Medical X-ray imaging with energy windowing
Abstract
A photon counting pixel read-out chip for medical X-ray imaging with energy windowing is presented. It consists of 32×32 pixels of 200 μm×200 μm size, each of them contains two discriminators and two 18-bit counters. Both discriminator thresholds can be adjusted individually for good image homogeneity and a circuit has been designed to avoid threshold drift. Measurements on the noise behaviour, threshold variation and threshold drift are shown.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- June 2001
- DOI:
- 10.1016/S0168-9002(01)00395-3
- Bibcode:
- 2001NIMPA.465..229L
