doi: 10.1097/00004728-197710000-00009.
White-gray matter differentiation in computed tomography
- PMID: 615222
- DOI: 10.1097/00004728-197710000-00009
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White-gray matter differentiation in computed tomography
J Comput Assist Tomogr.
1977 Oct.
Abstract
A numerical analysis has been performed on six regions of interest within the brain for a total of 60 patients. Three areas of white matter and three of gray matter were included. A difference of 7.1 +/- 1.3 Hounsfeld units (HU: 1,000 scale) was found between white and gray matter. For eight patients who were under 15 years of age, the difference was 5.1 +/- 0.6 HU. Contrast injection resulted in a general increase of values, with gray matter showing a greater elevation by 0.5 HU. The numerical evaluation of white and gray matter has proven to be useful in the diagnosis of leukoencephalopathy.
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