In preparation to change treatment planning systems for gynecological intracavitary insertion dosimetry, 3 patients were planned on 3 systems. The GE Target II, BrachyVision, and ADAC Pinnacle were the systems used. The dose distributions to several points of interest were calculated and compared. We analyzed the data sets to assess the differences and found that they were insignificant, mostly due to human error during digitization and calculation rounding.