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Journal of Nuclear Cardiology

, Volume 17, Issue 3, pp 450–458 | Cite as

Interassay reproducibility of myocardial perfusion gated SPECT in patients with atrial fibrillation

  • Santiago Aguadé-BruixEmail author
  • Guillermo Romero-Farina
  • Gemma Cuberas-Borros
  • Marta Milà-Lopez
  • Virginia Pubul-Núñez
  • Rosa Siurana-Escuer
  • David García-Dorado
  • Jaume Candell-Riera
Original Article

Abstract

Aim

The aim of this study was to assess interassay reproducibility of myocardial perfusion gated-SPECT for calculation of end-diastolic volume (EDV), end-systolic volume (ESV), and left ventricular ejection fraction (LVEF) in patients with atrial fibrillation (AF).

Methods

One hundred and fifteen consecutive patients with AF from three participating hospitals (mean age 68.9 years, 39 women) were included in the study. All patients underwent two image gated acquisitions at rest with a 30 minute interval between them. Quantitative data were obtained using the QGS and ECT software algorithms.

Results

Heart rate was similar in both studies: 74.94 ± 15.2 vs 73.03 ± 15.57. QGS yielded an LVEF of 54.4%/53.8%, an EDV of 100 mL/101.5 mL, and an ESV of 51 mL/52.3 mL; and ECT showed an LVEF of 63.6%/62.9%, an EDV of 125.8 mL/127.4 mL and ESV of 54.1 mL/56.3 mL. Correlation between the two acquisitions was high (>0.948) for both methods for LVEF, EDV and ESV. Regression and Bland-Altman graphics showed a good agreement between all parameters. Interassay variation coefficients for each method (QGS/ECT) were 5.29% vs 4.83% for LVEF, 4.94% vs 5.17% for EDV, and 9.94% vs 12.78% for ESV.

Conclusions

Interassay reproducibility of LVEF and EDV with gated-SPECT in patients with AF is good, whereas for ESV it is suboptimal, particularly when ESV is small.

Keywords

Atrial fibrillation gated-SPECT interassay reproducibility myocardial perfusion imaging 

Notes

Acknowledgments

This study was supported in part by grants from the Cardiovascular Disease Research Network (RECAVA), Instituto Carlos III [(Red C03/01, RECAVA Researchers (Red Temática de Investigación Cooperativa en Enfermedades Cardiovasculares)]. We thank Joan Castell-Conesa (Department of Nuclear Medicine), Gustavo de León (Cardiology Department, Hospital Universitari Vall d’Hebron, Barcelona), Carlos Peña-Gil (Cardiology Department, Complejo Universitario Hospitalario, Santiago de Compostela) and Alfredo Bardají (Cardiology Department, Hospital Universitari Joan XXIII, Tarragona) for their invaluable assistance. The authors have declared no conflict of interest.

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Copyright information

© American Society of Nuclear Cardiology 2009

Authors and Affiliations

  • Santiago Aguadé-Bruix
    • 1
    Email author
  • Guillermo Romero-Farina
    • 2
  • Gemma Cuberas-Borros
    • 2
  • Marta Milà-Lopez
    • 1
  • Virginia Pubul-Núñez
    • 3
  • Rosa Siurana-Escuer
    • 4
  • David García-Dorado
    • 2
  • Jaume Candell-Riera
    • 2
  1. 1.Department of Nuclear MedicineHospital Universitari Vall d’Hebron, Universitat Autònoma de BarcelonaBarcelonaSpain
  2. 2.Cardiology Department, Hospital Universitari Vall d’HebronUniversitat Autònoma de BarcelonaBarcelonaSpain
  3. 3.Department of Nuclear MedicineComplejo Universitario HospitalarioSantiago de CompostelaSpain
  4. 4.Department of Nuclear MedicineHospital Universitari Joan XXIIITarragonaSpain

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