High resolution T2-weighted imaging of the human brain using surface coils and an analytical reception profile correction

Journal of Magnetic Resonance Imaging : JMRI
S E MoyherD B Vigneron

Abstract

High spatial resolution T2-weighted MR images of the human brain were obtained at 1.5 T. An optimized fast spin-echo (FSE) sequence and 1.5 g/cm gradients were used to obtain T2-weighted images in 4 to 9 minutes with an in-plane resolution of .27 mm and slice thicknesses from 1.5 to 3 mm. Phased arrays of surface coils were used as receivers, providing increased sensitivity but image intensities dependent on the reception profile of the coils. This image nonuniformity was removed by analyzing the data with a theoretical intensity correction algorithm developed in this laboratory. The FSE sequences, the specialized phased arrays of surface coils, and the intensity correction algorithm allowed improved visualization of nerves within the inner auditory canals and surface anatomy of the cerebral cortex. It is expected that this technique will be useful for clinical applications that require high resolution imaging of small, superficial structures of the brain.

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Citations

Jul 22, 1999·NMR in Biomedicine·S J NelsonW P Dillon
Jan 22, 2000·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·T K TranR Hurd
Aug 4, 1998·Journal of Neurosurgery·T YokoyamaK Sugiyama
Nov 23, 2000·The British Journal of Radiology·N RobertsV McNulty
Sep 18, 2007·Journal of Magnetic Resonance·Assaf Tal, Lucio Frydman
Aug 9, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Ze WangJohn A Detre
Jul 31, 2001·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·S J Nelson
Dec 10, 1999·Journal of Computer Assisted Tomography·R E BurgessP M Robitaille
Feb 20, 1999·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·S M NoworolskiD B Vigneron

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