Volume 74, Issue 4 pp. 978-989
Full Paper

Chemical shift separation with controlled aliasing for hyperpolarized 13C metabolic imaging

Peter J. Shin

Corresponding Author

Peter J. Shin

Department of Radiology and Biomedical Imaging, University of California at San Francisco, San Francisco, California, USA

The UC Berkeley - UCSF Graduate Program in Bioengineering, California, USA

Correspondence to: Peter J. Shin, M.S., Byers Hall Room 102F, 1700 4th Street, University of California at San Francisco, San Francisco, CA 94158. E-mail: [email protected]Search for more papers by this author
Peder E.Z. Larson

Peder E.Z. Larson

Department of Radiology and Biomedical Imaging, University of California at San Francisco, San Francisco, California, USA

The UC Berkeley - UCSF Graduate Program in Bioengineering, California, USA

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Martin Uecker

Martin Uecker

Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California, USA

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Galen D. Reed

Galen D. Reed

Department of Radiology and Biomedical Imaging, University of California at San Francisco, San Francisco, California, USA

The UC Berkeley - UCSF Graduate Program in Bioengineering, California, USA

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Adam B. Kerr

Adam B. Kerr

Magnetic Resonance Systems Research Laboratory, Department of Electrical Engineering, Stanford University, Stanford, California, USA

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James Tropp

James Tropp

General Electric Healthcare, Fremont, California, USA

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Michael A. Ohliger

Michael A. Ohliger

Department of Radiology and Biomedical Imaging, University of California at San Francisco, San Francisco, California, USA

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Sarah J. Nelson

Sarah J. Nelson

Department of Radiology and Biomedical Imaging, University of California at San Francisco, San Francisco, California, USA

The UC Berkeley - UCSF Graduate Program in Bioengineering, California, USA

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John M. Pauly

John M. Pauly

Magnetic Resonance Systems Research Laboratory, Department of Electrical Engineering, Stanford University, Stanford, California, USA

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Michael Lustig

Michael Lustig

The UC Berkeley - UCSF Graduate Program in Bioengineering, California, USA

Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California, USA

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Daniel B. Vigneron

Daniel B. Vigneron

Department of Radiology and Biomedical Imaging, University of California at San Francisco, San Francisco, California, USA

The UC Berkeley - UCSF Graduate Program in Bioengineering, California, USA

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First published: 08 October 2014
Citations: 9

Presented in part at the 21st Annual Meeting of ISMRM, Salt Lake City, Utah, USA, 2013.

Abstract

Purpose

A chemical shift separation technique for hyperpolarized 13C metabolic imaging with high spatial and temporal resolution was developed. Specifically, a fast three-dimensional pulse sequence and a reconstruction method were implemented to acquire signals from multiple 13C species simultaneously with subsequent separation into individual images.

Theory and Methods

A stack of flyback echo-planar imaging readouts and a set of multiband excitation radiofrequency pulses were designed to spatially modulate aliasing patterns of the acquired metabolite images, which translated the chemical shift separation problem into parallel imaging reconstruction problem. An eight-channel coil array was used for data acquisition and a parallel imaging method based on nonlinear inversion was developed to separate the aliased images.

Results

Simultaneous acquisitions of pyruvate and lactate in a phantom study and in vivo rat experiments were performed. The results demonstrated successful separation of the metabolite distributions into individual images having high spatial resolution.

Conclusion

This method demonstrated the ability to provide accelerated metabolite imaging in hyperpolarized 13C MR using multichannel coils, tailored readout, and specialized RF pulses. Magn Reson Med 74:978–989, 2015. © 2014 Wiley Periodicals, Inc.

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