Pediatric brain: no increased signal intensity in the dentate nucleus on unenhanced T1-weighted MR images after consecutive exposure to a macrocyclic gadolinium-based contrast agent
PurposeTo determine the effect of at least five serial injections of the macrocyclic gadolinium-based contrast agent (GBCA) gadoterate meglumine on the signal intensity (SI) of the dentate nucleus (DN) of the pediatric brain on nonenhanced T1-weighted magnetic resonance (MR) images.Materials and Met...
Gespeichert in:
| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
Mar 8 2017
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| In: |
Radiology
Year: 2017, Jahrgang: 283, Heft: 3, Pages: 828-836 |
| ISSN: | 1527-1315 |
| DOI: | 10.1148/radiol.2017162980 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1148/radiol.2017162980 Verlag, Volltext: https://pubs.rsna.org/doi/10.1148/radiol.2017162980 
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| Verfasserangaben: | Alexander Radbruch, Robert Haase, Philipp Kickingereder, Philipp Bäumer, Sebastian Bickelhaupt, Daniel Paech, Wolfgang Wick, Heinz-Peter Schlemmer, Angelika Seitz, Martin Bendszus |
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| 245 | 1 | 0 | |a Pediatric brain |b no increased signal intensity in the dentate nucleus on unenhanced T1-weighted MR images after consecutive exposure to a macrocyclic gadolinium-based contrast agent |c Alexander Radbruch, Robert Haase, Philipp Kickingereder, Philipp Bäumer, Sebastian Bickelhaupt, Daniel Paech, Wolfgang Wick, Heinz-Peter Schlemmer, Angelika Seitz, Martin Bendszus |
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| 520 | |a PurposeTo determine the effect of at least five serial injections of the macrocyclic gadolinium-based contrast agent (GBCA) gadoterate meglumine on the signal intensity (SI) of the dentate nucleus (DN) of the pediatric brain on nonenhanced T1-weighted magnetic resonance (MR) images.Materials and MethodsIn this retrospective, institutional review board-approved study, 41 pediatric patients (age range, 3-17 years) who were imaged in at least five consecutive 1.5-T MR examinations with the exclusive use of gadoterate meglumine (plus a final additional nonenhanced MR imaging examination) were evaluated. SI ratio differences between the first and last MR examination were calculated for DN-to-pons and DN-to-middle cerebellar peduncle (MCP) ratios in a region-of-interest-based analysis, and one-sample t tests were used to examine if the SI ratio differences differed from 0. Bayes factors were calculated to quantify the strength of evidence for each test.ResultsPatients underwent a mean of 8.6 ± 3.9 GBCA administrations (mean accumulated dose, 32.07 mmol ± 17.62, with an average of 16.7 weeks ± 7.9 between every administration). Both ratio differences did not differ significantly from 0 (DN-to-pons ratio: −0.0012 ± 0.0101, P = .436; DN-to-MCP ratio: 0.0007 ± 0.0088, P = .604), and one-sided Bayes factors provided substantial evidence against an SI ratio increase (0.10 for DN-to-pons ratio; 0.27 for DN-to-MCP ratio).ConclusionNo increase of the SI in the DN was found after a mean of 8.6 serial injections of the macrocyclic GBCA gadoterate meglumine in pediatric patients, confirming previous studies that did not find this effect after serial injections of macrocyclic GBCAs in adults.© RSNA, 2017 | ||
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