NDLI: A very-high resolution SPECT system based on the energy-resolved photon counting CdTe detectors

Content Provider	IEEE Xplore Digital Library
Author	Cai, L. Fu, G. Tan, J.W. Meng, L.J.
Copyright Year	2010
Description	Author affiliation: Department of Nuclear, Plasma and Radiological Engineering, the University of Illinois at Urbana Champaign (Cai, L.; Fu, G.; Tan, J.W.; Meng, L.J.)
Abstract	This paper presents preliminary experimental results obtained with a prototype SPECT system for small animal studies. This system is based on novel energy-resolved photon counting (ERPC) detectors we have recently developed for gamma ray imaging applications. The ERPC detector has basic modular configuration that offers an overall detection area of 4.5 cm × 4.5 cm, comprising of eight CdTe/CMOS detector hybrids. Each hybrid has a CdTe detector of 11 mm × 22 mm bump-bonded onto a dedicated readout ASIC that has 32 × 64 readout pixels with 350 μm pitch size. The 1mm and 2mm thickness CdTe detector have both been developed. This configuration offers a very-high spatial resolution of around 350 μm and an excellent energy resolution of around 3∼4 keV at 140 keV. The prototype SPECT system that consists of two or four ERPC detectors is mounted on a system gantry rotating around a horizontal axis. The detectors are coupled to apertures with differently sized pinholes. In order to utilize the imaging information provided by the ERPC detector, we have developed a comprehensive system modelling and calibration method that accounts for the irregular shapes and physical details in the collimation apertures. Detailed system design and experimental procedures will be described in this paper.
Starting Page	2788
Ending Page	2792
File Size	2481899
Page Count	5
File Format	PDF
ISBN	9781424491063
ISSN	10957863
e-ISBN	9781424491056
DOI	10.1109/NSSMIC.2010.5874300
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Pixel Apertures Energy resolution Photonics Prototypes SPECT Energy-resolved photon counting detector
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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