DocumentCode :
3565871
Title :
Front-end electronics for the RatCAP mobile animal PET scanner
Author :
Pratte, Jean-Fran?§ois ; De Geronimo, Gianluigi ; Junnarkar, Sachin ; O´Connor, Paul ; Yu, Bo ; Robert, St?©fan ; Radeka, Veljko ; Woody, Craig ; Stoll, Sean ; Vaska, Paul ; Lecomte, Roger ; Fontaine, R?©jean
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Volume :
1
fYear :
2003
Firstpage :
26
Abstract :
We report on the development of the front-end electronics for the RatCAP (Rat Conscious Animal PET), a portable and miniature Positron Emission Tomography scanner. The ASIC is realized in a CMOS 0.18 μm technology and it is composed of 32 channels of Charge Sensitive Preamplifier (CSP), 3rd order semi-gaussian bipolar shaper, timing discriminator with independent channel adjustable threshold and a 32-line address serial encoder to minimize the number of interconnections between the camera and the data acquisition system. Each chip has a maximum power dissipation of 125 mW. A mathematical model of the timing resolution as a function of the noise and slope at the discrimination point as well as the photoelectron statistics was developed and validated. So far, 3 ASIC prototypes implementing part of the electronics were sent to fabrication. Results from the characterization of the first two prototypes are presented and discussed.
Keywords :
CMOS integrated circuits; application specific integrated circuits; discriminators; nuclear electronics; positron emission tomography; timing circuits; 0.18 micron; 125 mW; ASIC; CMOS 0.18 μm technology; Charge Sensitive Preamplifier; RatCAP mobile animal PET scanner; address serial encoder; front-end electronics; independent channel adjustable threshold; miniature Positron Emission Tomography scanner; semi-gaussian bipolar shaper; timing discriminator; Animals; Application specific integrated circuits; CMOS image sensors; CMOS technology; Cameras; Positron emission tomography; Power system interconnection; Preamplifiers; Prototypes; Timing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
ISSN :
1082-3654
Print_ISBN :
0-7803-8257-9
Type :
conf
DOI :
10.1109/NSSMIC.2003.1351991
Filename :
1351991
Link To Document :
بازگشت