Nuclear Magnetic Resonance, Phantom, Reproducibility, Simulation, Volumetry, White Matter, Adolescent, Adult, Age Factors, Alzheimer Disease, Atrophy, Brain Diseases, Databases, Image Processing, Computer-Assisted, Middle Aged, Multiple Sclerosis, Regression Analysis, Reproducibility Of Results, Retrospective Studies, Alzheimer Disease Pathology, Brain Anatomy, Histology Pathology, Brain Diseases Pathology, Databases As Topic, Computer-Assisted Methods, Magnetic Resonance Imaging Methods, Multiple Sclerosis Pathology,
Affiliations Affiliazioni: Department of Radiology, CNR-Nuclear Medicine Center, University Federico II, Napoli, Italy Via Manzoni 213, 80123 Napoli, Italy
References Riferimenti: Alfano, B., Brunetti, A., Covelli, E.M., Quarantelli, M., Panico, M.R., Ciarmiello, A., Salvatore, M., Unsupervised, automated segmentation of the normal brain using a multispectral relaxometric magnetic resonance approach (1997) Magn. Reson. Med., 37, pp. 84-9
Narayana, P.A., Borthakur, A., Effect of radio frequency inhomogeneity correction on the reproducibility of intra-cranial volumes using MR image data (1995) Magn. Reson. Med., 33, pp. 396-400
Fox, N.C., Freeborough, P.A., Rossor, M.N., Visualisation and quantification of rates of atrophy in Alzheimer's disease (1996) Lancet, 348, pp. 94-97
Narayana, P. A., Borthakur, A., Effect of radio frequency inhomogeneity correction on the reproducibility of intra-cranial volumes using MR image data (1995) Magn. Reson. Med., 33, pp. 396-400
Fox, N. C., Freeborough, P. A., Rossor, M. N., Visualisation and quantification of rates of atrophy in Alzheimer's disease (1996) Lancet, 348, pp. 94-97
Reproducibility of intracranial volume measurement by unsupervised multispectral brain segmentation
To assess the inter-study variability of a recently published unsupervised segmentation method (Magn. Reson. Med. 1997;37:84-93), 14 brain MR studies were performed in five normal subjects. Standard deviations for absolute and fractional volumes of intracranial compartments, which reflect the experimental variability, were smaller than 16.5 ml and 1.1%, respectively. By comparing the experimental component of the variability with the variability observed in our reference database, an estimate of the biological variability of the intracranial fractional volumes in the database population was obtained.
Reproducibility of intracranial volume measurement by unsupervised multispectral brain segmentation
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