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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Evaluation of calculation algorithms implemented in different commercial planning systems on an anthropomorphic breast phantom using film dosimetry
Strahlentherapie und Onkologie, Volume 183, No. 12, Year 2007
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Description
Purpose: To evaluate the accuracy of dose calculation algorithms of different planning systems for postoperative tangential radiotherapy in breast cancer. Material and Methods: On a CT dataset of an anthropomorphic phantom, a structure set of the left lung, clinical target volume (CTV), planning target volume, heart, and external contour were delineated. The dataset was processed by six radiation oncology centers participating in this multicenter dosimetry project. Conventional plans with two tangential wedged fields were generated in MasterPlan®, Pinnacle®, Eclipse®, TMS®, and PrecisePLAN®. Plan calculations were done using the beam data of local linacs. The dose distributions were verified under local conditions with Gafchromic®-EBT films. Results: In all planning systems, deviations between calculation and measurement were around ±3% in the CTV in the measured plane. Only small areas with deviations of ±5% were detected. Pencil-beam (PB) calculations overestimated the dose inside the lung by up to 23%. Collapsed cone (CC) underestimated the lung dose by up to 6%. Conclusion: CC calculates the dose distribution more accurately than PB. Inside regions with electron disequilibrium, however, the dose is slightly underestimated. © 2007 Urban & Vogel.
Authors & Co-Authors
Polednik, Martin
Germany, Mannheim
Universitätsklinikum Mannheim
Abo-Madyan, Yasser M.
Germany, Mannheim
Universitätsklinikum Mannheim
Egypt, Cairo
Cairo University Hospitals
Schneider, Frank S.
Germany, Mannheim
Universitätsklinikum Mannheim
Wolff, Dirk
Germany, Mannheim
Universitätsklinikum Mannheim
Bannach, Burkhardt
Germany
Duesseldorf University Hospital
Lambrecht, Ulrike
Germany, Erlangen
Universitätsklinikum Erlangen
Wallin, André
Germany, Berlin
Vivantes Humboldt-klinikum
Cwiekala, Marian
Germany, Hagen
General Hospital Hagen
Maurer, Klaus
Germany
St.-vincentius-hospital Gag
Reif, Florian
Germany
St.-vincentius-hospital Gag
Lohr, Frank R.H.
Germany, Mannheim
Universitätsklinikum Mannheim
Wenz, Frederik
Germany, Mannheim
Universitätsklinikum Mannheim
Statistics
Citations: 30
Authors: 12
Affiliations: 7
Identifiers
Doi:
10.1007/s00066-007-1775-1
ISSN:
01797158
Research Areas
Cancer