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Proceedings Paper

Novel method for reducing high-attenuation object artifacts in CT reconstructions
Author(s): Laigao Michael Chen; Yun Liang; George A. Sandison; Jonas Rydberg
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Paper Abstract

A new method to reduce the streak artifacts caused by high attenuation objects in CT images has been developed. The key part of this approach is a preprocessing procedure based on the raw projection data using an adaptive scaling-plus-filtering method. The procedure is followed by the conventional filtered-back projection to reconstruct artifact-reduced images. Phantom and clinical studies have demonstrated that the proposed method can effectively reduce the streak artifacts caused by high attenuation objects for different anatomical structures and metal materials while still faithfully reproduce the positions and dimensions of the metal objects. The visualization of tissue features adjacent to metal objects is greatly improved. The proposed method is computational efficient and can be easily adapted to the current commercial CT scanners.

Paper Details

Date Published: 9 May 2002
PDF: 10 pages
Proc. SPIE 4684, Medical Imaging 2002: Image Processing, (9 May 2002); doi: 10.1117/12.467232
Show Author Affiliations
Laigao Michael Chen, Purdue Univ. School of Health Sciences (United States)
Yun Liang, Indiana Univ. Medical School (United States)
George A. Sandison, Purdue Univ. School of Health Sciences (Canada)
Jonas Rydberg, Indiana Univ. Medical School (United States)


Published in SPIE Proceedings Vol. 4684:
Medical Imaging 2002: Image Processing
Milan Sonka; J. Michael Fitzpatrick, Editor(s)

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