
Proceedings Paper
A sinogram based technique for image correction and removal of metal clip artifacts in cone beam breast CTFormat | Member Price | Non-Member Price |
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Paper Abstract
Cone beam CT (CBCT) technique provides true three-dimensional (3D) images of a breast; however, metal clips and
needles used for surgical planning can cause artifacts, which may extend to many adjacent slices, in the reconstructed
images obtained by the Feldkamp-Davis-Kress (FDK) filtered backprojection method,. In this paper, a sinogram
based method to remove the metal clips in the projection image data is described and discussed for improving the
quality of reconstructed breast images. First, the original projection data was reconstructed using the FDK algorithm
to obtain a volumetric image with metal clips and artifacts. Second, the volumetric image was segmented by using
the threshold method to obtain a 3D map of metal objects. Third, a forward projection algorithm is applied to the
metal object map to obtain projection map of metal objects. Finally, the original projection images and projection
map of metal objects are reorganized into sinograms for correction in the angular space on a pixel-by-pixel basis.
Cone beam CT images of a mastectomy breast specimen are used to demonstrate the feasibility of using this
technique for removal of metal object artifacts. Preliminary results have demonstrated that metal objects artifacts in
3D images were reduced and the image quality were improved.
Paper Details
Date Published: 19 March 2014
PDF: 8 pages
Proc. SPIE 9033, Medical Imaging 2014: Physics of Medical Imaging, 90332S (19 March 2014); doi: 10.1117/12.2043927
Published in SPIE Proceedings Vol. 9033:
Medical Imaging 2014: Physics of Medical Imaging
Bruce R. Whiting; Christoph Hoeschen, Editor(s)
PDF: 8 pages
Proc. SPIE 9033, Medical Imaging 2014: Physics of Medical Imaging, 90332S (19 March 2014); doi: 10.1117/12.2043927
Show Author Affiliations
T. Wang, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Y. Shen, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Y. Zhong, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Y. Shen, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Y. Zhong, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
C.-J. Lai, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
J. Wang, First Affilicated Hospital of Xinjiang Medical Univ. (China)
C. C. Shaw, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
J. Wang, First Affilicated Hospital of Xinjiang Medical Univ. (China)
C. C. Shaw, The Univ. of Texas M.D. Anderson Cancer Ctr. (United States)
Published in SPIE Proceedings Vol. 9033:
Medical Imaging 2014: Physics of Medical Imaging
Bruce R. Whiting; Christoph Hoeschen, Editor(s)
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