Loading [a11y]/accessibility-menu.js
Directional View Interpolation for Compensation of Sparse Angular Sampling in Cone-Beam CT | IEEE Journals & Magazine | IEEE Xplore

Directional View Interpolation for Compensation of Sparse Angular Sampling in Cone-Beam CT


Abstract:

In flat detector cone-beam computed tomography and related applications, sparse angular sampling frequently leads to characteristic streak artifacts. To overcome this pro...Show More

Abstract:

In flat detector cone-beam computed tomography and related applications, sparse angular sampling frequently leads to characteristic streak artifacts. To overcome this problem, it has been suggested to generate additional views by means of interpolation. The practicality of this approach is investigated in combination with a dedicated method for angular interpolation of 3-D sinogram data. For this purpose, a novel dedicated shape-driven directional interpolation algorithm based on a structure tensor approach is developed. Quantitative evaluation shows that this method clearly outperforms conventional scene-based interpolation schemes. Furthermore, the image quality trade-offs associated with the use of interpolated intermediate views are systematically evaluated for simulated and clinical cone-beam computed tomography data sets of the human head. It is found that utilization of directionally interpolated views significantly reduces streak artifacts and noise, at the expense of small introduced image blur.
Published in: IEEE Transactions on Medical Imaging ( Volume: 28, Issue: 7, July 2009)
Page(s): 1011 - 1022
Date of Publication: 06 January 2009

ISSN Information:

PubMed ID: 19131294

References

References is not available for this document.