Normal tissue dose and second cancer risk due to megavoltage fan-beam CT,static tomotherapy and helical tomotherapy in breast radiotherapy |
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| Authors: | Alexandra Quinn,Lois Holloway,Nicholas Hardcastle,Wolfgang A. Tomé ,Anatoly Rosenfeld,Peter Metcalfe |
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| Affiliation: | 1. Northern Sydney Cancer Centre, Royal North Shore Hospital, Australia;2. Centre for Medical Radiation Physics, University of Wollongong, Australia;3. Liverpool Cancer Therapy Centre, Liverpool Hospital, Australia;4. School of Physics, University of Sydney, Australia;5. Ingham Institute of Applied Medical Research, Liverpool, Australia;6. South West Clinical School, School of Medicine, University of New South Wales, Australia;g Department of Physical Sciences, Peter MacCallum Cancer Centre, East Melbourne, Australia;h Department of Human Oncology, University of Wisconsin-Madison, USA;i Department of Medical Physics, University of Wisconsin-Madison, USA;j Institute of Oncophysics, Albert Einstein College of Medicine of Yeshiva University, Bronx, USA |
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| Abstract: | This study investigates the dose from the 1 mm collimator width megavoltage fan-beam CT (fine, normal and coarse pitch) available on tomotherapy as well as for whole-breast tomotherapy treatments. The BEIR VII lifetime attributable risk model was utilised to assess the significance of the imaging dose relative to the treatment dose. |
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| Keywords: | Breast Cancer risk Dose Megavoltage CT Tomotherapy |
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