[Positron emission tomography-CT scan (PET-CT) in the diagnosis of large vessel vasculitis]

Area of Science:

• Rheumatology and Immunology
• Nuclear Medicine and Radiology

Background:

• Vasculitides encompass diverse inflammatory diseases affecting blood vessels, classified by vessel size (small, medium, large).
• Large vessel vasculitis, specifically Takayasu arteritis and giant cell arteritis, presents diagnostic challenges, often requiring advanced imaging.
• Radiology is crucial for determining disease distribution and extent in large vessel vasculitis.

Purpose of the Study:

• To evaluate the utility of Fluorine-FDG PET-CT in diagnosing and monitoring large vessel vasculitis.
• To assess the sensitivity and specificity of FDG PET-CT in identifying active disease and progression.

Main Methods:

• Utilized Fluorine-FDG PET-CT imaging to assess vessel wall uptake in patients with large vessel vasculitis.
• Analyzed imaging findings for disease identification, extension, and progression evaluation.

Main Results:

• FDG PET-CT demonstrated increased vessel wall uptake in patients with active large vessel vasculitis.
• The imaging modality showed high sensitivity and specificity in identifying affected anatomic structures.
• FDG PET-CT proved effective in evaluating disease progression in non-treated patients.

Conclusions:

• Fluorine-FDG PET-CT is a valuable tool for diagnosing active large vessel vasculitis.
• FDG PET-CT enables accurate assessment of disease extent and progression, aiding clinical management.
• This imaging technique offers high sensitivity and specificity for large vessel vasculitis, particularly in untreated cases.