Improved venous suppression and spatial resolution with SENSE in elliptical centric 3D contrast-enhanced MR angiography

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Houchun H HuS L Riederer

Abstract

The elliptical centric (EC) view order samples a 3DFT acquisition from the center of k-space outward, and when applied to contrast-enhanced MR angiography (CE-MRA) provides intrinsic venous suppression. This is because the veins enhance several seconds after the scan is initiated, and are thus encoded solely by noncentral k-space frequencies. A separate method, sensitivity encoding (SENSE), accelerates the k-space sampling rate by reducing the phase FOV or, equivalently, by increasing the k-space sampling interval, and has been used to increase spatiotemporal resolution. We hypothesized that by combining SENSE with EC, sampling of central k-space would be accelerated and the k-space radius at which the veins first showed contrast enhancement would be increased over a reference scan, thus providing improved venous suppression and spatial resolution without additional scan time. This hypothesis was studied with the use of phantom and carotid CE-MRA experiments, and the results demonstrated an approximate 25% reduction in venous signal when SENSE was used.

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Citations

Nov 30, 2005·Topics in Magnetic Resonance Imaging : TMRI·Tim Leiner
Sep 15, 2005·Radiographics : a Review Publication of the Radiological Society of North America, Inc·James F GlocknerKevin King
Mar 11, 2016·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Rajesh KrishnamurthyRaja Muthupillai
May 28, 2009·Journal of Magnetic Resonance Imaging : JMRI·Marcel Koenigkam-SantosDiego Martin
May 25, 2011·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Joshua D TrzaskoArmando Manduca
Jul 31, 2013·Journal of Magnetic Resonance Imaging : JMRI·Eric G StinsonStephen J Riederer
Mar 2, 2013·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Paul T WeaversStephen J Riederer
Oct 18, 2011·NeuroImage·Jürgen Hennig
Jan 10, 2019·Physics in Medicine and Biology·Shengzhen TaoMatt A Bernstein
Sep 24, 2005·Annals of Neurology·Jean Marie U-King-ImJonathan H Gillard
Nov 30, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Ananth J MadhuranthakamStephen J Riederer
Dec 13, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Houchun H HuStephen J Riederer
Feb 14, 2006·Journal of Magnetic Resonance Imaging : JMRI·Kiaran P McGeeJohn Huston

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