Clinical implications of compromised ⁸²Rb PET data acquisition

Area of Science:

• Cardiology
• Nuclear Medicine
• Medical Imaging

Background:

• Coronary artery disease (CAD) diagnosis relies on accurate myocardial flow reserve (MFR) assessment.
• Rubidium-82 (⁸²Rb) Positron Emission Tomography (PET) is a common modality for MFR quantification.
• Technical issues during ⁸²Rb PET data acquisition can potentially impact MFR results.

Purpose of the Study:

• To determine the prevalence of compromised ⁸²Rb PET data acquisitions.
• To quantify the impact of technical errors on MFR measurements.
• To highlight the importance of data quality assurance in ⁸²Rb PET studies.

Main Methods:

• Retrospective analysis of 246 rest/stress ⁸²Rb PET studies from 123 patients.
• Utilized automated quality assurance algorithms to identify technical acquisition problems.
• Compared MFR values between patients with and without flagged technical issues.

Main Results:

• Technical problems were identified in 7% of patients.
• Patients with flagged technical issues had significantly lower MFR (1.5 ± 0.5) compared to those without (2.1 ± 0.7, P = 0.01).
• Other hemodynamic and perfusion measures were similar between groups, suggesting MFR-specific impact.

Conclusions:

• Compromised ⁸²Rb PET data acquisition negatively affects MFR accuracy.
• Automated quality assurance is essential for identifying technical errors.
• Ensuring data integrity is critical for reliable MFR computation in clinical practice.