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Repeatability of left ventricular dyssynchrony and function parameters in serial gated myocardial perfusion SPECT studies

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Journal of Nuclear Cardiology Aims and scope

Abstract

Background

The purpose of this study was to establish the repeatability of left-ventricular (LV) dyssynchrony and function parameters measured from serial gated myocardial perfusion SPECT (GMPS) studies.

Methods

Thirty patients, who met standard criteria for cardiac resynchronization therapy (CRT), were prospectively enrolled. One hour after resting injection, a standard GMPS was performed, and repeated 30 minutes later after repositioning the patient. The two serial studies were processed blinded from each other by an experienced operator, and processed side-by-side by another experienced operator using iterative reconstruction, Butterworth filtering, and the Emory Cardiac Toolbox with phase analysis. Phase standard deviation, phase histogram bandwidth, LV ejection fraction, end-systolic volume, and end-diastolic volume were calculated and compared.

Results

All measured parameters were highly correlated (r > .90) between the serial studies without significant difference by paired t test. The variations of the parameters measured by side-by-side processing were significantly smaller than those measured by blinded processing.

Conclusion

These results indicated high repeatability of LV dyssynchrony and function parameters when measured serially by GMPS, especially when the serial studies were processed side-by-side. The measured variations of these parameters can be used to evaluate changes in LV dyssynchrony and function measured by GMPS before and after CRT.

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Acknowledgment

This study was supported in part by an NIH-funded research project (1R01HL094438-01A1; PI: Ji Chen, PhD), and an American Society of Nuclear Cardiology Foundation grant (PI: Prem Soman, MD). Several authors (Chen, Garcia, and Folks) receive royalties from the sale of the Emory Cardiac Toolbox. The terms of this arrangement have been reviewed and approved by Emory University in accordance with its conflict-of-interest practice.

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Authors and Affiliations

  1. Department of Cardiology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China

    Xianhe Lin MD, PhD

  2. Department of Nuclear Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China

    Huiqin Xu MD & Xuefeng Zhao MD

  3. Department of Radiology, Emory University, Atlanta, GA, USA

    Russell D. Folks BS, CNMT, Ernest V. Garcia PhD & Ji Chen PhD

  4. Division of Cardiology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA

    Prem Soman MD, PhD

Authors
  1. Xianhe Lin MD, PhD
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  2. Huiqin Xu MD
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  3. Xuefeng Zhao MD
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  4. Russell D. Folks BS, CNMT
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  5. Ernest V. Garcia PhD
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  6. Prem Soman MD, PhD
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  7. Ji Chen PhD
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Corresponding author

Correspondence to Xianhe Lin MD, PhD.

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Lin, X., Xu, H., Zhao, X. et al. Repeatability of left ventricular dyssynchrony and function parameters in serial gated myocardial perfusion SPECT studies. J. Nucl. Cardiol. 17, 811–816 (2010). https://doi.org/10.1007/s12350-010-9238-y

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  • DOI: https://doi.org/10.1007/s12350-010-9238-y

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