A 16-channel receive, forced current excitation dual-transmit coil for breast imaging at 7T

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. A unilateral 16-channel receive array insert was designed for use in a transmit volume coil optimized for quadrature operation wi...

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Published in:PloS one 2014-11, Vol.9 (11), p.e113969-e113969
Main Authors: By, Samantha, Rispoli, Joseph V, Cheshkov, Sergey, Dimitrov, Ivan, Cui, Jiaming, Seiler, Stephen, Goudreau, Sally, Malloy, Craig, Wright, Steven M, McDougall, Mary Preston
Format: Article
Language:English
Subjects:
Biology and Life Sciences
Biomedical engineering
Breast
Breast - anatomy & histology
Breast Neoplasms - diagnosis
Breast Neoplasms - prevention & control
Coiling
Comparative analysis
Computer engineering
Design
Diagnostic imaging
Engineering and Technology
Equipment Design
Excitation
Feasibility studies
Female
Humans
Image acquisition
Image resolution
Magnetic resonance imaging
Magnetic Resonance Imaging - instrumentation
Magnetic Resonance Imaging - methods
Mammography
Medicine and Health Sciences
NMR
Noise
Nuclear magnetic resonance
Phantoms, Imaging
Reproducibility of Results
Research and Analysis Methods
Signal-To-Noise Ratio
Spatial discrimination
Spatial resolution
Spectrum analysis
Temporal resolution
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cited_by cdi_FETCH-LOGICAL-c692t-43d8f78f3f96389f1726ff691b64312ea0cd6a5a92dcd3e84050ff51efb265f3
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container_issue 11
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creator By, Samantha
Rispoli, Joseph V
Cheshkov, Sergey
Dimitrov, Ivan
Cui, Jiaming
Seiler, Stephen
Goudreau, Sally
Malloy, Craig
Wright, Steven M
McDougall, Mary Preston
description 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. 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) maps, g-factor maps, and high spatial and temporal resolution in vivo images were acquired to demonstrate the utility of the coil architecture. The dual-transmit FCE coil provided homogeneous excitation and the array provided an increase in average SNR of 3.3 times (max 10.8, min 1.5) compared to the volume coil in transmit/receive mode. High resolution accelerated in vivo breast imaging demonstrated the ability to achieve isotropic spatial resolution of 0.5 mm within clinically relevant 90 s scan times, as well as the ability to perform 1.0 mm isotropic resolution imaging, 7 s per dynamics, with the use of bidirectional SENSE acceleration of up to R = 9. The FCE design of the transmit coil easily accommodates the addition of a sixteen channel array coil. The improved spatial and temporal resolution provided by the high-field array coil with FCE dual-channel transmit will ultimately be beneficial in lesion detection and characterization.
doi_str_mv 10.1371/journal.pone.0113969
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identifier ISSN: 1932-6203
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1932-6203
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source Publicly Available Content Database; PubMed
subjects Biology and Life Sciences
Biomedical engineering
Breast
Breast - anatomy & histology
Breast Neoplasms - diagnosis
Breast Neoplasms - prevention & control
Coiling
Comparative analysis
Computer engineering
Design
Diagnostic imaging
Engineering and Technology
Equipment Design
Excitation
Feasibility studies
Female
Humans
Image acquisition
Image resolution
Magnetic resonance imaging
Magnetic Resonance Imaging - instrumentation
Magnetic Resonance Imaging - methods
Mammography
Medicine and Health Sciences
NMR
Noise
Nuclear magnetic resonance
Phantoms, Imaging
Reproducibility of Results
Research and Analysis Methods
Signal-To-Noise Ratio
Spatial discrimination
Spatial resolution
Spectrum analysis
Temporal resolution
title A 16-channel receive, forced current excitation dual-transmit coil for breast imaging at 7T
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