A new approach for CT image reconstruction with asymmetric configuration

Lifeng Yu; Xiaochuan Pan; Charles A. Pelizzari; Patrick J. La Rivière; Tinsu Pan

doi:10.1117/12.483537

A new approach for CT image reconstruction with asymmetric configuration

Lifeng Yu, Xiaochuan Pan, Charles A. Pelizzari, Patrick J. La Rivière, Tinsu Pan

Radiology

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

We developed a novel algorithm for image reconstruction from fan-beam data acquired with asymmetric flat-panel detectors. This new algorithm can improve the noise properties of the widely used fan-beam filtered-backprojection (FFBP) algorithm by eliminating the spatially-variant weighting factor while retaining FFBP's favorable resolution properties. Quantitative results verify the theoretical prediction of the improved noise properties. These improved noise properties can be translated into a reduction of radiation dose. The new algorithm is particularly robust and useful when applied to CT systems with large field of measurement (FOM) and/or relatively small focal lengths.

Original language	English (US)
Pages (from-to)	1911-1917
Number of pages	7
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5032 III
DOIs	https://doi.org/10.1117/12.483537
State	Published - 2003
Event	Medical Imaging 2003: Image Processing - San Diego, CA, United States Duration: Feb 17 2003 → Feb 20 2003

Keywords

Computed tomography
Image reconstruction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.483537

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title = "A new approach for CT image reconstruction with asymmetric configuration",

abstract = "We developed a novel algorithm for image reconstruction from fan-beam data acquired with asymmetric flat-panel detectors. This new algorithm can improve the noise properties of the widely used fan-beam filtered-backprojection (FFBP) algorithm by eliminating the spatially-variant weighting factor while retaining FFBP's favorable resolution properties. Quantitative results verify the theoretical prediction of the improved noise properties. These improved noise properties can be translated into a reduction of radiation dose. The new algorithm is particularly robust and useful when applied to CT systems with large field of measurement (FOM) and/or relatively small focal lengths.",

keywords = "Computed tomography, Image reconstruction",

author = "Lifeng Yu and Xiaochuan Pan and Pelizzari, {Charles A.} and {La Rivi{\`e}re}, {Patrick J.} and Tinsu Pan",

year = "2003",

doi = "10.1117/12.483537",

language = "English (US)",

volume = "5032 III",

pages = "1911--1917",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

note = "Medical Imaging 2003: Image Processing ; Conference date: 17-02-2003 Through 20-02-2003",

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TY - JOUR

T1 - A new approach for CT image reconstruction with asymmetric configuration

AU - Yu, Lifeng

AU - Pan, Xiaochuan

AU - Pelizzari, Charles A.

AU - La Rivière, Patrick J.

AU - Pan, Tinsu

PY - 2003

Y1 - 2003

N2 - We developed a novel algorithm for image reconstruction from fan-beam data acquired with asymmetric flat-panel detectors. This new algorithm can improve the noise properties of the widely used fan-beam filtered-backprojection (FFBP) algorithm by eliminating the spatially-variant weighting factor while retaining FFBP's favorable resolution properties. Quantitative results verify the theoretical prediction of the improved noise properties. These improved noise properties can be translated into a reduction of radiation dose. The new algorithm is particularly robust and useful when applied to CT systems with large field of measurement (FOM) and/or relatively small focal lengths.

AB - We developed a novel algorithm for image reconstruction from fan-beam data acquired with asymmetric flat-panel detectors. This new algorithm can improve the noise properties of the widely used fan-beam filtered-backprojection (FFBP) algorithm by eliminating the spatially-variant weighting factor while retaining FFBP's favorable resolution properties. Quantitative results verify the theoretical prediction of the improved noise properties. These improved noise properties can be translated into a reduction of radiation dose. The new algorithm is particularly robust and useful when applied to CT systems with large field of measurement (FOM) and/or relatively small focal lengths.

KW - Computed tomography

KW - Image reconstruction

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U2 - 10.1117/12.483537

DO - 10.1117/12.483537

M3 - Conference article

AN - SCOPUS:0042421758

SN - 0277-786X

VL - 5032 III

SP - 1911

EP - 1917

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Medical Imaging 2003: Image Processing

Y2 - 17 February 2003 through 20 February 2003

ER -

A new approach for CT image reconstruction with asymmetric configuration

Abstract

Keywords

ASJC Scopus subject areas

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