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Published in: Clinical Neuroradiology 2/2021

01-06-2021 | Magnetic Resonance Imaging | Original Article

Absence of T1 Hyperintensity in the Brain of High-risk Patients After Multiple Administrations of High-dose Gadobutrol for Cardiac Magnetic Resonance

Authors: Antonella Meloni, Domenico Montanaro, Daniele De Marchi, Mariachiara Resta, Petra Keilberg, Laura Pistoia, Vincenzo Positano, Anna Spasiano, Tommaso Casini, Caterina Cinzia De Bari, Sara De Cori, Alessia Pepe

Published in: Clinical Neuroradiology | Issue 2/2021

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Abstract

Purpose

A prospective study was conducted to evaluate signal changes in the dentate nucleus, globus pallidus, pons, and thalamus (normalized to the deep cerebellum white matter) in T1-weighted magnetic resonance (MR) images after serial injections of gadobutrol in patients with thalassemia without neurological lesions.

Methods

In this study three groups were scanned at both 1.5 T and 3 T: 15 thalassemia patients transfused and chelated with ≥4 gadobutrol administrations at a high dose (0.2 mmol/kg per scan) for late gadolinium enhancement (LGE) cardiovascular MR, 8 thalassemia patients and 13 healthy subjects who had never received gadolinium-based contrast agents (GBCA).

Results

Signal intensity (SI) ratios at 1.5 T in all regions were comparable among the three groups and were not correlated with the number of gadobutrol administrations.
In healthy subjects SI ratios were significantly different among the 4 regions, being higher in the pallidus.
The SI ratios at 1.5 T were significantly higher and not correlated with SI ratios at 3 T or with iron overload in the same regions assessed by the T2* technique.

Conclusion

This article describes the lack of increased SI in T1-weighted MR images after repeated administration of gadobutrol for cardiovascular MR studies in a high-risk population (high dose per scan, iron overload that can facilitate the transmetalation of gadolinium) scanned at 3 T and 1.5 T.
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Metadata
Title
Absence of T1 Hyperintensity in the Brain of High-risk Patients After Multiple Administrations of High-dose Gadobutrol for Cardiac Magnetic Resonance
Authors
Antonella Meloni
Domenico Montanaro
Daniele De Marchi
Mariachiara Resta
Petra Keilberg
Laura Pistoia
Vincenzo Positano
Anna Spasiano
Tommaso Casini
Caterina Cinzia De Bari
Sara De Cori
Alessia Pepe
Publication date
01-06-2021
Publisher
Springer Berlin Heidelberg
Published in
Clinical Neuroradiology / Issue 2/2021
Print ISSN: 1869-1439
Electronic ISSN: 1869-1447
DOI
https://doi.org/10.1007/s00062-020-00897-z

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