What type of material is often used for cassette front in mammography?

In mammography, the front cover of the cassette is typically made from materials that allow for optimal imaging while also being lightweight and durable. Polystyrene and polycarbonate are frequently used for this purpose. Both materials have excellent transparency to the X-ray beams used in mammography, which is essential to ensure that as much diagnostic information as possible is captured on the film.

Polystyrene is valued for its good mechanical properties and clarity, making it suitable for receiving the X-rays without significant attenuation. Polycarbonate, on the other hand, offers high impact resistance and can endure the pressures and handling that come with radiographic procedures, thereby providing a sturdy barrier for the film or digital receptors inside the cassette.

Using both of these materials helps to strike a balance between weight, durability, and clarity, which is vital for producing high-quality mammographic images necessary for effective diagnosis and evaluation. Thus, the combination of polystyrene and polycarbonate maximizes the usability and effectiveness of mammographic cassettes.