Journal ArticleDOI
FLASH imaging rapid NMR imaging using low flip-angle pulses
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TLDR
A new method for rapid NMR imaging dubbed FLASH ( fast low-a ngle sh ot) imaging is described which allows measuring times of the order of 1 s (64 × 128 pixel resolution) or 6 s (256 × 256 pixels), resulting in about a 100-fold reduction in measuring time without sacrificing spatial resolution.About:
This article is published in Journal of Magnetic Resonance.The article was published on 1986-04-01. It has received 1227 citations till now. The article focuses on the topics: Pulse sequence & Flip angle.read more
Citations
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Neurophysiological investigation of the basis of the fMRI signal
TL;DR: These findings suggest that the BOLD contrast mechanism reflects the input and intracortical processing of a given area rather than its spiking output, and that LFPs yield a better estimate of BOLD responses than the multi-unit responses.
PatentDOI
Simultaneous acquisition of spatial harmonics (SMASH): ultra-fast imaging with radiofrequency coil arrays
TL;DR: SiMultaneous Acquisition of Spatial Harmonics (SMASH) as mentioned in this paper is a partially parallel imaging strategy, which is readily integrated with many existing fast imaging sequences, yielding multiplicative time savings without a significant sacrifice in spatial resolution or signal-to-noise ratio.
Journal ArticleDOI
Three-dimensional magnetization-prepared rapid gradient-echo imaging (3D MP RAGE)
TL;DR: A new three‐dimensional imaging technique which is applicable for 3D MR imaging throughout the body is introduced and high‐quality 3D image sets of the abdomen and head are acquired.
Journal ArticleDOI
Biological magnetic resonance imaging using laser-polarized 129Xe
Mitchell S. Albert,Gordon D. Cates,Bastiaan Driehuys,William Happer,Brian Saam,Charles Jr Springer,Arnold Wishnia +6 more
TL;DR: It is shown that 129Xe gas can be used for high-resolution MRI when the nuclear-spin polarization of the atoms is increased by laser optical pumping and spin exchange, which produces hyperpolarized 129xe, in which the magnetization is enhanced by a factor of about 105.
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Susceptibility-weighted imaging: technical aspects and clinical applications, part 1.
TL;DR: Susceptibility-weighted imaging (SWI) is a new neuroimaging technique, which uses tissue magnetic susceptibility differences to generate a unique contrast, different from that of spin density, T1, T2, and T2*.
References
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Journal ArticleDOI
Image Formation by Induced Local Interactions: Examples Employing Nuclear Magnetic Resonance
TL;DR: An image of an object may be defined as a graphical representation of the spatial distribution of one or more of its properties as a result of interaction with a matter or radiation field characterized by a wavelength comparable to or smaller than the smallest features to be distinguished.
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Spin warp NMR imaging and applications to human whole-body imaging.
Abstract: Describes a new nuclear magnetic resonance (NMR) imaging technique which the authors call 'spin warp imaging' and gives examples of its application to human whole-body imaging. The apparatus is based on a four-coil, air cored magnet (made by the Oxford Instrument Company) capable of accepting the whole human body. The magnet produces a static field of 0.04 T giving a proton NMR frequency of 1.7 MHz. The maximum field inhomogeneity is about 6*10-4 at a radius of 0.23 m, approximately twice the amount theoretically attainable with this configuration. The pulse sequence used is shown.
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Stimulated echo imaging
TL;DR: In this article, a new form of NMR imaging using stimulated echoes is described, dubbed STEAM (sti modulated e cho acquisition m ode) imaging, which turns out to become a versatile tool for multipurpose NMR images.