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자료유형
학술저널
저자정보
Lee, Jason Joon Bock (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) Choi, Jinhyun (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) Ahn, Sung Gwe (Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine) Jeong, Joon (Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine) Lee, Ik Jae (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) Park, Kwangwoo (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) Kim, Kangpyo (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine) Kim, Jun Won (Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine)
저널정보
대한방사선종양학회 Radiation oncology journal : ROJ Radiation oncology journal : ROJ 제35권 제2호
발행연도
2017.1
수록면
121 - 128 (8page)

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Purpose: To report the results of a correlation analysis of skin dose assessed by in vivo dosimetry and the incidence of acute toxicity. This is a phase 2 trial evaluating the feasibility of intraoperative radiotherapy (IORT) as a boost for breast cancer patients. Materials and Methods: Eligible patients were treated with IORT of 20 Gy followed by whole breast irradiation (WBI) of 46 Gy. A total of 55 patients with a minimum follow-up of 1 month after WBI were evaluated. Optically stimulated luminescence dosimeter (OSLD) detected radiation dose delivered to the skin during IORT. Acute toxicity was recorded according to the Common Terminology Criteria for Adverse Events v4.0. Clinical parameters were correlated with seroma formation and maximum skin dose. Results: Median follow-up after IORT was 25.9 weeks (range, 12.7 to 50.3 weeks). Prior to WBI, only one patient developed acute toxicity. Following WBI, 30 patients experienced grade 1 skin toxicity and three patients had grade 2 skin toxicity. Skin dose during IORT exceeded 5 Gy in two patients: with grade 2 complications around the surgical scar in one patient who received 8.42 Gy. Breast volume on preoperative images (p = 0.001), ratio of applicator diameter and breast volume (p = 0.002), and distance between skin and tumor (p = 0.003) showed significant correlations with maximum skin dose. Conclusions: IORT as a boost was well-tolerated among Korean women without severe acute complication. In vivo dosimetry with OSLD can help ensure safe delivery of IORT as a boost.

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