Medical thermal dry image film is a graphic recording medium composed of a blue polyester substrate coated with a thermal layer and a protective layer. It generates images in thermal printers based on the differential thermal effects of the thermal print head. Currently, medical thermal dry image film is widely used in medical imaging applications such as CT scans, MRI, CR, and DR for recording purposes, serving as a basis for physician diagnosis and treatment. Typically composed of a polyester PET base, a thermal layer, and a protective layer.