Nicky HGM Peters1, 2,
Gail Horan3, Deborah Gregory3, Li Tee Tan3,
1Radiology, University Medical Center Utrecht, Utrecht, Netherlands; 2Radiology, Addenbrookes Hospital, Cambridge, Cambridghire, United Kingdom; 3Oncology, Addenbrookes Hospital, Cambridge, Cambridghire, United Kingdom
With the technical advances in radiotherapy, treatment can be planned on MRI examinations on which the ovaries can be clearly depicted. We assessed the extent of ovarian movement on consecutive pelvic MRI examinations in patients that underwent pelvic radiotherapy for a gynaecological malignancy to provide a safety volume around the ovaries accounting for ovarian movement. Adding a safety volume around the ovaries of 32 cm3 and 57 cm3 for the left and right ovary respectively could reduce the high radiation dose to the ovaries during pelvic radiotherapy and resulting infertility and premature menopause could possibly be avoided.