Intensity Inhomogeneity Correction of Magnetic Resonance Images using Patches.
Intensity Inhomogeneity Correction of Magnetic Resonance Images using Patches.
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DOI:
10.1117/12.877466
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发表时间:
2011-03-11
期刊:
影响因子:
--
通讯作者:
Prince JL
中科院分区:
文献类型:
--
作者:
Roy S;Carass A;Bazin PL;Prince JL
This paper presents a patch-based non-parametric approach to the correction of intensity inhomogeneity from magnetic resonance (MR) images of the human brain. During image acquisition, the inhomogeneity present in the radio-frequency coil, is usually manifested on the reconstructed MR image as a smooth shading effect. This artifact can significantly deteriorate the performance of any kind of image processing algorithm that uses intensities as a feature. Most of the current inhomogeneity correction techniques use explicit smoothness assumptions on the inhomogeneity field, which sometimes limit their performance if the actual inhomogeneity is not smooth, a problem that becomes prevalent in high fields. The proposed patch-based inhomogeneity correction method does not assume any parametric smoothness model, instead, it uses patches from an atlas of an inhomogeneity-free image to do the correction. Preliminary results show that the proposed method is comparable to N3, a current state of the art method, when the inhomogeneity is smooth, and outperforms N3 when the inhomogeneity contains non-smooth elements.
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影响因子:
10.6
作者:
Sled, JG;Zijdenbos, AP;Evans, AC
通讯作者:
Evans, AC
影响因子:
5.7
作者:
Van de Moortele PF;Auerbach EJ;Olman C;Yacoub E;Uğurbil K;Moeller S
通讯作者:
Moeller S
DOI:
10.1117/12.844575
发表时间:
2010
期刊:
Proceedings of SPIE--the International Society for Optical Engineering
影响因子:
--
作者:
Roy S;Carass A;Prince JL
通讯作者:
Prince JL
影响因子:
7.6
作者:
Hou Z
通讯作者:
Hou Z
影响因子:
1.8
作者:
Freeman, WT;Jones, TR;Pasztor, EC
通讯作者:
Pasztor, EC