PT  - JOURNAL ARTICLE
AU  - Richard E. Latchaw
AU  - J. Thomas Payne
AU  - Ruth B. Loewenson
TI  - Predicting Brain Tumor Histology: Change of Effective Atomic Number with Contrast Enhancement
DP  - 1980 Jul 01
TA  - American Journal of Neuroradiology
PG  - 289--294
VI  - 1
IP  - 4
4099  - http://www.ajnr.org/content/1/4/289.short
4100  - http://www.ajnr.org/content/1/4/289.full
SO  - Am. J. Neuroradiol.1980 Jul 01; 1
AB  - Thirty-eight enhancing intracranial neoplasms were evaluated with a dual kilovoltage technique to measure the change of effective atomic number (ΔZ), and linear attenuation coefficients with the use of iodinated contrast material. The change of effective atomic number was found to separate intracranial neoplasms into three major groups: gliomas, meningiomas, and metastases. Other parameters, including linear attenuation coefficients and CT numbers, varied from less accurate to inaccurate. The change of effective atomic number with contrast enhancement not only predicted the appropriate histologic group of the neoplasm, but also aided in the differential diagnosis of neoplasms without a characteristic ΔZ value.