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RF coil considerations for short- T2 MRI.

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Title: RF coil considerations for short- T2 MRI.
Authors: Horch, R. Adam1,2, Wilkens, Ken2, Gochberg, Daniel F.2,3, Does, Mark D.1,2,3,4
Source: Magnetic Resonance in Medicine. Dec2010, Vol. 64 Issue 6, p1652-1657. 6p.
Abstract: With continuing hardware and pulse sequence advancements, modern MRI is gaining sensitivity to signals from short- T2 1H species under practical experimental conditions. However, conventional MRI coils are typically not designed for this type of application, as they often contain proton-rich construction materials that may contribute confounding 1H background signal during short- T2 measurements. An example of this is shown herein. Separately, a loop-gap style coil was used to compare different coil construction materials and configurations with respect to observed 1H background signal sizes in a small animal imaging system. Background signal sources were spatially identified and quantified in a number of different coil configurations. It was found that the type and placement of structural coil materials around the loop-gap resonator, as well as the coil's shielding configuration, are critical determinants of the coil's background signal size. Although this study employed a loop-gap resonator design, these findings are directly relevant to standard volume coils commonly used for MRI. Magn Reson Med, 2010. © 2010 Wiley-Liss, Inc. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:With continuing hardware and pulse sequence advancements, modern MRI is gaining sensitivity to signals from short- T2 1H species under practical experimental conditions. However, conventional MRI coils are typically not designed for this type of application, as they often contain proton-rich construction materials that may contribute confounding 1H background signal during short- T2 measurements. An example of this is shown herein. Separately, a loop-gap style coil was used to compare different coil construction materials and configurations with respect to observed 1H background signal sizes in a small animal imaging system. Background signal sources were spatially identified and quantified in a number of different coil configurations. It was found that the type and placement of structural coil materials around the loop-gap resonator, as well as the coil's shielding configuration, are critical determinants of the coil's background signal size. Although this study employed a loop-gap resonator design, these findings are directly relevant to standard volume coils commonly used for MRI. Magn Reson Med, 2010. © 2010 Wiley-Liss, Inc. [ABSTRACT FROM AUTHOR]
ISSN:07403194
DOI:10.1002/mrm.22558