PPT Slide
Digital imaging The transmitted x-ray pattern is recorded by a digital detector at discrete spatial intervals (pixels) and intensities are represented by digital values. Data Storage & Image Display - Digital images are stored in computer memory. - Digital imaging techniques allow for enhancement of details and efficient image processing. - Automatic pattern recognition is often possible.
+ Linear response ( film : restricted latitude ; over-exposure; under- exposure)
+ Digital image processing ? High spatial resolution
+ Efficient absorption of X-rays
+ No film treatment (Tdevelop~ minutes)
- Field-of-view mammography:18x24 cm2
1) M.J. Yaffe and J.A. Rowland, X-ray detectors for digital radiography , Phys. Med. Biol., 42, 1-39 (1997)
2) M. Säbel and H. Aichinger, Recent developments in breast imaging, Phys. Med. Biol., 41, 315-368, (1996)