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Women with breast cancer receiving simulation in prone and in supine position for adjuvant radiation treatment.

Prone and supine simulation

Vincent Vinh-Hung, MD, PhD

The study purpose is to evaluate whether or not clinical characteristics of women with breast cancer can predict which position for radiation treatment, prone or supine, will be associated with a dosimetry gain. Dosimetry gain in this study means the lowest radiation dose to non-target organs (heart, lungs, contralateral breast), while giving the prescribed dose to tumor bed and ipsilateral breast.

Retrospectively identify women who received curative radiation treatment after breast conserving cancer surgery, in whom simulation in prone and in supine position was performed. Compare the treatment plans for doses to targets and to non-target organs, according to clinical parameters of body mass index, size of breast, location of tumor and side. Furthermore, evaluate whether a single CT slide is enough or not to predict a dosimetry advantage.

Prone Breast Radiotherapy Treatment Planning Observational Study

Retrospective Dosimetric Study of Prone Radiotherapy for Breast Cancer

Evaluate the dosimetry gain in subgroups classified according to body mass index, size of breast, side and location of tumor.

Computations of doses and verification of physics charts.

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization
Prone Breast Radiotherapy Treatment Planning Observational Study	NCT02237469	Breast Cancer F...	Prone and supin...	18 Years -	University Hospital, Geneva
Prone Breast Radiotherapy Treatment Planning Observational Study	NCT02237469	Breast Cancer F...	Prone and supin...	18 Years -	University Hospital, Geneva
Prone Breast Radiotherapy Treatment Planning Observational Study	NCT02237469	Breast Cancer F...	Prone and supin...	18 Years -	University Hospital, Geneva

Spots Global Cancer Trial Database for breast conserving surgery.