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Titolo:
Reduction of irradiated small bowel volume and accurate patient positioning by use of a bellyboard device in pelvic radiotherapy of gynecological cancer patients
Autore:
Olofsen-Van Acht, M; van den Berg, H; Quint, S; de Boer, H; Seven, M; de Koste, JV; Creutzberg, C; Visser, A;
Indirizzi:
Univ Rotterdam Hosp, Daniel den Hoed Canc Ctr, Div Clin Phys & Instrumentat, Dept Radiat Oncol, NL-3075 EA Rotterdam, Netherlands Univ Rotterdam Hosp Rotterdam Netherlands NL-3075 EA terdam, Netherlands Univ Rotterdam Hosp, Daniel den Hoed Canc Ctr, Div Clin Phys & Instrumentat, NL-3075 EA Rotterdam, Netherlands Univ Rotterdam Hosp Rotterdam Netherlands NL-3075 EA terdam, Netherlands
Titolo Testata:
RADIOTHERAPY AND ONCOLOGY
fascicolo: 1, volume: 59, anno: 2001,
pagine: 87 - 93
SICI:
0167-8140(200104)59:1<87:ROISBV>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
3-DIMENSIONAL CONFORMAL RADIOTHERAPY; RADIATION-THERAPY; SMALL-INTESTINE; PROSTATE; FIELDS; SETUP; COMPLICATIONS; OMENTOPLASTY; INJURY;
Keywords:
gynecologic cancer; radiotherapy; small bowel toxicity; bellyboard; patient positioning;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Olofsen-Van Acht, M Univ Rotterdam Hosp, Daniel den Hoed Canc Ctr, Div Clin Phys & Instrumentat, Dept Radiat Oncol, Groene Hilledijk 301, NL-3075 EA Rotterdam, Netherlands Univ Rotterdam Hosp Groene Hilledijk 301 Rotterdam Netherlands NL-3075 EA
Citazione:
M. Olofsen-Van Acht et al., "Reduction of irradiated small bowel volume and accurate patient positioning by use of a bellyboard device in pelvic radiotherapy of gynecological cancer patients", RADIOTH ONC, 59(1), 2001, pp. 87-93

Abstract

Purpose: To reduce the volume of small bowel within pelvic treatment fields for gynecological cancer using a bellyboard device and to determine the accuracy of the prone treatment position. Materials and methods: Fifteen consecutive patients with a gynecologic malignancy who were treated with postoperative pelvic radiotherapy were selected for this study. The volume of small bowel within the treatment fields was calculated for both the supine and prone treatment positions. The patients were treated in the prone position in a so-called bellyboard device. During treatment sessions electronic portal images were obtained. An off-line setup verification and correction protocol was used and the setup accuracy of the positioning in the bellyboard was determined. Results: The average volume of small bowel within the treatment fields was229 cm(3) and 66 cm(3) in the supine and prone treatment, respectively, which means an average volume reduction in the prone position of 64% (95% CI 56-72%), as compared with the supine position. For thr position of the patient in the field, the systematic error defined by the standard deviation (SD) of the mean difference per patient between simulation and treatment images was 1.7 mm in the lateral direction, 2.1 mm in the craniocaudal direction and 1.7 mm in the ventrodorsal direction. On average, only 0.4 setup correction per patient was required to achieve this accuracy. The random day-to-day variations were 1.9 (1SD), 2.6 and 2.3 mm, respectively. Standard deviations of the systematic differences between patient positioning relative to the bellyboard were 6.2 mm in lateral direction and 9.1 mm in craniocaudal direction. Conclusions: Treatment of gynecological cancer patients in the prone position using a bellyboard reduces the volume of irradiated small bowel. An off-line verification and correction protocol ensures accurate patient positioning. Daily setup variations using the bellyboard were small (1 SD < 3 mm). Therefore for pelvic radiotherapy in patients with a gynecological malignancy, the use of a bellyboard is recommended. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 20:15:23