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https://hdl.handle.net/2440/54198
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Type: | Journal article |
Title: | Investigation of a MOSFET dosimetry system for midpoint dose verification in prostate 3D CRT/IMRT |
Author: | Wiese, T. Bezak, E. Nelligan, R. |
Citation: | Australasian Physical and Engineering Sciences in Medicine, 2008; 31(3):180-190 |
Publisher: | Australasian College of Physical Scientists and Engineers in Medicine |
Issue Date: | 2008 |
ISSN: | 0158-9938 1879-5447 |
Statement of Responsibility: | Wiese, T; Bezak, E and Nelligan, R |
Abstract: | The suitability of MOSFETs (Metal Oxide Semiconductor Field Effect Transistors) for use in in-vivo dosimetry for IMRT prostate treatment and patient setup errors has been investigated in this work. MOSFETs were placed on entrance and exit surfaces of a number of different phantoms (with varying complexities from homogeneous to anthropomorphic). Dose measurements were then used to calculate a midpoint dose, which was compared with an IC placed at the isocentre. The agreements found between the calculated (MOSFETs) and the measured midpoint dose (IC) was: 0.7 % for a prostate treatment verification and 3.5 % for an IMRT treatment. MOSFETs placed on entry and exit surfaces can detect patient setup offsets of 2 cm, but do not have the sensitivity to confidently detect offsets of 1 cm or smaller. |
Keywords: | Humans Prostatic Neoplasms Radiotherapy, Conformal Radiotherapy Dosage Sensitivity and Specificity Reproducibility of Results Equipment Design Equipment Failure Analysis Radiometry Body Burden Relative Biological Effectiveness Male Transistors, Electronic |
DOI: | 10.1007/BF03179342 |
Description (link): | http://search.informit.com.au/documentSummary;dn=331269317022569;res=IELENG |
Published version: | http://dx.doi.org/10.1007/bf03179342 |
Appears in Collections: | Aurora harvest 5 Physics publications |
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