Metal artifact reduction in computed tomography using nonequispaced fourier transform

Bärbel Kratz; Thorsten M. Buzug

doi:10.1109/NSSMIC.2009.5401974

Metal artifact reduction in computed tomography using nonequispaced fourier transform

Institute of Medical Engineering

Abstract

Metal objects in the field of view of a computed tomography (CT) scanner cause several artifacts inside the reconstructed image. By reducing the influence of these metallic objects the image quality can be enhanced. We propose a metal artifact reduction (MAR) method based on interpolation using Nonequispaced Fast Fourier Transforms (NFFT). By damping the transformation additional a priori knowledge may be included during the interpolation step. The results are reconstructed with a weighted maximum likelihood expectation maximization algorithm (λ-MLEM) and finally compared to two common one dimensional polynomial interpolation methods.

Original language	English
Title of host publication	2009 IEEE Nuclear Science Symposium Conference Record (NSS/MIC)
Number of pages	4
Publisher	IEEE
Publication date	01.12.2009
Pages	2720-2723
Article number	5401974
ISBN (Print)	978-1-4244-3962-1, 978-1-4244-3961-4
DOIs	https://doi.org/10.1109/NSSMIC.2009.5401974
Publication status	Published - 01.12.2009
Event	2009 IEEE Nuclear Science Symposium Conference Record - Orlando, United States Duration: 25.10.2009 → 31.10.2009 Conference number: 79860

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10.1109/NSSMIC.2009.5401974

Cite this

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title = "Metal artifact reduction in computed tomography using nonequispaced fourier transform",

abstract = "Metal objects in the field of view of a computed tomography (CT) scanner cause several artifacts inside the reconstructed image. By reducing the influence of these metallic objects the image quality can be enhanced. We propose a metal artifact reduction (MAR) method based on interpolation using Nonequispaced Fast Fourier Transforms (NFFT). By damping the transformation additional a priori knowledge may be included during the interpolation step. The results are reconstructed with a weighted maximum likelihood expectation maximization algorithm (λ-MLEM) and finally compared to two common one dimensional polynomial interpolation methods.",

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note = "2009 IEEE Nuclear Science Symposium Conference Record <br/>, NSS/MIC 2009 ; Conference date: 25-10-2009 Through 31-10-2009",

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Kratz, B & Buzug, TM 2009, Metal artifact reduction in computed tomography using nonequispaced fourier transform. in 2009 IEEE Nuclear Science Symposium Conference Record (NSS/MIC)., 5401974, IEEE Nuclear Science Symposium Conference Record, IEEE, pp. 2720-2723, 2009 IEEE Nuclear Science Symposium Conference Record
, Orlando, Florida, United States, 25.10.09. https://doi.org/10.1109/NSSMIC.2009.5401974

Metal artifact reduction in computed tomography using nonequispaced fourier transform. / Kratz, Bärbel; Buzug, Thorsten M.
2009 IEEE Nuclear Science Symposium Conference Record (NSS/MIC). IEEE, 2009. p. 2720-2723 5401974 (IEEE Nuclear Science Symposium Conference Record).

Research output: Chapters in Books/Reports/Conference Proceedings › Conference contribution › peer-review

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T1 - Metal artifact reduction in computed tomography using nonequispaced fourier transform

AU - Kratz, Bärbel

AU - Buzug, Thorsten M.

N1 - Conference code: 79860

PY - 2009/12/1

Y1 - 2009/12/1

N2 - Metal objects in the field of view of a computed tomography (CT) scanner cause several artifacts inside the reconstructed image. By reducing the influence of these metallic objects the image quality can be enhanced. We propose a metal artifact reduction (MAR) method based on interpolation using Nonequispaced Fast Fourier Transforms (NFFT). By damping the transformation additional a priori knowledge may be included during the interpolation step. The results are reconstructed with a weighted maximum likelihood expectation maximization algorithm (λ-MLEM) and finally compared to two common one dimensional polynomial interpolation methods.

AB - Metal objects in the field of view of a computed tomography (CT) scanner cause several artifacts inside the reconstructed image. By reducing the influence of these metallic objects the image quality can be enhanced. We propose a metal artifact reduction (MAR) method based on interpolation using Nonequispaced Fast Fourier Transforms (NFFT). By damping the transformation additional a priori knowledge may be included during the interpolation step. The results are reconstructed with a weighted maximum likelihood expectation maximization algorithm (λ-MLEM) and finally compared to two common one dimensional polynomial interpolation methods.

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DO - 10.1109/NSSMIC.2009.5401974

M3 - Conference contribution

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SN - 978-1-4244-3961-4

T3 - IEEE Nuclear Science Symposium Conference Record

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BT - 2009 IEEE Nuclear Science Symposium Conference Record (NSS/MIC)

PB - IEEE

T2 - 2009 IEEE Nuclear Science Symposium Conference Record <br/>

Y2 - 25 October 2009 through 31 October 2009

ER -

Metal artifact reduction in computed tomography using nonequispaced fourier transform

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