Why is image compression often required in a mammography examination?

Image compression in a mammography examination is often required primarily to enable Teleradiography. This practice involves the transfer of digital images for remote viewing and interpretation, which necessitates a reduction in file size without significantly compromising the quality of the image. By compressing the images, they can be transmitted over networks more efficiently, allowing healthcare professionals to access them quickly regardless of their location.

While other factors such as enhancing spatial resolution, reducing radiation dose, and improving image contrast are important in the overall imaging process, they are not the primary reasons for implementing image compression. Compression specifically addresses the technical needs of digital imaging and data transmission, making it a key aspect in modern radiographic practices.