In-vivo study of gluteal vein caliber and anatomy to improve safety in gluteal augmentation

The specific aims of this study are to conduct an in-vivo evaluation of gluteal veins and their large tributaries in different body positions (prone, supine, lateral decubitus) using MRI to determine whether positioning has any significant effect on their caliber. We also aim to describe the locations of the large tributaries and the course of the main trunks of the gluteal veins in relation to the bony landmarks to assist in avoiding these structures during large-volume gluteal lipofilling.