A new denoising method for dynamic contrast-enhanced MRI

Yaniv Gal, Andrew Mehnert, Andrew Bradley, Kerry McMahon, Dominic Kennedy, Stuart Crozier

Research output: Chapter in Book/Conference paperConference paper

2 Citations (Scopus)

Abstract

This paper presents a new algorithm for denoising dynamic contrast-enhanced (DCE) MR images. The algorithm is called Dynamic Non-Local Means and is a novel variation on the Non-Local Means (NL-Means) algorithm. It exploits the redundancy of information in the DCE-MRI sequence of images. An evaluation of the performance of the algorithm relative to six other denoising algorithms-Gaussian filtering, the original NL-Means algorithm, bilateral filtering, anisotropic diffusion filtering, the wavelets adaptive multiscale products threshold method, and the traditional wavelet thresholding method-is also presented. The evaluation was performed by two groups of expert observers-18 signal/image processing experts, and 9 clinicians (8 radiographers and 1 radiologist)-using real DCE-MRI data. The results of the evaluation provide evidence, at the α=0.05 level of significance, that both groups of observers deem the DNLM algorithm to perform visually better than all of the other algorithms.

Original languageEnglish
Title of host publicationProceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08
Pages847-850
Number of pages4
Publication statusPublished - 1 Dec 2008
Externally publishedYes
Event30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08 - Vancouver, BC, Canada
Duration: 20 Aug 200825 Aug 2008

Conference

Conference30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08
CountryCanada
CityVancouver, BC
Period20/08/0825/08/08

Fingerprint Dive into the research topics of 'A new denoising method for dynamic contrast-enhanced MRI'. Together they form a unique fingerprint.

  • Cite this

    Gal, Y., Mehnert, A., Bradley, A., McMahon, K., Kennedy, D., & Crozier, S. (2008). A new denoising method for dynamic contrast-enhanced MRI. In Proceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08 (pp. 847-850). [4649286]