Skin dose in conventional conformal and intensity modulated head and neck radiation therapy
Details
Serval ID
serval:BIB_BB5206A89579
Type
Inproceedings: an article in a conference proceedings.
Publication sub-type
Poster: Summary – with images – on one page of the results of a researche project. The summaries of the poster must be entered in "Abstract" and not "Poster".
Collection
Publications
Institution
Title
Skin dose in conventional conformal and intensity modulated head and neck radiation therapy
Title of the conference
9th Annual Meeting of the Scientific Association of Swiss Radiation Oncology (SASRO)
Address
Basel, Switzerland, March 17-19, 2005
ISBN
0179-7158
Publication state
Published
Issued date
2005
Peer-reviewed
Oui
Volume
181
Series
Strahlentherapie und Onkologie
Pages
137
Language
english
Notes
Meeting Abstract
Abstract
Objective: To quantify the skin dose received by patients treated in our center using conventional conformal or
intensity modulated radiation therapy (IMRT) for irradiation of the head and neck, including the regional
lymph nodes. To identify the factors contributing to increased skin dose in IMRT.
Material and Methods: Skin dose was measured in-vivo for 10 patients treated using IMRT, and 8 patients treated using a fivebeam
conventional conformal technique, and compared with the dose predicted by the treatment
planning system (TPS) and with the dose measured for a traditional lateral beam technique.
Results: Skin dose is slightly higher for IMRT than for conventional conformal head and neck radiotherapy.
However, superficial target volumes, deficiencies in the dose calculation algorithm in the buildup region,
and increased mask thickness in the neck area can increase the skin dose to 2.5 Gy per fraction (the dose
prescribed to the PTV is 2 Gy per fraction).
Conclusion: Increased skin toxicity is a potential complication of head and neck IMRT. Department-specific
measurements are needed to evaluate the accuracy of skin dose calculations in the buildup region and to
optimize the clinical (volume delineation, mask fabrication) and inverse planning (segmentation method)
processes for IMRT.
intensity modulated radiation therapy (IMRT) for irradiation of the head and neck, including the regional
lymph nodes. To identify the factors contributing to increased skin dose in IMRT.
Material and Methods: Skin dose was measured in-vivo for 10 patients treated using IMRT, and 8 patients treated using a fivebeam
conventional conformal technique, and compared with the dose predicted by the treatment
planning system (TPS) and with the dose measured for a traditional lateral beam technique.
Results: Skin dose is slightly higher for IMRT than for conventional conformal head and neck radiotherapy.
However, superficial target volumes, deficiencies in the dose calculation algorithm in the buildup region,
and increased mask thickness in the neck area can increase the skin dose to 2.5 Gy per fraction (the dose
prescribed to the PTV is 2 Gy per fraction).
Conclusion: Increased skin toxicity is a potential complication of head and neck IMRT. Department-specific
measurements are needed to evaluate the accuracy of skin dose calculations in the buildup region and to
optimize the clinical (volume delineation, mask fabrication) and inverse planning (segmentation method)
processes for IMRT.
Web of science
Create date
28/04/2008 10:35
Last modification date
20/08/2019 15:29
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