Orthogonal Fields: Variations in Dosevs.Gap Size for Treatment of the Central Nervous System
- 1 March 1978
- journal article
- research article
- Published by Radiological Society of North America (RSNA) in Radiology
- Vol. 126 (3) , 795-798
- https://doi.org/10.1148/126.3.795
Abstract
Variations in dose at the junction at the lower end of 2 lateral skull portals and the upper end of a posterior spinal portal used for irradiation of the CNS [for human malignancies] were studied using 60Co and 6 MV linear accelerator radiation. The relationship between dose and gap size was measured via film dosimetry. Small variations in gap size resulted in large variations in dose (.+-. 40%) at the junction. These variations in dose were more pronounced for the 6 MV accelerator than for the 60Co, but the volume of high and low dose tended to be smaller with the 6 MV linear accelerator.This publication has 1 reference indexed in Scilit:
- Dose Distribution Between Adjoining Therapy FieldsRadiology, 1962