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

Volume

50

Issue

1

fYear

2003

fDate

2/1/2003 12:00:00 AM

Firstpage

122

Lastpage

125

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;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2002.807875

Filename

1178700