An Iterative Reconstruction for Tomosynthesis Imaging Using Non-Local Means

ERTAŞ M., YILDIRIM I., KAMASAK M. E., AKAN A.

2014 IEEE International Conference on Imaging Systems and Techniques, IST-2014, Santorini, Greece, 14 - 17 October 2014, pp.1-4, (Full Text)

  • Publication Type: Conference Paper / Full Text
  • City: Santorini
  • Country: Greece
  • Page Numbers: pp.1-4
  • Istanbul University-Cerrahpasa Affiliated: No

Abstract

 

This paper proposes a new 3D iterative
reconstruction method for reducing out-of-focus slice blur in
tomosynthesis imaging by combining two powerful denoising
methods. The methods used in the reconstruction are based on
Total Variation (TV) minimization and Non-Local Means (NLM)
filtering. A new method (ART+TV)NLM is introduced by
adapting both methods to Algebraic reconstruction technique
(ART) which is one of the most commonly used iterative method
in limited angle tomographic imaging. Simulations were
performed on a designed 3D phantom. The method is shown to
be more effective by keeping SNR higher and RMSE values lower
compared to the ART and ART+TV reconstructions.