Titre :

Altered signal intensity of active enhancing inflammatory lesions using post-contrast double inversion recovery mr sequence

Auteur(s) :

Hodel, Jerome [Auteur]
Badr, Sammy [Auteur]
Marrow Adiposity & Bone Lab [MABLab] - ULR 4490
Outteryck, Olivier [Auteur]
Lille Inflammation Research International Center (LIRIC) - U995
Lille Inflammation Research International Center - U 995 [LIRIC]
Lebert, Paul [Auteur]
Chechin, David [Auteur]
Benadjaoud, Mohamed Amine [Auteur]
Pruvo, Jean-Pierre [Auteur]
Troubles cognitifs dégénératifs et vasculaires - U1171
Troubles cognitifs dégénératifs et vasculaires - U 1171 - EA 1046 [TCDV]
Vermersch, Patrick [Auteur]
Lille Inflammation Research International Center (LIRIC) - U995
Lille Inflammation Research International Center - U 995 [LIRIC]
Leclerc, Xavier [Auteur]
Troubles cognitifs dégénératifs et vasculaires - U1171
Troubles cognitifs dégénératifs et vasculaires - U 1171 - EA 1046 [TCDV]

Titre de la revue :

European radiology

Nom court de la revue :

Eur. Radiol.

Numéro :

27

Pagination :

637-641

Date de publication :

2017-02-01

ISSN :

0938-7994

Mot(s)-clé(s) en anglais :

Multiple sclerosis
Double inversion recovery MR sequence
Active enhancing inflammatory lesions
Clinically isolated syndrome
Gadolinium-based contrast agent

Discipline(s) HAL :

Sciences du Vivant [q-bio]

Résumé en anglais : [en]

OBJECTIVE: We aimed at establishing the impact upon gadolinium administration on the conspicuity of active enhancing multiple sclerosis (MS) lesions using double inversion recovery (DIR) at 3T. METHODS: 15 consecutive ...
Lire la suite >OBJECTIVE: We aimed at establishing the impact upon gadolinium administration on the conspicuity of active enhancing multiple sclerosis (MS) lesions using double inversion recovery (DIR) at 3T. METHODS: 15 consecutive patients with MS (n=8) or a clinically isolated syndrome (n=7) underwent pre and post-contrast DIR in addition to T2-weighted, FLAIR, pre and post-contrast T1-weighted sequences. First, two neuroradiologists located and marked all the enhancing MS lesions visible in consensus. Second, two other neuroradiologists, blinded to other sequences than DIR, independently assessed the SI changes from pre to post-contrast DIR images for each enhancing lesion, according to a 4-point-scale: increased SI (grade 1), absence of change (grade 2), lesion being partially (grade 3) or completely masked on post-contrast DIR images (grade 4). RESULTS: 246 MS lesions were detected including 26 enhancing on post-contrast T1-weighted images in 9 patients. The two blinded readers concluded to a decreased signal-intensity on post-contrast DIR images for all the 26 enhancing MS lesions (14 of grade 3 and 12 of grade 4). Inter-observer agreement was excellent, Kappa=0.85 (0.75 - 0.94). Using DIR post-contrast leads to altered signal-intensity of enhancing active MS lesions, ranging from partial to complete signal-loss. CONCLUSIONS: Our study strongly suggests the use of DIR before gadolinium administration. CONCLUSIONS: • DIR has gained widespread use in MS. • MRI protocols for MS patients usually contain several post-contrast sequences. • Signal-intensity of enhancing MS lesions is altered using DIR post-contrast. • Our study strongly suggests the use of DIR before gadolinium administration.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

CHU Lille
CNRS
Inserm
Université de Lille

Collections :

• Institut de Recherche Translationnelle sur l'Inflammation (INFINITE) - U1286

Date de dépôt :

2019-11-27T13:34:54Z