منابع مشابه
Echo-planar imaging.
Echo-planar imaging is a fast magnetic resonance (MR) imaging technique that allows acquisition of single images in as little as 20 msec and performance of multiple-image studies in as little as 20 seconds. Echo-planar imaging achieves its speed by obtaining all spatial-encoding information after a single radio-frequency (RF) excitation. Conventional imaging requires multiple-RF excitations, se...
متن کاملReferenceless interleaved echo-planar imaging.
Interleaved echo-planar imaging (EPI) is an ultrafast imaging technique important for applications that require high time resolution or short total acquisition times. Unfortunately, EPI is prone to significant ghosting artifacts, resulting primarily from system time delays that cause data matrix misregistration. In this work, it is shown mathematically and experimentally that system time delays...
متن کاملParallel Line-scan Echo-planar Spectroscopic Imaging
Y. Bito, T. Shirai, S. Hirata, Y. Taniguchi, K. Hirata, Y. Otake, Y. Soutome, H. Ochi, T. Ebisu, Y. Kawai, M. Umeda, T. Higuchi, and C. Tanaka Central Research Laboratory, Hitachi, Ltd., Kokubunji-shi, Tokyo, Japan, Neurosurgery, Nantan General Hospital, Kyoto, Japan, Medical Informatics, Meiji University of Integrative Medicine, Kyoto, Japan, Neurosurgery, Meiji University of Integrative Medic...
متن کاملEcho-Planar Cardiac MRI using Parallel Imaging
Since it’s original proposal by Mansfield et al. in 1977 [1], echo-planar imaging (EPI) has had a key role in the evolution of cardiac MRI. EPI involves the rapid acqusition of k-space data in a raster-like fashion, requiring a fewer number of excitations compared to conventional 2DFT imaging. This is crucial in cardiac imaging as respiratory and cardiac motion places high demands on imaging sp...
متن کاملEcho-planar imaging of intravoxel incoherent motion.
The recently established single-shot technique of echo-planar imaging of intravoxel incoherent motion (IVIM) for determining and imaging the variations of microscopic motions of water has been applied to studies of water perfusion in phantoms and to in vivo studies of diffusion and perfusion in cat and human brains. The phantom results demonstrate that perfusion levels comparable with those fou...
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ژورنال
عنوان ژورنال: RadioGraphics
سال: 1994
ISSN: 0271-5333,1527-1323
DOI: 10.1148/radiographics.14.5.7991813