Improved blood suppression in three-dimensional (3D) fast spin-echo (FSE) vessel wall imaging using a combination of double inversion-recovery (DIR) and diffusion sensitizing gradient (DSG) preparations.

Journal of Magnetic Resonance Imaging : JMRI
Mahender K MakhijaniKrishna S Nayak

Abstract

To provide improved blood suppression in three-dimensional inner-volume fast spin-echo (3D IV-FSE) carotid vessel wall imaging by using a hybrid preparation consisting of double inversion-recovery (DIR) and diffusion sensitizing gradients (DSG). Multicontrast black-blood MRI is widely used for vessel wall imaging and characterization of atherosclerotic plaque composition. Blood suppression is difficult when using 3D volumetric imaging techniques. DIR approaches do not provide robust blood suppression due to incomplete replacement of blood spins, and DSG approaches compromise vessel wall signal, reducing the lumen-wall contrast-to-noise ratio efficiency (CNR(eff)). In this work a hybrid DIR+DSG preparation is developed and optimized for blood suppression, vessel wall signal preservation, and vessel-wall contrast in 3D IV-FSE imaging. Cardiac gated T(1)-weighted carotid vessel wall images were acquired in five volunteers with 0.5 x 0.5 x 2.5 mm(3) spatial resolution in 80 seconds. Data from healthy volunteers indicate that the proposed method yields a statistically significant (P < 0.01) improvement in blood suppression and lumen-wall CNR(eff) compared to standard DIR and standard DSG methods alone. A combination of DIR and DSG p...Continue Reading

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Citations

Mar 13, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Ronald MooiweerHans Hoogduin
Dec 1, 2011·Journal of Magnetic Resonance Imaging : JMRI·Wenbo LiuWilliam S Kerwin
Oct 28, 2011·Journal of Magnetic Resonance Imaging : JMRI·Ronald van 't KloosterRob J van der Geest
Apr 21, 2012·Journal of Magnetic Resonance Imaging : JMRI·Subashini SrinivasanReza Nezafat
May 21, 2011·Journal of Magnetic Resonance Imaging : JMRI·Ryan BrownJoel Morrisett
Mar 29, 2014·Journal of Magnetic Resonance Imaging : JMRI·Petter DyverfeldtDavid Saloner
Feb 2, 2018·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Zhe WuJianhui Zhong

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