Title :
Mini-strip ionization chamber for γ-ray imaging
Author :
Solovov, V. ; Chepel, V. ; Lopes, M.I. ; Abrantes, J. ; Marques, R. Ferreira ; Policarpo, A.J.P.L.
Author_Institution :
LIP-Laboratorio de Instrum. e Fisica Exp. de Particulas, Univ. de Coimbra, Portugal
fDate :
2/1/2003 12:00:00 AM
Abstract :
We are developing a liquid xenon ionization chamber for single-photon radioisotope imaging in nuclear medicine. The chamber has a mini-strip plate made of glass substrate with metal strips deposited along two perpendicular directions. Here, we report on a version of this chamber with an additional grid, improved trigger capability and the development of the multichannel readout system based on highly integrated low-noise front-end electronics and dedicated data acquisition system. The average root mean square (rms) noise between 250 and 350 electrons has been achieved with the front-end electronics operated at the temperature of -100°C. The whole system was tested with 122 keV γ-rays from 57Co.
Keywords :
data acquisition; liquid ionisation chambers; radioisotope imaging; readout electronics; γ-ray imaging; 122 keV; 173 K; Xe; data acquisition; liquid Xe ionization chamber; mini-strip ionization chamber; nuclear medicine; rms noise; Data acquisition; Glass; Ionization chambers; Nuclear electronics; Nuclear medicine; Optical imaging; Radioactive materials; Root mean square; Strips; Xenon;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2002.807875
