Weekly enhanced T1-weighted MRI with Gadobutrol injections in MS patients: Is there a signal intensity increase in the dentate nucleus and the globus pallidus?. Issue 105 (August 2018)

• Record Type: Journal Article
• Authors: Jaulent, Paul; Hannoun, Salem; Kocevar, Gabriel; Rollot, Fabien; Durand-Dubief, Francoise; Vukusic, Sandra; Brisset, Jean-Christophe; Sappey-Marinier, Dominique; Cotton, Francois
• Is Part Of: European journal of radiology. Issue 105(2018)
• Page Start: 204
• Page End: 208
• Publication Date: 2018-08
• Subjects: DMT disease modifying treatment -- DN dentate nucleus -- GBCAs gadolinium-based contrast agents -- Gd gadolinium -- GP globus pallidus -- MCP middle cerebellar peduncle -- MS multiple sclerosis -- RR relapsing remitting -- SI signal intensity -- SOWM semioval white matter; Multiple sclerosis -- Gadolinium-based contrast agents -- Deposition -- Dentate nucleus -- Globus pallidus -- Magnetic resonance imaging; Medical radiology -- Periodicals; Radiology -- Periodicals; Radiologie médicale -- Périodiques; Medical radiology; Periodicals; 616.075705
• DOI: 10.1016/j.ejrad.2018.06.011
• Languages: English
• ISSNs: 0720-048X

Abstract

Highlights: Eight weekly doses of macrocyclic GBCA do not accumulate in the brain. Gadobutrol do not accumulate in the dentate nucleus or the Globus pallidus. Macrocyclic gadolinium-based contrast agents (GBCA) use is safer than linear GBCA. Abstract: Background and Purpose: Gadolinium-based contrast agents (GBCAs) administration have drastically improved the accuracy of Multiple Sclerosis (MS) diagnosis by highlighting any damage to the brain blood barrier, thereby differentiating between active and non-active lesions. Following multiple administrations of GBCAs, several MS studies have reported a signal intensity (SI) increase on unenhanced T1-weighted images in certain brain regions such as the dentate nucleus (DN) and the globus pallidus (GP). Our aim was therefore to determine the accumulation of macrocyclic GBCAs on enhanced T1-weighted images SI in the DN and the GP of MS patients injected eight times. Materials and Methods: Five MS patients underwent eight weekly consecutive MRI scans. Enhanced 3D T1-weighted images with Gadobutrol as a macrocyclic GBCA, were acquired. A ROI-based approach was applied for the evaluation of SI in the DN to middle cerebellar peduncle (DN-MCP) and GP to semi-oval white matter (GP-SOWM) ratios. An analysis of variance on repeated measures was used for the statistical analysis of each ratio. Results: No DN-MCP and GP-SOWM SI ratio differences were observed over the eight-weeks period using the macrocyclic GBCA. Conclusion: Iterative and weekly injections of macrocyclic GBCAs are not associated with T1 signal increase in the DN and GP of MS patients. These results would suggest a no gadolinium accumulation in the brain using macrocyclic GBCA even after several close injections and promote the use of a macrocylcic GBCA rather than linear agents for MS patients.