NDLI: Optimization of pinhole collimator for small animal SPECT using Monte Carlo simulation

Content Provider	IEEE Xplore Digital Library
Author	Tae Yong Song Yong Choi Yong Hyun Chung Jin Ho Jung Yearn Seong Choe Kyung-Han Lee Sang Eun Kim Byung-Tae Kim
Copyright Year	2003
Description	Author affiliation: Sch. of Medicine, Sung Kyun Kwan Univ., Seoul, South Korea (Tae Yong Song; Yong Choi; Yong Hyun Chung; Jin Ho Jung; Yearn Seong Choe; Kyung-Han Lee; Sang Eun Kim; Byung-Tae Kim)
Abstract	The aim of this study is to design an optimized pinhole collimator using Monte Carlo simulation for the development of an ultra high-resolution SPECT using a position sensitive photo-multiplier tube. Simulations using Monte Carlo N-Particle Transport code, version 4c were performed to model the pinhole SPECT system. The simulation geometries consist of a cone-shaped pinhole collimator with tungsten aperture and a NaI(Tl) scintillation crystal with 6 mm thickness and 120 mm diameter. Spatial resolution, sensitivity, edge penetration and scatter fraction were simulated by changing pinhole diameter and channel height. The optimal ranges of pinhole diameter and channel height were determined from trade-off curves and from sensitivity, penetration and scatter fraction. Trade-off curves of sensitivity and resolution allowed to determine that the optimal range of pinhole diameter was from 1 mm to 1.5 mm. The penetration and scatter fraction curve indicated that the channeled aperture is preferable over knife-edge. The optimal range of channel height was from 0.3 mm to 0.6 mm. The results demonstrate that the pinhole collimator designed in this study could be utilized to perform ultra high-resolution small animal imaging.
Starting Page	811
Ending Page	815
File Size	1001797
Page Count	5
File Format	PDF
ISBN	0780376366
DOI	10.1109/NSSMIC.2002.1239449
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-11-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Collimators Animals Scattering Apertures Spatial resolution Design optimization Monte Carlo methods Solid modeling Geometry Tungsten
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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