Whether or not you can have a head MRI with a birth control ring in your body is related to the nature of the birth control ring, and if it is a metal ring, it is not allowed. 1. Non-metallic birth control rings: such as the Holland Ring and the Mannuelle Ring, these are non-metallic birth control rings and will not affect the MRI. 2. Metal IUDs: such as Indomethacin IUD, Copper T-type IUD and Copper V-type IUD, etc. When undergoing MRI, if there is metal in the body, it will be displaced due to the strong magnetic field, and the metal will also have a certain degree of interference with the magnetic field, which will affect the results of the examination. Therefore, it is recommended that before undergoing an MRI, it is necessary to consult a specialized physician in order to clarify whether or not the examinee meets the MRI examination regulations. If there are any other questions, it is recommended to consult a specialized doctor for guidance.