Quantitative Investigation of the X-Ray Absorption Coefficient in Computed Tomography

An Approach to Numerical Diagnosis
  • M. Yamamoto
  • H. Imanaga
  • M. Jimbo
  • K. Kitamura
  • Y. Saito
  • N. Kobayashi
Conference paper

Summary

From printout data of 50 normal and 50 abnormal scans of a brain slice picking up the basal ganglia, the numerical values of SD and DC were obtained and those values lying inside M + 2σ were arbitrarily regarded as normal. By these criteria two cases (4%) were diagnosed as false negative and three cases (6%) as false positive, with a misdiagnosis rate of 5%.

Keywords

Dementia Hydrocephalus 

References

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    Yamamoto, M., Kobayashi, N.: Numerical diagnosis in EMI-scan. Image Technol. Inf. Disp. 9, 14; 29–34 (1977)Google Scholar

Copyright information

© Springer-Verlag Berlin-Heidelberg 1978

Authors and Affiliations

  • M. Yamamoto
    • 3
  • H. Imanaga
    • 1
  • M. Jimbo
    • 1
  • K. Kitamura
    • 1
  • Y. Saito
    • 2
  • N. Kobayashi
    • 2
  1. 1.Department of Neurosurgery, Neurological InstituteTokyo Women’s Medical CollegeTokyoJapan
  2. 2.Department of Neuroradiology, Neurological InstituteTokyo Women’s Medical CollegeTokyoJapan
  3. 3.Department of Neurosurgery Neurological InstituteTokyo Women’s Medical CollegeShinjuku-ku, TokyoJapan

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