NDLI: Performance evaluation of Compton based camera for high energy gamma ray imaging

Content Provider	IEEE Xplore Digital Library
Author	Li Han Clinthorne, N.H.
Copyright Year	2005
Abstract	The imaging performance of Compton scattering based gamma-ray camera and Anger camera with high energy general purpose (HEGP) collimator, in terms of spatial resolution, variance of reconstructed image and detection sensitivity for high-energy 364.4 Kev photons of 1-131, are evaluated by modified uniform Cramer-Rao bound and Monte Carlo Simulation. Compared to the conventional collimated gamma-ray camera, the electronically collimated camera has the potential for superior imaging quality due to its improved counting efficiency and spatial resolution for I-131 radiotracers. The simulation platform for the Compton imaging system and conventional SPECT are realized on GEANT4 and GATE (Geant4 application for topographic emission), respectively. In the Compton imaging system, the first scattering detector - electronic collimator has 32times16 silicon pads with dimension of 1.4 mm times 1.4 mm times 1.0 mm (widthtimeslengthtimesthickness); the second absorption detector is modeled as a NaI scintillation detector with thickness of 9.5 mm. A conventional sodium iodide SPECT camera is also simulated using GATE with crystal thickness of 9.5 mm and 381 mm times 508 mm field of view. The preliminary study demonstrates that the modeled Compton camera is more efficient than the conventional collimated camera for 364.4 KeV photons with higher sensitivity about 30times. Meanwhile, for the same desired PSF, the Compton camera has lower variance than the conventional Anger camera with HEGP collimator
Starting Page	2561
Ending Page	2565
File Size	433680
Page Count	5
File Format	PDF
ISBN	0780392213
ISSN	10957863
DOI	10.1109/NSSMIC.2005.1596861
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-23
Publisher Place	Puerto Rico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cameras Nuclear imaging Optical imaging High-resolution imaging Electromagnetic scattering Particle scattering Optical collimators Spatial resolution Single photon emission computed tomography Solid scintillation detectors
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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