A radiological method for the localization of intrauterine devices is suggested. The 1st step consists of taking a picture without any preparation, of the pelvic cavity. If there is no IUD is this area, one will obtain a picture of the whole abdomen. If the IUD is located in the pelvis, a traction on the cervix will most often allow to determine the intrauterine location of the device. In some cases, one has to perform a fractionated hysterography. The method gives the most reliable results. It is a very simple procedure which in most cases only necessitates 2 pictures and generally allows to avoid an hysterography. The echotomography is a more sophisticated procedure which generally allows the localization of the IUD. Other techniques include the double contrast hysterography and the pneumo-hysterography; these procedures however are rarely used.