Status: Recruiting
Optic Nerve Sheath Ultrasound in Giant Cell Arteritis
The Sonographic Assessment of the Optic Nerve Sheath in Giant Cell Arteritis (SONIC-GCA) study will evaluate the performance of the optic nerve sheath diameter (ONSD), measured via ultrasound, to diagnose and monitor GCA. SONIC-GCA builds upon our previous pilot studies and will answer the following questions: 1. What is the performance of ONSD to identify patients with new-onset, active GCA? 2. Is ONSD useful for monitoring GCA relapses during follow-up? 3. What is the intra- and interobserver reliability of ONSD measurements? 4. Does ONSD differ between patients with and without GCA-related retinal findings?
Participants needed: 285
Trial details
Age: 50-99Biological sex: AllType: ObservationalSponsor: Centre Integre Universitaire de Sante et Services Sociaux du Nord de l'ile de MontrealUpdated: Aug 7, 2025Locations: 6
Eligibility criteria
Age > 50 years. [+3]
Referral for a suspected GCA relapse. [+4]