Normal tissue dose and second cancer risk due to megavoltage fan-beam CT, static tomotherapy and helical tomotherapy in breast radiotherapy

作者：Quinn Alexandra^*; Holloway Lois; Hardcastle Nicholas; Tome Wolfgang A; Rosenfeld Anatoly; Metcalfe Peter

来源：Radiotherapy and Oncology, 2013, 108(2): 266-268.

DOI：10.1016/j.radonc.2013.05.019

• Breast
• Cancer risk
• Dose
• Megavoltage CT
• Tomotherapy

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.

• 出版日期2013-8