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The Effect of Patient Positioning (Prone or Supine) on the Dose Received by Small Bowel in Pelvic Radiotherapy in Rectal Cancer Patients; [L'effet De La Position Du Patient (Couche Ou Allonge) Sur La Dose Recue Par L'intestin Grele Lors De La Radiotherapie Pelvienne Chez Les Patients Atteints De Cancer Du Rectum] Publisher Pubmed



Esmati E1 ; Barzegartahamtan M2 ; Maddah A1 ; Alikhassi A3 ; Vaezzadeh V3 ; Mohammadpour R4
Authors
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Authors Affiliations
  1. 1. Radiation Oncology Research Center, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Clinical Research Center, Loghamn Hakim Hospital, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  3. 3. Cancer Institute, Imam Hospital, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Biostatistics, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran

Source: Cancer/Radiotherapie Published:2021


Abstract

Purpose: The small bowel is a main dose-limiting organ in pelvic radiotherapy in the patients with rectal cancer. Conventionally, pelvic radiotherapy of patients with rectal cancer is performed in the prone position. Material and Methods: Thirty-nine patients underwent CT planning scan in the treatment position (20 patients in prone position group and 19 patients in supine position group). After radiation treatment planning optimization, the volumes of the irradiated small intestines were investigated. Results: The volume of irradiated small bowel was higher in the supine position (mean difference; 36,274 cm3). However, it was not statistically significant (P value = 0.187) Conclusion: Supine position could be accepted for the patients undergoing preoperative rectal cancer chemo-radiation. © 2021 Societe francaise de radiotherapie oncologique (SFRO)