Assessment of transposed ovarian movement: how much of a safety margin should be added during pelvic radiotherapy?
Bottom Line: The 95% RI in the corresponding directions were 1.5, 2.0, 1.7, 1.2, 1.9 and 1.2 cm, respectively.These data suggest that bilateral ovaries need a PRV margin of ∼2 cm in all directions.The present study suggests that a transposed ovary needs the same PRV margin as a normal ovary (∼2 cm).
Affiliation: Department of Radiology and Radiation Oncology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minamiku, Sagamihara, Kanagawa 252-0374, Japan email@example.com.Show MeSH
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Mentions: CT images including transposed ovaries were superimposed on other CT images acquired at different times, and were matched on bony structures. The first CT after ovarian transposition was defined as the reference image data. The center of the ovary was used as a representative position for each ovary. The differences in ovarian position relative to bony structures between CT images were analyzed using the treatment planning system (Pinnacle; Philips, Fitchburg, WI, USA; Fig. 1). A total of 123 images were analyzed.Fig. 1.
Affiliation: Department of Radiology and Radiation Oncology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minamiku, Sagamihara, Kanagawa 252-0374, Japan firstname.lastname@example.org.