Intra-fraction uncertainties of MRI guided brachytherapy in patients with cervical cancer
Radiotherapy and Oncology(2014)
摘要
Dosimetric intra-fraction uncertainties in MRI-guided brachytherapy were analysed for HR-CTV and OARs. While dose differences were generally small, individual outliers occurred. In contrast to HDR, patients treated with PDR show increased mean rectal dose over time. Re-imaging prior to dose delivery helps to detect unfavorable anatomical changes, and allows for intervention.
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关键词
High dose rate,Cervix,Rectum morbidity,Organ movement,Contouring,IGABT
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