A local region of interest image reconstruction via filtered backprojection for fan-beam differential phase-contrast computed tomography.

A local region of interest image reconstruction via filtered backprojection for fan-beam differential phase-contrast computed tomography. Research Abstract Details 

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A local region of interest image reconstruction via filtered backprojection for fan-beam differential phase-contrast computed tomography. Abstract Text:

Zhihua Qi,Guang-Hong Chen,

Recently, x-ray differential phase contrast computed tomography (DPC-CT) has been experimentally implemented using a conventional source combined with several gratings. Images were reconstructed using a parallel-beam reconstruction formula. However, parallel-beam reconstruction formulae are not directly applicable for a large image object where the parallel-beam approximation fails. In this note, we present a new image reconstruction formula for fan-beam DPC-CT. There are two major features in this algorithm: (1) it enables the reconstruction of a local region of interest (ROI) using data acquired from an angular interval shorter than 180 degrees + fan angle and (2) it still preserves the filtered backprojection structure. Numerical simulations have been conducted to validate the image reconstruction algorithm.

A local region of interest image reconstruction via filtered backprojection for fan-beam differential phase-contrast computed tomography. Publishing Authors By Initials

Z Qi,GH Chen,

For similar tomography, x-ray computed research abstracts see: tomography, x-ray computed research

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A local region of interest image reconstruction via filtered backprojection for fan-beam differential phase-contrast computed tomography. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Physics in medicine and biology

VOLUME: 52

Page Numbers: N417-23

Journal Abbreviation:

ISSN: 0031-9155

DAY: 4

MONTH: 09

YEAR: 2007

A local region of interest image reconstruction via filtered backprojection for fan-beam differential phase-contrast computed tomography. Information

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LANGUAGE: eng

NlmUniqueID: 401220

A local region of interest image reconstruction via filtered backprojection for fan-beam differential phase-contrast computed tomography. Keywords Mesh Terms:

KEYWORDS: Tomography, X-Ray Computed

MESH TERMS: methods

Chemical & Substance for Abstract: A local region of interest image reconstruction via filtered backprojection for fan-beam differential phase-contrast computed tomography. Information

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Grant and Affiliation Information for A local region of interest image reconstruction via filtered backprojection for fan-beam differential phase-contrast computed tomography.

AFFILIATION: Department of Medical Physics, University of Wisconsin in Madison, 600 Highland Avenue, Madison, WI 53792-1590, USA.

Country: England

AGENCY: United States NIBIB

GRANT: EB005712-2

ACRONYM: EB

MEDLINETA: Phys Med Biol

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