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Comparison of measured and calculated absorbed doses from tangential irradiation of the breast

Knöös, Tommy LU ; Ahlgren, Lars and Nilsson, Mats LU (1986) In Radiotherapy and Oncology 7(1). p.81-88
Abstract
Calculated absorbed dose distributions from tangential irradiation of the breast have been compared with TLD measurements in a anthropomorfic body-shaped phantom which has gone through all phases of the radiation treatment planning cycle, including mapping of electron densities with a CT scanner, simulation of beam set-up and several treatments with an accelerator. The absorbed doses, measured in the breast are 2-6% lower than those calculated with the clinically used treatment planning system. The deviation is slightly higher when wedges are used. The main source for this deviation is shown to be the limitations in the loss-of-scatter correction in the dose calculation algorithm used. It has also been noted that the variation of the... (More)
Calculated absorbed dose distributions from tangential irradiation of the breast have been compared with TLD measurements in a anthropomorfic body-shaped phantom which has gone through all phases of the radiation treatment planning cycle, including mapping of electron densities with a CT scanner, simulation of beam set-up and several treatments with an accelerator. The absorbed doses, measured in the breast are 2-6% lower than those calculated with the clinically used treatment planning system. The deviation is slightly higher when wedges are used. The main source for this deviation is shown to be the limitations in the loss-of-scatter correction in the dose calculation algorithm used. It has also been noted that the variation of the absorbed dose in the target volume is in general smaller than predicted by the calculations. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Tangential treatment, Breast cancer, Radiation therapy, Dose planning, Phantom measurements
in
Radiotherapy and Oncology
volume
7
issue
1
pages
81 - 88
publisher
Elsevier
external identifiers
  • scopus:0022974147
ISSN
1879-0887
DOI
10.1016/S0167-8140(86)80127-X
language
English
LU publication?
yes
id
6823ce29-9329-4fce-b87b-9d12bc7dab96 (old id 1103719)
date added to LUP
2008-08-11 11:27:02
date last changed
2017-01-01 05:00:16
@article{6823ce29-9329-4fce-b87b-9d12bc7dab96,
  abstract     = {Calculated absorbed dose distributions from tangential irradiation of the breast have been compared with TLD measurements in a anthropomorfic body-shaped phantom which has gone through all phases of the radiation treatment planning cycle, including mapping of electron densities with a CT scanner, simulation of beam set-up and several treatments with an accelerator. The absorbed doses, measured in the breast are 2-6% lower than those calculated with the clinically used treatment planning system. The deviation is slightly higher when wedges are used. The main source for this deviation is shown to be the limitations in the loss-of-scatter correction in the dose calculation algorithm used. It has also been noted that the variation of the absorbed dose in the target volume is in general smaller than predicted by the calculations.},
  author       = {Knöös, Tommy and Ahlgren, Lars and Nilsson, Mats},
  issn         = {1879-0887},
  keyword      = {Tangential treatment,Breast cancer,Radiation therapy,Dose planning,Phantom measurements},
  language     = {eng},
  number       = {1},
  pages        = {81--88},
  publisher    = {Elsevier},
  series       = {Radiotherapy and Oncology},
  title        = {Comparison of measured and calculated absorbed doses from tangential irradiation of the breast},
  url          = {http://dx.doi.org/10.1016/S0167-8140(86)80127-X},
  volume       = {7},
  year         = {1986},
}