Reconstruction of 3D dynamic contrast-enhanced magnetic resonance imaging using nonlocal means

Ganesh Adluru, Tolga Tasdizen, Matthias Schabel, Edward V R Dibella

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Purpose To develop and test a nonlocal means-based reconstruction algorithm for undersampled 3D dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) of tumors. Materials and Methods We propose a reconstruction technique that is based on the recently proposed nonlocal means (NLM) filter which can relax trade-offs in spatial and temporal resolutions in dynamic imaging. Unlike the original application of NLM for image denoising, the MR reconstruction framework here can offer high-quality images from undersampled k-space data. The method is based on enforcing similarity constraints in terms of neighborhoods of pixels rather than individual pixels. The method was applied on undersampled 3D DCE imaging of breast and brain tumor datasets and the results were compared to sliding window reconstructions and to a compressed sensing method using total variation constraints on the images. Results Undersampling factors of up to five were obtained with the proposed approach while preserving the spatial and temporal characteristics. The NLM reconstruction method offered improved performance over the sliding window and the total variation constrained reconstruction techniques. Conclusion The reconstruction framework here can give high-quality images from undersampled DCE MRI data and has the potential to improve the quality of DCE tumor imaging.

Original languageEnglish (US)
Pages (from-to)1217-1227
Number of pages11
JournalJournal of Magnetic Resonance Imaging
Volume32
Issue number5
DOIs
StatePublished - Nov 2010
Externally publishedYes

Fingerprint

Magnetic Resonance Imaging
Brain Neoplasms
Neoplasms
Breast Neoplasms

Keywords

  • compressed sensing
  • DCE MRI
  • nonlocal means
  • reconstruction
  • undersampling

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Reconstruction of 3D dynamic contrast-enhanced magnetic resonance imaging using nonlocal means. / Adluru, Ganesh; Tasdizen, Tolga; Schabel, Matthias; Dibella, Edward V R.

In: Journal of Magnetic Resonance Imaging, Vol. 32, No. 5, 11.2010, p. 1217-1227.

Research output: Contribution to journalArticle

Adluru, Ganesh ; Tasdizen, Tolga ; Schabel, Matthias ; Dibella, Edward V R. / Reconstruction of 3D dynamic contrast-enhanced magnetic resonance imaging using nonlocal means. In: Journal of Magnetic Resonance Imaging. 2010 ; Vol. 32, No. 5. pp. 1217-1227.
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