Document Detail


Non-diverging analytic expression for the on-axis sensitivity of converging collimators: analytic derivation.
MedLine Citation:
PMID:  17047277     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The expressions for the sensitivity of converging collimators found in the literature diverge at points near the focal locus of the collimator. In this paper, an analytical formula that does not diverge is derived and compared to that available in the literature. An analysis is provided to predict the cases in which use of the new formula is advisable. Since the first expression derived is rather complex, approximations were made to reach simpler formulae. The formulae derived can be used to define and extend the realm of applicability of the literature expression in the cases identified in their derivation.
Authors:
R Accorsi; S D Metzler
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2006-10-17
Journal Detail:
Title:  Physics in medicine and biology     Volume:  51     ISSN:  0031-9155     ISO Abbreviation:  Phys Med Biol     Publication Date:  2006 Nov 
Date Detail:
Created Date:  2006-10-18     Completed Date:  2007-01-12     Revised Date:  2007-12-03    
Medline Journal Info:
Nlm Unique ID:  0401220     Medline TA:  Phys Med Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  5675-96     Citation Subset:  IM    
Affiliation:
Department of Radiology, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA. accorsi@email.chop.edu
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MeSH Terms
Descriptor/Qualifier:
Computer Simulation
Equipment Design
Image Processing, Computer-Assisted / methods*
Models, Statistical
Models, Theoretical
Monte Carlo Method
Reproducibility of Results
Sensitivity and Specificity
Tomography, Emission-Computed, Single-Photon / instrumentation*,  methods
Grant Support
ID/Acronym/Agency:
R01-EB-001809/EB/NIBIB NIH HHS; R01-EB-001910/EB/NIBIB NIH HHS; R33-EB-001543/EB/NIBIB NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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