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Efficient 4D Non-local Tensor Total-Variation for Low-Dose CT Perfusion Deconvolution

  • Ruogu Fang
  • Ming Ni
  • Junzhou Huang
  • Qianmu Li
  • Tao Li
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9601)

Abstract

Tensor total variation deconvolution has been recently proposed as a robust framework to accurately estimate the hemodynamic parameters in low-dose CT perfusion by fusing the local anatomical structure correlation and the temporal blood flow continuation. However the locality property in the current framework constrains the search for anatomical structure similarities to the local neighborhood, missing the global and long-range correlations in the whole anatomical structure. This limitation has led to the noticeable absence or artifacts of delicate structures, including the critical indicators for the clinical diagnosis of cerebrovascular diseases. In this paper, we propose an extension of the TTV framework by introducing 4D non-local tensor total variation into the deconvolution to bridge the gap between non-adjacent regions of the same tissue classes. The non-local regularization using tensor total variation term is imposed on the spatio-temporal flow-scaled residue functions. An efficient algorithm and the implementation of the non-local tensor total variation (NL-TTV) reduce the time complexity with the fast similarity computation, the accelerated optimization and parallel operations. Extensive evaluations on the clinical data with cerebrovascular diseases and normal subjects demonstrate the importance of non-local linkage and long-range connections for the low-dose CT perfusion deconvolution.

Keywords

Compute Tomography Perfusion Arterial Input Function Search Window Tissue Class Finite Difference Operator 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Ruogu Fang
    • 1
  • Ming Ni
    • 2
  • Junzhou Huang
    • 3
  • Qianmu Li
    • 2
  • Tao Li
    • 1
  1. 1.School of Computing and Information SciencesFlorida International UniversityMiamiUSA
  2. 2.School of Computer Science and EngineeringNanjing University of Science and TechnologyNanjingChina
  3. 3.Department of Computer Science and EngineeringUniversity of Texas at ArlingtonArlingtonUSA

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