Effective Atomic Number and Electron Density as Measured with a Computed Tomography Scanner: Computation and Correlation with Brain Tumor Histology
- 1 April 1978
- journal article
- research article
- Published by Wolters Kluwer Health in Journal of Computer Assisted Tomography
- Vol. 2 (2) , 199-208
- https://doi.org/10.1097/00004728-197804000-00014
Abstract
The mathematical basis and methodology for determining the effective atomic number and electron density of a tissue are presented. Cranial computed tomography (CT) scanning is performed at 2 energy levels, with and without contrast enhancement. The histology of 15 human brain tumors was correlated with the effective atomic number and electron density of the tumor, parameters of the linear attenuation coefficient and statistical values of the CT numbers. The most useful value in separating gliomas from meningiomas and metastases appears to be the percentage change of effective atomic number following contrast enhancement.This publication has 0 references indexed in Scilit: