Title :
A medical imaging microstrip gas counter
Author :
Barasch, E.F. ; Altunbas, M.C. ; Bednarek, D. ; Condit, W. ; DelBalso, A.M. ; Knab, J.R. ; Maier, M.R. ; Rudin, S.
Author_Institution :
Dept. of Radiol., State Univ. of New York, Buffalo, NY, USA
Abstract :
Presents the inaugural results in the development of a dedicated medical imaging MSGC. Utilizing a standard 200 μm pitch pattern (80 μm cathodes, 10 μm anodes) on 1 mm thick D263 glass and a 1 cm drift region, the authors obtained energy resolutions of 27.3% FWHM [full width at half maximum] and 17.7% FWHM in P-10 and Argon/Ethane/DME [78.5/20/1.5], respectively using an 55Fe source. Gas gains of 399 in P-10 and 1.297 in Argon/Ethane/DME were achieved. Large energy depositions from 109Cd, 57Co, 129I photons did not induce breakdown in Argon/Ethane/DME at moderate cathode strip voltage (Vc+-549 volts)
Keywords :
biomedical equipment; gamma-ray detection; radioisotope imaging; -549 V; 10 mum to 1 cm; 55Fe source; Ar; Cd; Co; D263 glass; Fe; I; cathode strip voltage; drift region; full width at half maximum; gas gains; medical imaging microstrip gas counter; medical instrumentation; pitch pattern; Anodes; Argon; Biomedical imaging; Breakdown voltage; Cathodes; Counting circuits; Energy resolution; Glass; Iron; Microstrip;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2000 IEEE
Conference_Location :
Lyon
Print_ISBN :
0-7803-6503-8
DOI :
10.1109/NSSMIC.2000.949391
