한국의학물리학회지:의학물리 (Progress in Medical Physics)

  • 제34권1호
  • /
  • Pages.10-13
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  • 2023
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  • 2508-4445(pISSN)
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  • 2508-4453(eISSN)
한국의학물리학회 (Korean Society of Medical Physics)
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Clinical Impact of Patient's Head Position in Supraclavicular Irradiation of the Whole Breast Radiotherapy

  • Surega Anbumani (Department of Radiation Oncology, HCG Bangalore Institute of Oncology) ;
  • Lohith G. Reddy (Department of Radiation Oncology, HCG Bangalore Institute of Oncology) ;
  • Priyadarshini V (Department of Radiation Oncology, HCG Bangalore Institute of Oncology) ;
  • Sasikala P (Department of Radiation Oncology, HCG Bangalore Institute of Oncology) ;
  • Ramesh S. Bilimagga (Department of Radiation Oncology, HCG Bangalore Institute of Oncology)
  • 투고 : 2022.10.24
  • 심사 : 2023.02.05
  • 발행 : 2023.03.31
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초록

Patients with breast cancer can be positioned with their head turned to the contra lateral side or with their head straight during the radiation therapy treatment set-up. In our hospital, patients with locally advanced breast cancer who were receiving radiation therapy have experienced swallowing difficulty after 2 weeks of irradiation. In this pilot study, the impact of head position on reducing dysphagia occurrence was dosimetrically evaluated. Patients were divided into two groups viz., HT (head turned to the contra lateral side of the breast) and HS (head straight) with 10 members in each. Treatment planning was performed, and the dosimetric parameters such as Dmin, Dmax, Dmean, V5, V10, V20, V30, V40, and V50 of both groups were extracted from the dose volume histogram (DVH) of esophagus. The target coverage in the supraclavicular fossa (SCF) region was analyzed using D95 and D98; moreover, the dose heterogeneity was assessed with D2 from the DVHs. The average values of the dose volume parameters were 27.6%, 58.6%, 35.4%, 19%, 13.8%, 14.1%, 11.8%, 8.4%, and 8.1% higher in the HT group compared with those in the HS group. Furthermore, for the SCF, the mean values of D98, D95, and D2 were 42.4, 47.5, and 54 Gy, respectively, in the HS group and 38.9, 45.35, and 55.5 Gy, respectively, in the HT group. This pilot study attempts to give a solution for the poor quality of life of patients after breast radiotherapy due to dysphagia. The findings confirm that the head position could play a significant role in alleviating esophageal toxicity without compromising tumor control.

키워드

과제정보

The authors would like to thank all fellow colleagues in Radiation Oncology department, Bangalore Institute of Oncology (A unit of Healthcare Global Enterprises Ltd.,), India.

참고문헌

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