Title :
Digital x-ray scanner based on monolithic line of semi-insulating GaAs radiation detectors
Author :
Dubecky, F. ; Scepko, P. ; Zatko, B. ; Sekerka, V. ; Necas, V. ; Sekacova, M. ; Hudec, M. ; Perd´ochova, A. ; Bohacek, P.
Abstract :
In the present work developed X-ray digital portable scanner operating in "quantum" imaging mode with improved dynamic range in contrast of the observed X-ray images is demonstrated Detection unit is based on semi-insulating GaAs strip line detectors with pitch 0.25 mm and absorption length of strip 1.25 mm with detection efficiency over 60 % for detection of 60 keV photons at a bias of 200 V Readout electronics consists of 480 channels dc coupled with detectors. Scanned area has dimensions 12x15 cm2. Collected data are used for creation of X-ray "quantum" images of selected test objects using the developed imaging software.
Keywords :
Gallium arsenide; Image storage; Optical imaging; Radiation detectors; Radiology; Spatial resolution; Strips; X-ray detection; X-ray detectors; X-ray imaging;
Conference_Titel :
Advanced Semiconductor Devices and Microsystems, 2004. ASDAM 2004. The Fifth International Conference on
Conference_Location :
Smolenice Castle, Slovakia
Print_ISBN :
0-7803-8335-7
DOI :
10.1109/ASDAM.2004.1441148
