ORTHOVOLTAGE APPLICATOR DESIGN - ITS EFFECT ON A TRANSMISSION MONITORCHAMBER

Authors
THOMAS SJ
Citation
Sj. Thomas, ORTHOVOLTAGE APPLICATOR DESIGN - ITS EFFECT ON A TRANSMISSION MONITORCHAMBER, Radiotherapy and oncology, 42(3), 1997, pp. 279-283
Citations number
9
Categorie Soggetti
Oncology,"Radiology,Nuclear Medicine & Medical Imaging
Journal title
Radiotherapy and oncology → ACNP
ISSN journal
01678140
Volume
42
Issue
3
Year of publication
1997
Pages
279 - 283
Database
ISI
SICI code
0167-8140(1997)42:3<279:OAD-IE>2.0.ZU;2-Q
Abstract
In the Pantak DXT300, the applicators are mounted immediately below a transmission monitor chamber. Changing the metals used in applicator c onstruction can cause variations of up to 22% in calibration factor (c Gy MU-1) and apparent dose rate (MU min(-1)), but has no effect on rad iation dose rate (cGy min(-1)). The results are consistent with being caused by backscatter from the applicator to the monitor chamber. (C) 1997 Elsevier Science Ireland Ltd.