Title :

The round window sign: a sensitive sign to detect perilymphatic fistulae on delayed postcontrast 3d-flair sequence

Author(s) :

Dubrulle, Frederique [Auteur]
Centre Hospitalier Régional Universitaire [CHU Lille] [CHRU Lille]
Chaton, Victor [Auteur]
Centre Hospitalier Régional Universitaire [CHU Lille] [CHRU Lille]
Risoud, Michael [Auteur]
Médicaments et biomatériaux à libération contrôlée: mécanismes et optimisation - Advanced Drug Delivery Systems - U 1008 [MBLC - ADDS]
Farah, Hedi [Auteur]
Centre Hospitalier Régional Universitaire [CHU Lille] [CHRU Lille]
Charley, Quentin [Auteur]
Hôpital Roger Salengro [Lille]
Vincent, Christophe [Auteur]
Advanced Drug Delivery Systems (ADDS) - U1008
Médicaments et biomatériaux à libération contrôlée: mécanismes et optimisation - Advanced Drug Delivery Systems - U 1008 [MBLC - ADDS]

Journal title :

European Radiology

Abbreviated title :

Eur Radiol

Volume number :

30

Pages :

6303–6310

Publication date :

2020-05-28

ISSN :

1432-1084

English keyword(s) :

Vertigo
Diagnosis
Differential
Endolymphatic hydrops
Magnetic resonance imaging
Meniere's disease

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

OBJECTIVE: The aim of this study is to assess the diagnostic performance of a new MR sign, named the round window sign (RWS), to diagnose perilymphatic fistula (PLF) in a population of patients with chronic cochleo-vestibular ...
Show more >OBJECTIVE: The aim of this study is to assess the diagnostic performance of a new MR sign, named the round window sign (RWS), to diagnose perilymphatic fistula (PLF) in a population of patients with chronic cochleo-vestibular symptoms, classified as definite or probable Menière's disease (MD). METHODS: A total of 164 patients (mean age 52 ± 35 years) with chronic cochleo-vestibular symptoms underwent MRI, between 4 and 5 h after intravenous gadoteric acid injection (Dotarem®, 0.1 mmol/kg). MRI exploration was carried out on a 3-T Achieva® TX scanner. We analyzed the presence of the RWS, defined as a nodular FLAIR high signal in the round window (RW) and the presence of associated saccular hydrops. When this RWS was present, a temporal bone CT scan was performed and the RW was analyzed. RESULTS: Of the 164 patients with definite MD (85 patients) or probable MD (79 patients), we found the RWS in 18 (11%), and 17/18 were classified into the group of probable MD. All these 18 patients showed other MR sequences considered as normal, including heavily weighted T2 imaging. Among these 18 patients, the temporal bone CT examination presented a filling of the RW in 13 patients (72%) and no filling of the RW in 5 patients (28%). Seven patients were surgically managed confirming in vivo the PLF diagnosis. The RWS was associated with the presence of a saccular hydrops in 4 cases. CONCLUSIONS: Delayed postcontrast 3D-FLAIR may reveal perilymphatic fistulae in patients with probable Menière's disease using the round window sign. CONCLUSIONS: • MRI with delayed acquisition can detect perilymphatic fistulae with perfect sensitivity, based on the presence of the round window sign. • This visual sign is only visible on a 3D-FLAIR sequence. • 3D-FLAIR sequence with delayed acquisition is more sensitive than temporal bone CT scan examination in detecting PLF.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

CHU Lille
Inserm
Université de Lille

Collections :

• Advanced Drug Delivery Systems (ADDS) - U1008

Submission date :

2021-01-20T15:59:26Z
2024-02-20T08:54:10Z