Prospective Evaluation of Intrafractional and Interfractional Cervical Motion During External Beam Radiation for Intact Cervical Cancer by the Calypso® 4D Localization System™

The purpose of this study is to find out how the cervix normally moves during radiation treatment. This study will also evaluate how cervical cancer shrinks during chemotherapy and radiation. By better understanding these two things, the investigators can see if radiation could safely be given in a more focused way in the future. The investigational portion of this study includes (1) daily cone beam CT scans to confirm transponder placement and evaluate tumor changes during treatment and (2) tracking movement of the cervix during daily radiation treatment.