Advances in image and computer technologies have enabled the use of advanced techniques in the field of radiation oncology. Different imaging, methods and/or data obtained by the same imaging method with different dates require registration process to the reference dataset. Deformable registration performs scaling, and shearing, movements as well as translation and rotation movements. Thus, the differences between the images are minimised, and the accuracy of the applications is increased. In recent years, 3D-image-based brachytherapy has become more common with the aim to register images tor adaptive planning. In this step of the planning process, registration . algorithms can provide time and convenience by automatically transferring the defined contours to the registered image. This review examines studies on the use of deformable registration methods in gynecological brachytherapy.