Title :
Performance of submillimeter CdZnTe strip detectors
Author :
Doty, F.P. ; Butler, J.F. ; Hink, P.L. ; Macri, J.R.
Author_Institution :
DIGIRAD, San Diego, CA, USA
Abstract :
We report results of a study undertaken to experimentally determine the achievable spatial resolution of monolithic cadmium zinc telluride (CZT) arrays. It was demonstrated that CZT arrays can produce direct electronic X-ray images with fine spatial resolution and high detection efficiency. For low X-ray energies useful for imaging soft tissue such as the breast, 50 micron resolution with virtually 100% detection efficiency were demonstrated, while for higher energy X-rays where fluorescence dominates the signal spreading, 100 micron resolution was demonstrated. Due to electrostatic effects of small anodes, improved charge deficit tailing and pulse rise time results are observed for strips as well as pixels
Keywords :
X-ray detection; biomedical imaging; semiconductor counters; 100 micron; 50 micron; CdZnTe; CdZnTe strip detectors; X-ray images; anodes; breast; charge deficit tailing; detection efficiency; low X-ray energies; monolithic; pixels; pulse rise time; soft tissue; spatial resolution; submillimeter; Cadmium compounds; Energy resolution; Image resolution; Signal resolution; Spatial resolution; Strips; X-ray detection; X-ray detectors; X-ray imaging; Zinc compounds;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-3180-X
DOI :
10.1109/NSSMIC.1995.504181
