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Broadband multicoil imaging using multiple demodulation hardware: A feasibility study
Author(s) -
Lee Jin Hyung,
Scott Greig C.,
Pauly John M.,
Nishimura Dwight G.
Publication year - 2005
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.20595
Subject(s) - demodulation , computer science , electromagnetic coil , sensitivity (control systems) , broadband , signal (programming language) , noise (video) , sampling (signal processing) , spiral (railway) , signal to noise ratio (imaging) , computer hardware , optics , electronic engineering , artificial intelligence , computer vision , physics , image (mathematics) , telecommunications , mathematics , filter (signal processing) , engineering , mathematical analysis , channel (broadcasting) , quantum mechanics , programming language
Abstract Multiple receiver‐coil data collection is an effective approach to reduce scan time. There are many parallel imaging techniques that reduce scan time using multiple receiver coils. One of these methods, partially parallel imaging with localized sensitivities (PILS), utilizes the localized sensitivity of each coil. The advantages of PILS over other parallel imaging methods include the simplicity of the algorithm, good signal‐to‐noise ratio (SNR) properties, and the fact that there is no additional complexity involved in applying the algorithm to arbitrary k ‐space trajectories. This PILS method can be further improved to provide truly parallel broadband imaging with the use of multiple‐demodulation hardware. By customizing the demodulation based on each coil's location, the k ‐space sampling rate can be chosen based on each coil's localized sensitivity region along the readout direction. A simulated demodulation of data from 2D Fourier transform (FT) and spiral trajectories is shown to demonstrate the method's feasibility. Magn Reson Med, 2005. © 2005 Wiley‐Liss, Inc.