Lead-lined X-ray doors are designed for ionizing radiation shielding in medical imaging rooms, such as CT rooms, X-ray rooms and examination rooms. The doors incorporate a lead core with a thickness adapted to the requirements of the medical physicist and the radiation level in the facility. The door structure ensures full shielding continuity between the frame and the door leaf, to prevent radiation leakage outside the examination room. The doors are designed with a clean and aesthetic design that integrates into the medical environment, while meeting strict safety requirements. The doors are supplied in a hinged door or sliding door configuration, and include an integral lead core in varying thicknesses according to shielding requirements. The door frame is made of solid wood or composite material, with the option of decorative or stainless steel cladding. The engineering structure ensures full shielding continuity in the frames and lower threshold, to prevent radiation leakage. Heavy doors can be equipped with an electromechanical drive system, which includes battery backup and a manual emergency operating mechanism.