title: Current technological clinical practice in breast radiotherapy; results of a survey in EORTC-Radiation Oncology Group affiliated institutions.
abstract: OBJECTIVE
  To evaluate the current technological clinical practice of radiation therapy of the breast in institutions participating in the EORTC-Radiation Oncology Group (EORTC-ROG).
  
  
  METHODS
  A survey was conducted between August 2008 and January 2009 on behalf of the Breast Working Party within the EORTC-ROG. The questionnaire comprised 32 questions on 4 main topics: fractionation schedules, treatment planning methods, volume definitions and position verification procedures.
  
  
  RESULTS
  Sixty-eight institutions out of 16 countries responded (a response rate of 47%). The standard fraction dose was generally 2Gy for both breast and boost treatment, although a 2.67 Gy boost fraction dose is routinely given in British institutions. The main boost modality was electrons in 55%, photons in 47% and brachytherapy in 3% of the institutions (equal use of photon and electron irradiation in 5% of the institutions). All institutions used CT-based treatment planning. Wide variations are seen in the definition of the breast and boost target volumes, with margins around the resection cavity, ranging from 0 to 30 mm. Inverse planned IMRT is available in 27% and breath-hold techniques in 19% of the institutions. The number of patients treated with IMRT and breath-hold varied per institution. Electronic portal imaging for patient set-up is used by 92% of the institutions.
  
  
  CONCLUSIONS
  This survey provides insight in the current practice of radiation technology used in the treatment of breast cancer among institutions participating in EORTC-ROG clinical trials.
authors.affiliation: Department of Radiation Oncology, University Medical Center Groningen/University of Groningen, Groningen, The Netherlands. h.p.van.der.laan@rt.umcg.nl
authors.forename: Hans Paul
authors.initials: HP
authors.lastname: van der Laan
authors.forename: Coen W
authors.initials: CW
authors.lastname: Hurkmans
authors.forename: Abraham
authors.initials: A
authors.lastname: Kuten
authors.forename: Helen A
authors.initials: HA
authors.lastname: Westenberg
mesh_terms: D001943:Breast Neoplasms / Q000532:radiotherapy*; D005060:Europe; D005260:Female; D006306:Health Surveys; D049674:History, 21st Century; D006801:Humans; D011829:Radiation Dosage; D012955:Societies, Medical; D011795:Surveys and Questionnaires