Visualization of cranial giant cell arteritis with [18F]FDG PET/CT: A case report
![Quantification of Atherosclerotic Plaque Activity and Vascular Inflammation using [18-F] Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography FDG-PET/CT](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F3777.jpg&w=3840&q=50)
Muhammed Sarjoon Amjadeen1, Manoj Bhatt1, Evyn Arnfield1
1Department of Nuclear Medicine and Specialised PET Services, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.
Insights
Giant cell arteritis, a large vessel vasculitis, requires early diagnosis. [18F]FDG PET/CT effectively detects cranial and systemic vessel inflammation, aiding timely management of this serious condition.
Area of Science:
- Rheumatology
- Nuclear Medicine
- Vascular Imaging
Background:
- Giant cell arteritis (GCA) is a critical large vessel vasculitis with potentially severe outcomes if untreated.
- Nonspecific initial symptoms can delay diagnosis, underscoring the need for advanced imaging techniques.
- Early detection and management are crucial for preventing morbidity and mortality associated with GCA.
Observation:
- A case of suspected giant cell arteritis (GCA) was evaluated.
- Conventional imaging raised suspicion for GCA.
- [18F]FDG PET/CT was employed for further assessment.
Findings:
- [18F]FDG PET/CT demonstrated significant vascular inflammation in a patient with suspected GCA.
- The imaging revealed inflammation involving both cranial and other large vessels.
- This highlights the utility of newer PET scanners in visualizing cranial vessel inflammation.
Implications:
- [18F]FDG PET/CT is a valuable tool for diagnosing giant cell arteritis, particularly cranial involvement.
- The technique aids in identifying systemic large vessel inflammation beyond cranial arteries.
- Improved diagnostic accuracy with [18F]FDG PET/CT can lead to prompt and effective patient management.
Abstract:
Giant cell arteritis is a form of large vessel vasculitis which can present with nonspecific symptoms, and if left untreated can cause significant morbidity and/or death. Early diagnosis and management are therefore paramount. The use of [18F]FDG PET/CT in the evaluation of giant cell arteritis has increased in recent years, with newer generation PET scanners capturing the historically elusive cranial vessel inflammation in active vasculitis. We present a case of giant cell arteritis which was suspected on conventional imaging modalities, and subsequently evaluated with [18F]FDG PET/CT which revealed marked vascular inflammation involving both cranial and other large vessels.
