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

Bärbel Kratz, Thorsten M. Buzug

Institute of Medical Engineering

15 Citations (Scopus)

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

TY - GEN

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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U2 - 10.1109/NSSMIC.2009.5401974

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

SP - 2720

EP - 2723

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

Abstract

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