Sonographic Assessment of the Optic Nerve Sheath in Giant Cell Arteritis (SONIC-GCA): protocol for a prospective, multicentre diagnostic test accuracy study

Introduction Giant cell arteritis (GCA) is a vision-threatening systemic vasculitis for which no universally accessible diagnostic tool exists. Optic nerve sheath diameter (ONSD), measurable via ultrasound, has emerged as a promising, non-invasive biomarker of cranial GCA. The Sonographic Assessment...

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Bibliographic Details

Published in:	BMJ Open
Main Authors:	Arielle Mendel, Christian Pagnoux, Lillian Barra, Jean-Paul Makhzoum, Asma Touati, Guylaine Marcotte
Format:	Article
Language:	English
Published:	BMJ Publishing Group 2025-10-01
Online Access:	https://bmjopen.bmj.com/content/15/10/e110078.full