Multimodal Image Reconstruction Using Supplementary Structural Information in Total Variation Regularization.
Author(s)
Kazantsev, D
Lionheart, WR
Withers, PJ
Lee, PD
Type
Journal Article
Abstract
In this paper, we propose an iterative reconstruction algorithm which uses available information from one dataset collected using one modality to increase the resolution and signal-to-noise ratio of one collected by another modality. The method operates on the structural information only which increases its suitability across various applications. Consequently, the main aim of this method is to exploit available supplementary data within the regularization framework. The source of primary and supplementary datasets can be acquired using complementary imaging modes where different types of information are obtained (e.g. in medical imaging: anatomical and functional). It is shown by extracting structural information from the supplementary image (direction of level sets) one can enhance the resolution of the other image. Notably, the method enhances edges that are common to both images while not suppressing features that show high contrast in the primary image alone. In our iterative algorithm we use available structural information within a modified total variation penalty term. We provide numerical experiments to show the advantages and feasibility of the proposed technique in comparison to other methods.
Date Issued
2014-08-21
Date Acceptance
2014-06-18
Citation
Sensing and Imaging, 2014, 15 (1)
ISSN
1557-2064
Publisher
Springer
Journal / Book Title
Sensing and Imaging
Volume
15
Issue
1
Copyright Statement
© The Author(s) 2014. This article is published with open access at Springerlink.com
License URL
Identifier
PII: 97
Subjects
Anatomical prior
Hybrid medical scanners
Hybrid modalities
Image fusion
Positron emission tomography
Structural prior
Publication Status
Published
Article Number
97