A Frequency Translation System for Multi-Channel, Multi-Nuclear MR Spectroscopy
IEEE Transactions on Biomedical Engineering(2021)
Abstract
Objective: Most MRI scanners are equipped to receive signals from
1
H array coils but few support multi-channel reception for other nuclei. Using receive arrays can provide significant SNR benefits, usually exploited to enable accelerated imaging, but the extension of these arrays to non-
1
H nuclei has received less attention because of the relative lack of broadband array receivers. Non-
1
H nuclei often have low sensitivity and stand to benefit greatly from the increase in SNR that arrays can provide. This paper presents a cost-effective approach for adapting standard
1
H multi-channel array receivers for use with other nuclei - in this case,
13
C. Methods: A frequency translation system has been developed that uses active mixers residing at the magnet bore to convert the received signal from a non-
1
H array to the
1
H frequency for reception by the host system receiver. Results: This system has been demonstrated at 4.7T and 7T while preserving SNR and isolation.
1
H decoupling, particularly important for
13
C detection, can be straightforwardly accommodated. Conclusion: Frequency translation can convert
1
H-only multi-channel receivers for use with other nuclei while maintaining SNR and channel isolation while still enabling
1
H decoupling. Significance: This work allows existing multi-channel MRI receivers to be adapted to receive signals from nuclei other than
1
H, allowing for the use of receive arrays for in vivo multi-nuclear NMR.
MoreTranslated text
Key words
Equipment Design,Magnetic Resonance Imaging,Magnetic Resonance Spectroscopy,Phantoms, Imaging,Signal-To-Noise Ratio
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined