Spatiotemporal Pattern of Gadodiamide-Related T1 Hyperintensity Increase Within the Deep Brain Nuclei.

Détails

ID Serval
serval:BIB_3B4E410FBF49
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Spatiotemporal Pattern of Gadodiamide-Related T1 Hyperintensity Increase Within the Deep Brain Nuclei.
Périodique
Investigative radiology
Auteur(s)
Marie GPO, Pozeg P., Meuli R.A., Maeder P., Forget J.
ISSN
1536-0210 (Electronic)
ISSN-L
0020-9996
Statut éditorial
Publié
Date de publication
12/2018
Peer-reviewed
Oui
Volume
53
Numéro
12
Pages
748-754
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
The purpose of the study was to systematically evaluate the precise spatial and temporal pattern of gadolinium-related changes in T1-weighted signal intensity on unenhanced magnetic resonance (MR) images, occurring in the deep brain nuclei of adult patients exposed to at least 10 consecutive doses of gadodiamide.
In this monocentric retrospective longitudinal study, we analyzed the brain MR images of 30 patients (12 women, 18 men; mean age, 43 ± 11.6 years) acquired between December 1998 and March 2008. We drew the regions of interest in the dentate nucleus, globus pallidus, putamen, pulvinar, ventral posterior nucleus of the thalamus, superior colliculus, substantia nigra, and white matter on unenhanced T1-weighted images. Each region of interest's mean signal intensity was normalized by the mean intensity of the pons. The normalized signal intensities were measured at the baseline before first gadodiamide administration and at each of 10 successive MR imaging examinations. We used linear mixed effects models to analyze the data.
We observed a significant linear increase of signal intensity ratios across 10 successive gadodiamide administrations (all basal nuclei were significant at P < 0.001, except the ventral posterior thalamus, where P < 0.05), with the fastest signal intensity increase in the dentate nucleus (B = 0.010), followed by the globus pallidus (B = 0.0068), putamen (B = 0.0063), pulvinar (B = 0.0062), superior colliculus (B = 0.0057), substantia nigra (B = 0.0034), and ventral posterior nucleus of the thalamus (B = 0.0031). No significant signal increase was observed in the white matter (P > 0.05).
Multiple consecutive administration of gadodiamide is associated with an increase in T1-weighted hypersignal on the unenhanced scans, displaying a gradual and nonuniform pattern across different deep brain nuclei, including the ventral posterior thalamus, which was used as a reference tissue in previous studies.
Mots-clé
Adult, Aged, Brain/diagnostic imaging, Brain Mapping/methods, Brain Mapping/statistics & numerical data, Contrast Media/pharmacokinetics, Female, Gadolinium DTPA/pharmacokinetics, Humans, Image Enhancement/methods, Linear Models, Longitudinal Studies, Magnetic Resonance Imaging/methods, Magnetic Resonance Imaging/statistics & numerical data, Male, Middle Aged, Retrospective Studies
Pubmed
Web of science
Création de la notice
31/07/2018 10:05
Dernière modification de la notice
20/08/2019 13:31
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