Sector analysis of dosimetry of prostate cancer patients treated with low-dose-rate brachytherapy
作者： Nicola J. Nasser , Yinkun Wang , Jette Borg , Elantholi P. Saibishkumar
DOI: 10.1016/J.BRACHY.2014.01.007
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摘要: Abstract Purpose Brachytherapy is an effective single treatment modality for low- and intermediate-risk prostate cancer. Here, we compare the radiation doses in different sectors between preimplant planning images postimplant dosimetry. Methods Materials Two hundred fifteen consecutive patients treated cancer by 125 I seed brachytherapy were assessed. Pretreatment plans using transrectal ultrasound of compared with dose calculated on posttreatment MRI CT scans obtained 1 month after implantation. Twelve generated dividing base, midgland, apex into four quadrants each. dosimetry 12 prostate. Results Average V 100 (percentage volume that receives 100% prescribed dose) was 99.9 ± 0.25% 94.8 ± 3.77% ( p >91% all sectors, except anterior base sector, which it 64.87 ± 20.96%. 1-month D 90 (the to 90% volume) 114.5 ± 10.55%. at lower higher Conclusions Our results show brachytherapy, a planned coverage.
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