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Title of Journal: Radiol Phys Technol

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Abbravation: Radiological Physics and Technology

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Springer Japan

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DOI

10.1007/s12574-010-0063-8

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1865-0341

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Iterative estimation of coherentscattering profil

Authors: Mitsuaki Terabe Hiroyuki Okamoto Kichiro Koshida
Publish Date: 2012/05/27
Volume: 5, Issue: 2, Pages: 237-247
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Abstract

The coherentscattering distribution is useful for characterization of materials in the medical field and obtaining this information from a given position in the object is a useful new diagnostic approach We propose a simpler geometric approach which requires only a singledirection Xray beam with no collimator in front of the detector This method iteratively estimates coherentscattering profiles from given positions along the beam path based on the projections positioned at different objecttodetector distances We confirmed the proposed calculation algorithm by numerical simulation and performed a simple experiment including attenuation correction The accuracy of matching with the original profiles was dependent on the number of iterations the distance between the first and second detectors the distance between two objects and the shape of the scattering profile Whereas multiple scattering was the main problem in the experiment the calculated scattering profiles matched well with the original profile This technique indicates the feasibility of developing a coherentscatter imaging system


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