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Whole-heart coronary MRA with 100% respiratory gating efficiency: Self-navigated three-dimensional retrospective image-based motion correction (TRIM)

Authors

  • Jianing Pang,

    1. Department of Radiology and Biomedical Engineering, Northwestern University, Chicago, Illinois, USA
    2. Biomedical Imaging Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
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  • Himanshu Bhat,

    1. Siemens Medical Solutions USA Inc, Charlestown, Massachusetts, USA
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  • Behzad Sharif,

    1. Biomedical Imaging Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
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  • Zhaoyang Fan,

    1. Biomedical Imaging Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
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  • Louise E. J. Thomson,

    1. Biomedical Imaging Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
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  • Troy LaBounty,

    1. Biomedical Imaging Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
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  • John D. Friedman,

    1. Biomedical Imaging Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
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  • James Min,

    1. Biomedical Imaging Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
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  • Daniel S. Berman,

    1. Biomedical Imaging Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
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  • Debiao Li

    Corresponding author
    1. Biomedical Imaging Research Institute, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, California, USA
    2. Department of Bioengineering, University of California, Los Angeles, California, USA
    • Correspondence to: Debiao Li, Ph.D., Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, 8700 Beverly Blvd, PACT Suite 800, Los Angeles, CA 90048. E-mail: debiao.li@cshs.org

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  • This article was corrected following online publication to resolve errors in the authorship byline. The correct version was reposted on February 19, 2013.

Abstract

Purpose

To develop a three-dimensional retrospective image-based motion correction technique for whole-heart coronary MRA with self-navigation that eliminates both the need to setup a diaphragm navigator and gate the acquisition.

Methods

The proposed technique uses one-dimensional self-navigation to track the superior–inferior translation of the heart, with which the acquired three-dimensional radial k-space data is segmented into different respiratory bins. Respiratory motion is then estimated in image space using an affine transform model and subsequently this information is used to perform efficient motion correction in k-space. The performance of the proposed technique on healthy volunteers is compared with the conventional navigator gating approach as well as data binning using diaphragm navigator.

Results

The proposed method is able to reduce the imaging time to 7.1±0.5 min from 13.9±2.6 min with conventional navigator gating. The scan setup time is reduced as well due to the elimination of the navigator. The proposed method yields excellent image quality comparable with either conventional navigator gating or the navigator binning approach.

Conclusion

We have developed a new respiratory motion correction technique for coronary MRA that enables 1 mm3 isotropic resolution and whole-heart coverage with 7 min of scan time. Further tests on patient population are needed to determine its clinical usage. Magn Reson Med 71:67–74, 2014. © 2013 Wiley Periodicals, Inc.

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