For our study we selected the Nova T 380, Mona Lisa Cu375 (identical to Multiload Cu 375), Gold Luna and the Chinese ring IUD for investigation. There is an ongoing and sometimes controversial debate concerning whether every IUD is safe to undergo MRI investigation, whether IUD placement must be checked after scanning or whether these devices may be dangerous for women during MRI. Although IUDs are considered as clinically safe, we could not find a publication describing the safety of IUDs made of different materials at higher MR field stengths, especially during MRI investigations.įrom a radiological point of view, the lack of safety information on a range of IUDs within a MRI magnet field, poses a relevant clinical problem for radiologists and gynecologists. Furthermore, existing publications focus on copper IUDs and have not systematically addressed IUDs that contain gold or steel. Most of these publications do not consider comprehensively measure relevant aspects such as heating, torque, magnetic force and artifacts on both 1.5T and 3T MRI systems. There is a paucity of publications that address the safety of IUDs during MR imaging. To our knowledge, there is only one international publication, which describes this ring from a radiological point of view. long lifespan of the Chinese ring, which is between 5 to 20 years, means that it may be left in-situ in some elder Chinese women. Although the production of this particular IUD was stopped in 2000, the.
One product that was widely used in the 1980’s (more than 90% of all IUDs used in China at that time) is made of stainless steel, and known as the “Chinese ring”. Many different types of IUDs have been in use in China. Until recently, there was a mandatory one-child policy in China, and the deployment of IUDs are therefore particular significant. In Asia, especially in China, recent estimates show that 44% of all Chinese women between 15–45 years of age use IUDs. In the United States of America and Europe, there is rising utilization of IUDs in about 2% and 6% of women respectively. As IUDs are clinically effective and their effects reversible by removal, many women choose IUD to prevent pregnancies. IUDs are of two general types, hormonal IUDs and metallic IUDs, the latter are usually made of copper or stainless steel.
The intrauterine device (IUD), a contraceptive method that is locally deployed into the uterine cavity, has been shown to effectively prevent pregnancies. With the rising global population in recent decades, effective contraceptive methods which are safe, reliable and cheap are needed for family planning.
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