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Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
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Focal FDG Activity in the Region of Right Atrium: Coregistered CT Identifies Three Benign Etiologies

Murali Meka, E Gordon Depuey, Peeyush Bhargava

    Radiology Case Reports
    |June 16, 2016
    PubMed

    Insights

    Recognizing benign causes of focal FDG uptake in the right atrium is crucial. Co-registered CT imaging aids in accurately identifying these findings on whole-body FDG PET-CT scans.

    Area of Science:

    • Nuclear Medicine
    • Radiology
    • Cardiovascular Imaging

    Background:

    • Focal fluorodeoxyglucose (FDG) uptake in the right atrium on positron emission tomography (PET) scans can mimic malignancy.
    • Accurate differentiation between benign and malignant causes is essential for appropriate patient management.

    Observation:

    • This study presents whole-body FDG PET-CT imaging findings in three patients with benign focal activity in the right atrial region.
    • Co-registered computed tomography (CT) was utilized to identify the specific causes of FDG uptake.

    Findings:

    • The co-registered CT correctly identified the benign causes as: right atrial appendage, lipomatous hypertrophy of the interatrial septum, and catheter-related activity.
    • These benign entities, while reported individually, are presented collectively to highlight their significance.

    Implications:

    • Emphasizes the importance of recognizing benign causes of FDG uptake in the right atrium.
    • Demonstrates the critical role of co-registered CT in enhancing the accuracy and specificity of FDG PET imaging for cardiac findings.

    Keywords:
    CT, computed tomographyFDG, fluorodeoxyglucosePET, positron emission tomographySUV, standardized uptake value

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