Combination of 2D sensitivity encoding and 2D partial Fourier techniques for improved acceleration in 3D contrast-enhanced MR angiography

Houchun H. Hu, Ananth J. Madhuranthakam, David G. Kruger, James F. Glockner, Stephen J. Riederer

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

Sensitivity encoding (SENSE) and partial Fourier (PF) techniques both reduce MRI acquisition time. Two-dimensional SENSE uses coil sensitivities to unfold aliasing in the phase/ slice-encoding plane. One-dimensional PF and homodyne reconstruction are routinely applied in the frequency/phase-encoding plane to compensate for nonsampled k-space of the presumed real magnetization. Recently, a modified 3D elliptical centric acquisition was proposed to facilitate 2D-PF and homodyne reconstruction on an undersampled phase/slice-encoding plane. In this work we hypothesized that this 2D-PF technique can be combined with 2D-SENSE to achieve a greater acceleration factor than what each method can provide separately. Reconstruction of data whereby SENSE and PF are applied along the same axes is described. Contrast-enhanced MR angiography (CE-MRA) results from experiments using four receiver coils in phantom and volunteer studies are shown. In 11 volunteer studies, the SENSE-PF-homodyne technique using sevenfold acceleration (4× SENSE, 1.7× PF) consistently provided high-diagnostic-quality images with near 1-mm isotropic resolution in acquisition times of <20 s.

Original languageEnglish (US)
Pages (from-to)16-22
Number of pages7
JournalMagnetic Resonance in Medicine
Volume55
Issue number1
DOIs
Publication statusPublished - Jan 2006

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Keywords

  • 2D-homodyne
  • 2D-partial Fourier
  • 2D-SENSE
  • Contrast-enhanced MR angiography
  • Fast MRI

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

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