Myelin water imaging in multiple sclerosis: quantitative correlations with histopathology
| Autor: | Alex L. MacKay, G. R. W. Moore, Cornelia Laule, Donald W. Paty, Esther Leung, Anthony Traboulsee, D K B Lis |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Adult
Male medicine.medical_specialty Pathology Stain Luxol fast blue stain Central nervous system disease 03 medical and health sciences Myelin Fixatives 0302 clinical medicine Formaldehyde medicine Humans 030212 general & internal medicine Remyelination Myelin Sheath Aged Aged 80 and over medicine.diagnostic_test Chemistry Echo-Planar Imaging Multiple sclerosis Water Magnetic resonance imaging Middle Aged Multiple Sclerosis Chronic Progressive medicine.disease medicine.anatomical_structure Neurology Histopathology Female Neurology (clinical) Tissue Preservation 030217 neurology & neurosurgery Biomarkers Demyelinating Diseases |
| Zdroj: | Multiple sclerosis (Houndmills, Basingstoke, England). 12(6) |
| ISSN: | 1352-4585 |
| Popis: | Various magnetic resonance (MR) techniques are used to study the pathological evolution of demyelinating diseases, such as multiple sclerosis (MS). However, few studies have validated MR derived measurements with histopathology. Here, we determine the correlation of myelin water imaging, an MR measure of myelin content, with quantitative histopathologic measures of myelin density. The multi-component T2 distribution of water was determined from 25 formalin-fixed MS brain samples using a multi-echo T2 relaxation MR experiment. The myelin water fraction (MWF), defined as T2 signal below 30 milliseconds divided by the total signal, was determined for various regions of interest and compared to Luxol fast blue (myelin stain) mean optical density (OD) for each sample. MWF had a strong correlation with myelin stain [mean (range) R2-/0.67 (0.45+ 0.92)], validating MWF as a measure of myelin density. This quantitative technique has many practical applications for the in vivo monitoring of demyelination and remyelination in a variety of disorders of myelin. |
| Databáze: | OpenAIRE |
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