White-gray matter differentiation in computed tomography.

  title={White-gray matter differentiation in computed tomography.},
  author={T Arimitsu and Giovanni Di Chiro and Rodney A. Brooks and Peter B. Smith},
  journal={Journal of computer assisted tomography},
  volume={1 4},
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… CONTINUE READING