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Year 2016, Volume: 37 (2016): Special Issue I, 27 - 32, 27.11.2016

C. Kourtelı F. Benrachı

Abstract

Assessment of Radiation Therapy Positioning Margins

Year 2016, Volume: 37 (2016): Special Issue I, 27 - 32, 27.11.2016

C. Kourtelı F. Benrachı

Abstract

Abstract. The objective of this study is to analyze the positioning uncertainties and assess the effect of dose distribution to fully optimize their margins. Using a treatment planning system to recalculate dose after the movement of the isocenter in different directions, the change in the dose distribution based on the number of images acquired in the positioning and size fields is analyzed. It is obtained an increase of the maximum dose up to 6%, 8% and 9% respectively on the lateral, longitudinal and vertical axis. The increased dose is of the order of 4% to 10 setup acquired images. This value decreases with decreasing field size. Any change in the positioning of the patient can have very serious consequences. It is therefore proposed that the positioning is controlled in the first three days and weekly with a maximum of 03 images every time.

Keywords: Radiotherapy positioning margins, Uncertainties, dose distribution.

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Journal Section Special
Authors

C. Kourtelı This is me

F. Benrachı This is me

Publication Date November 27, 2016
Published in Issue Year 2016 Volume: 37 (2016): Special Issue I

Cite

APA Kourtelı, C., & Benrachı, F. (2016). Assessment of Radiation Therapy Positioning Margins. Cumhuriyet Üniversitesi Fen Edebiyat Fakültesi Fen Bilimleri Dergisi, 37, 27-32.
AMA Kourtelı C, Benrachı F. Assessment of Radiation Therapy Positioning Margins. Cumhuriyet Üniversitesi Fen Edebiyat Fakültesi Fen Bilimleri Dergisi. November 2016;37:27-32.
Chicago Kourtelı, C., and F. Benrachı. “Assessment of Radiation Therapy Positioning Margins”. Cumhuriyet Üniversitesi Fen Edebiyat Fakültesi Fen Bilimleri Dergisi 37, November (November 2016): 27-32.
EndNote Kourtelı C, Benrachı F (November 1, 2016) Assessment of Radiation Therapy Positioning Margins. Cumhuriyet Üniversitesi Fen Edebiyat Fakültesi Fen Bilimleri Dergisi 37 27–32.
IEEE C. Kourtelı and F. Benrachı, “Assessment of Radiation Therapy Positioning Margins”, Cumhuriyet Üniversitesi Fen Edebiyat Fakültesi Fen Bilimleri Dergisi, vol. 37, pp. 27–32, 2016.
ISNAD Kourtelı, C. - Benrachı, F. “Assessment of Radiation Therapy Positioning Margins”. Cumhuriyet Üniversitesi Fen Edebiyat Fakültesi Fen Bilimleri Dergisi 37 (November 2016), 27-32.
JAMA Kourtelı C, Benrachı F. Assessment of Radiation Therapy Positioning Margins. Cumhuriyet Üniversitesi Fen Edebiyat Fakültesi Fen Bilimleri Dergisi. 2016;37:27–32.
MLA Kourtelı, C. and F. Benrachı. “Assessment of Radiation Therapy Positioning Margins”. Cumhuriyet Üniversitesi Fen Edebiyat Fakültesi Fen Bilimleri Dergisi, vol. 37, 2016, pp. 27-32.
Vancouver Kourtelı C, Benrachı F. Assessment of Radiation Therapy Positioning Margins. Cumhuriyet Üniversitesi Fen Edebiyat Fakültesi Fen Bilimleri Dergisi. 2016;37:27-32.