NDLI: Comparison between parallel hole and rotating slat collimation

Content Provider	IEEE Xplore Digital Library
Author	Zhou, Lin Defrise, Michel Vunckx, Kathleen Nuyts, Johan
Copyright Year	2008
Description	Author affiliation: Dept. of Nuclear Medicine, V.U.Brussel, B-1090, Belgium (Defrise, Michel) \|\| Dept. of Nuclear Medicine, K.U.Leuven, B-3000, Belgium (Zhou, Lin; Vunckx, Kathleen; Nuyts, Johan)
Abstract	In this study, we compared the performance of parallel hole (PH) and rotating slat (RS) collimations at equal spatial resolution. Based on mathematical calculations, we derived the linear relationship between the optimal collimator aperture and the target spatial resolution for each collimator, and calculated the gain in signal-to-noise ratio (RS over PH) for the central point of a homogeneous symmetrical phantom using these optimized collimator parameters. These results were supported by an efficient analytical Fisher information-based method. The collimations were compared for both planar imaging and volume imaging. The main results are: 1) For the same target resolution, the optimal system resolution depends on the collimator and the imaging mode (planar or volume). 2) RS has lower variance than PH when the object is smaller than the detector.
Starting Page	5530
Ending Page	5539
File Size	197764
Page Count	10
File Format	PDF
ISBN	9781424427147
ISSN	10957863
DOI	10.1109/NSSMIC.2008.4774503
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-19
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Collimators Image reconstruction Spatial resolution Apertures Image resolution Imaging phantoms Detectors Image quality Signal to noise ratio Information analysis
Content Type	Text
Resource Type	Article

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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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