Nineteen-channel receive array and four-channel transmit array coil for cervical spinal cord imaging at 7T
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چکیده
منابع مشابه
A 7T 8 channel transmit-receive dipole array for head imaging: dipole element and coil evaluation
Target audience: Radiofrequency (RF) engineers, anyone interested in high field RF coils, parallel transmit or high field brain imaging. Introduction: Electric dipole antennas are seeing increasing use for 7T MR imaging. They differ from conventional surface coil loops in many ways. With 8 elements surrounding a body sized tissue equivalent phantom and array of dipole antennas can achieve highe...
متن کاملSodium imaging of the heart at 7T: design, evaluation and application of a four-channel transmit/receive surface coil array
Background Insight of physiological processes and cellular metabolism makes 23Na-MRI conceptually appealing as non-invasive imaging discipline. Several studies report the applicability of 23Na-MRI for the detection and assessment of acute and chronic heart disease due to increased sodium concentration after myocardial infarctions. Bi-exponential decay of the signal and a low SNR compared to 1H-...
متن کاملDesign, evaluation and application of a modular 32 channel transmit/receive surface coil array for cardiac MRI at 7T
Background Cardiac MR (CMR) at ultrahigh fields (≥7.0 T) is challenged by B1+ inhomogeneities and signal voids which bear the potential to spoil the signal-to-noise (SNR) benefits at 7.0 T. There is a trend towards an ever larger number of transmit and receive channels, to support multidimensional B1+ shimming and parallel imaging. Therefore this work proposes a modular, two dimensional 32-chan...
متن کاملA 16-Channel Receive, Forced Current Excitation Dual-Transmit Coil for Breast Imaging at 7T
PURPOSE To enable high spatial and temporal breast imaging resolution via combined use of high field MRI, array coils, and forced current excitation (FCE) multi channel transmit. MATERIALS AND METHODS A unilateral 16-channel receive array insert was designed for use in a transmit volume coil optimized for quadrature operation with dual-transmit RF shimming at 7 T. Signal-to-noise ratio (SNR) ...
متن کامل7T Human in vivo Cardiac Imaging with an 8-Channel Transmit/Receive Array
Introduction: There are numerous reasons why cardiac MRI at high field strengths is a potentially challenging endeavor: the heart is subject to cardiac and breathing motion, necessitating peripheral pulse or preferably ECG-triggered sequences with breath holds or navigator sequences to capture the beating heart. Moreover, MRI signal generation is difficult due to inhomogeneous RF signal transmi...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2014
ISSN: 0740-3194
DOI: 10.1002/mrm.25342