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• W1579510014 abstract "Magnetic resonance imaging (MRI) is generally performed using a slice-selective excitation followed by 2D Fourier transform gradient encoding. This limits the minimum echo times to a few milliseconds, making signal components with short T 2 relaxation times invisible. This article describes an alternative method for selective excitation that allows echo times of the order of tens of microseconds on current whole-body clinical scanners. The technique is based on dividing a conventional excitation pulse into two half pulses, each of which is applied with an opposite gradient polarity. When the signals from these two are combined, the result is the same as a single, full excitation pulse, but with a much shorter echo time. Extensions of this technique are presented, including pulse designs for small and large flip angle pulses, several different approaches to volumetric acquisitions, as well as an examination of some of the practical issues associated these techniques." @default.
• W1579510014 created "2016-06-24" @default.
• W1579510014 creator A5008348052 @default.
• W1579510014 date "2012-06-15" @default.
• W1579510014 modified "2023-10-17" @default.
• W1579510014 title "Selective Excitation for Ultrashort Echo Time Imaging" @default.
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• W1579510014 doi "https://doi.org/10.1002/9780470034590.emrstm1271" @default.
• W1579510014 hasPublicationYear "2012" @default.
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