A radiography acquisition system is a device that captures visual information and converts it into a digital image that can be processed by a computer. Radiography systems can use X-rays, gamma rays, or other types of ionizing or non-ionizing radiation to create images of the inside of an object. 
Here are some types of radiography acquisition systems:
Computed radiography (CR)
A digital replacement for conventional X-ray film radiography that uses imaging plates and a reader. CR systems are designed to reduce the need for consumables and speed up the image production process. 
Direct digital radiography
Images are registered directly in the detector without the use of an intermediate cassette. 
Computed tomography (CT)
A radiographic process that produces sectional images of the anatomy by measuring the attenuation of X-rays as they pass through a patient. 
Picture archiving and communication systems (PACS)
A software solution that allows users to administer the production, use, and sharing of X-ray images.