Variable field of view for spatial resolution improvement in continuously moving table magnetic resonance imaging

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An approach is described in which the field of view (FOV) along the Y (right/left) phase encoding direction can be dynamically altered during a continuously moving table (CMT) coronal acquisition for extended FOV MRI. We hypothesize that with this method, regions of the anatomy exhibiting significantly different lateral widths can be imaged with a matching local FOVY, thereby improving local lateral spatial resolution, k-space raw data from the variable-FOV CMT acquisition do not allow simple Fourier reconstruction due to the presence of a mixture of phase encodes sampled at different ΔkY intervals. In this work, we employ spline interpolation to re-register the mixed data set onto a uniformly sampled k-space grid. Using this interpolation scheme, we present phantom and peripheral contrast-enhanced MR angiography results demonstrating an approximate 45% improvement in local lateral spatial resolution for continuously moving table acquisitions.

Original languageEnglish (US)
Pages (from-to)146-151
Number of pages6
JournalMagnetic Resonance in Medicine
Volume54
Issue number1
DOIs
StatePublished - Jul 2005

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Anatomy
Angiography
Magnetic Resonance Imaging
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Keywords

  • Continuously moving table
  • k-space interpolation
  • Peripheral contrast-enhanced MRA
  • Spatial resolution
  • Variable field of view

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Variable field of view for spatial resolution improvement in continuously moving table magnetic resonance imaging. / Hu, Houchun H.; Madhuranthakam, Ananth J.; Kruger, David G.; Glockner, James; Riederer, Stephen J.

In: Magnetic Resonance in Medicine, Vol. 54, No. 1, 07.2005, p. 146-151.

Research output: Contribution to journalArticle

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