High temporal and spatial resolution 4D MRA using spiral data sampling and sliding window reconstruction Academic Article uri icon

Overview

MeSH Major

  • Arteriosclerosis
  • Image Processing, Computer-Assisted
  • Leg
  • Magnetic Resonance Angiography

abstract

  • Contrast-enhanced magnetic resonance angiography (CE-MRA) requires high spatial resolution to demonstrate detailed vasculature and high temporal resolution to capture the contrast bolus. Sparse bright voxels in MRA permit substantial undersampling in MRI data acquisition, allowing simultaneous high temporal and spatial resolution. We developed a time-resolved 3D MRA technique using the efficient spiral sampling trajectory, and performed off-resonance corrections using inhomogeneity field maps. View sharing and sliding window reconstruction were utilized to generate high temporal resolution. High-resolution 3D angiograms were generated at 1-2 s per frame, with a 5-8 ml gadolinium dose, in patients with vascular disease.

publication date

  • July 2004

Research

keywords

  • Academic Article

Identity

Language

  • eng

Digital Object Identifier (DOI)

  • 10.1002/mrm.20167

PubMed ID

  • 15236361

Additional Document Info

start page

  • 14

end page

  • 8

volume

  • 52

number

  • 1