Auxiliary probe design adaptable to existing probes for remote detection NMR, MRI, and time-of-flight tracing

TitleAuxiliary probe design adaptable to existing probes for remote detection NMR, MRI, and time-of-flight tracing
Publication TypeJournal Article
Year of Publication2006
AuthorsHan S.I, Granwehr J., Garcia S., McDonnell E.E, Pines A
JournalJournal of Magnetic Resonance
Volume182
Issue2
Pagination260-272
Date PublishedOct
ISBN Number1090-7807
Accession NumberWOS:000241203900010
Keywordsflow
Abstract

A versatile, detection-only probe design is presented that can be adapted to any existing NMR or MRI probe with the purpose of making the remote detection concept generally applicable. Remote detection suggests freeing the NMR experiment from the confinement of using the same radio frequency (RF) coil and magnetic field for both information encoding and signal detection. Information is stored during the encoding step onto a fluid sensor medium whose magnetization is later measured in a different location. The choice of an RF probe and magnetic field for encoding can be made based solely on the size and characteristics of the sample and the desired information quality without considering detection sensitivity, as this aspect is dealt with by a separate detector. While early experiments required building probes that included two resonant circuits, one for encoding and one for detection, a modular approach with a detection-only probe as presented here can be used along with any existing NMR probe of choice for encoding. The design of two different detection-only probes is presented, one with a saddle coil for milliliter-sized detection volumes, and the other one with a microsolenoid coil for sub-microliter fluid quantities. As example applications, we present time-of-flight (TOF) tracing of hyperpolarized Xe-129 spins in a gas mixture through coiled tubing using the microsolenoid coil detector and TOF flow imaging through a nested glass container where the gas flow changes its direction twice between inlet and outlet using the saddle coil detector. (c) 2006 Elsevier Inc. All rights reserved.

URL<Go to ISI>://WOS:000241203900010
DOI10.1016/J.Jmr.2006.06.024
Short TitleAuxiliary probe design adaptable to existing probes for remote detection NMR, MRI, and time-of-flight tracing
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