Format

Send to

Choose Destination
See comment in PubMed Commons below
Magn Reson Med. 2014 Jun;71(6):2231-42. doi: 10.1002/mrm.24860. Epub 2013 Sep 16.

A 3 T sodium and proton composite array breast coil.

Author information

1
Department of Radiology, Utah Center for Advanced Imaging Research, University of Utah, Salt Lake City, Utah, USA; Department of Physics, University of Utah, Salt Lake City, Utah, USA.

Abstract

PURPOSE:

The objective of this study was to determine whether a sodium phased array would improve sodium breast MRI at 3 T. The secondary objective was to create acceptable proton images with the sodium phased array in place.

METHODS:

A novel composite array for combined proton/sodium 3 T breast MRI is compared with a coil with a single proton and sodium channel. The composite array consists of a 7-channel sodium receive array, a larger sodium transmit coil, and a 4-channel proton transceive array. The new composite array design utilizes smaller sodium receive loops than typically used in sodium imaging, uses novel decoupling methods between the receive loops and transmit loops, and uses a novel multichannel proton transceive coil. The proton transceive coil reduces coupling between proton and sodium elements by intersecting the constituent loops to reduce their mutual inductance. The coil used for comparison consists of a concentric sodium and proton loop with passive decoupling traps.

RESULTS:

The composite array coil demonstrates a 2-5× improvement in signal-to-noise ratio for sodium imaging and similar signal-to-noise ratio for proton imaging when compared with a simple single-loop dual resonant design.

CONCLUSION:

The improved signal-to-noise ratio of the composite array gives breast sodium images of unprecedented quality in reasonable scan times.

KEYWORDS:

RF coil; breast cancer; decoupling; metabolic imaging; phased array; sodium

PMID:
24105740
PMCID:
PMC3955748
DOI:
10.1002/mrm.24860
[Indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Wiley Icon for PubMed Central
    Loading ...
    Support Center