Abstract
Background
We wished to document the prevalence and quantitative effects of compromised 82Rb PET data acquisitions on myocardial flow reserve (MFR).
Methods and Results
Data were analyzed retrospectively for 246 rest and regadenoson-stress studies of 123 patients evaluated for known or suspected CAD. An automated injector delivered pre-determined activities of 82Rb. Automated quality assurance algorithms identified technical problems for 7% (9/123) of patients. Stress data exhibited 2 instances of scanner saturation, 1 blood peak detection, 1 blood peak width, 1 gradual patient motion, and 2 abrupt patient motion problems. Rest data showed 1 instance of blood peak width and 2 abrupt patient motion problems. MFR was lower for patients with technical problems flagged by the quality assurance algorithms than those without technical problems (1.5 ± 0.5 versus 2.1 ± 0.7, P = 0.01), even though rest and stress ejection fraction, asynchrony and relative myocardial perfusion measures were similar for these two groups (P > 0.05), suggesting that MFR accuracy was adversely affected by technical errors.
Conclusion
It is important to verify integrity of 82Rb data to ensure MFR computation quality.
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Abbreviations
- ECTb:
-
Emory Cardiac Toolbox software
- EF:
-
Ejection fraction
- LV:
-
Left ventricle
- MBF:
-
Myocardial blood flow
- MFR:
-
Myocardial flow reserve
- PET:
-
Positron emission tomography
- QA:
-
Quality assurance
- ROI:
-
Region of interest
- RV:
-
Right ventricle
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Andrew Van Tosh serves as a consultant to Astellas Pharma Global Development. Inc. John R Votaw, C David Cooke, and Kenneth Nichols participate in royalties, Syntermed, Inc.
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Van Tosh, A., Cao, J.J., Votaw, J.R. et al. Clinical implications of compromised 82Rb PET data acquisition. J. Nucl. Cardiol. 29, 2583–2594 (2022). https://doi.org/10.1007/s12350-021-02774-9
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DOI: https://doi.org/10.1007/s12350-021-02774-9