计算机放射成像（Computed Radiography，简称CR），是利用影像板（IP）代替胶片，将储存在IP上的X线信号通过激光扫描从而转换为电信号进行数字图像处理的一种技术。这种技术多用于放射科的普通X光片检查，可以使放射平片检查形成数字化。

Computed radiography (CR) uses very similar equipment to conventional radiography except that in place of a film to create the image, an imaging plate (IP) made of photostimulable phosphor is used. The imaging plate is housed in a special cassette and placed under the body part or object to be examined and the x-ray exposure is made. Hence, instead of taking an exposed film into a darkroom for developing in chemical tanks or an automatic film processor, the imaging plate is run through a special laser scanner, or CR reader, that reads and digitizes the image. The digital image can then be viewed and enhanced using software that has functions very similar to other conventional digital image-processing software, such as contrast, brightness, filtration and zoom.