PMID- 28952018 OWN - NLM STAT- MEDLINE DCOM- 20180213 LR - 20181113 IS - 1826-6983 (Electronic) IS - 0033-8362 (Linking) VI - 123 IP - 2 DP - 2018 Feb TI - Effects of serial macrocyclic-based contrast materials gadoterate meglumine and gadobutrol administrations on gadolinium-related dentate nuclei signal increases in unenhanced T1-weighted brain: a retrospective study in 158 multiple sclerosis (MS) patients. PG - 125-134 LID - 10.1007/s11547-017-0816-9 [doi] AB - PURPOSE: To perform T1 signal intensity (SI) measurements in the dentate nuclei of adult patients with confirmed multiple sclerosis (MS) after serial administrations of the macrocyclic gadolinium-based contrast agents (GBCAs), gadoterate meglumine and gadobutrol. MATERIALS AND METHODS: This retrospective study was approved by the institutional review board and informed consent was waived. A review of our PACS database for the period from March 1, 2007 to July 31, 2016 revealed 158 confirmed MS patients who received exclusively either gadoterate meglumine (n = 81) or gadobutrol (n = 77) for diagnosis and follow-up. SI measurements on unenhanced T1-weighted images were performed on all scans of all patients and at regions of interest (ROIs) positioned on the dentate nucleus (DN) and pons. The dentate nucleus-to-pons (DNP) T1-SI ratio was subsequently calculated. Unpaired T test and regression analysis were used to evaluate statistical differences. RESULTS: An increase in DNP was noted between the first and last MR examinations for both gadoterate meglumine (0.0032 +/- 0.0216) and gadobutrol (0.0019 +/- 0.0346). Although the differences were not statistically significant based across the entire patient population, visible T1 hyperintensity in the DN was noted in approximately one-third of all patients in each group that received at least five administrations of either GBCA. CONCLUSIONS: SI increases on unenhanced T1-weighted images possibly indicative of gadolinium retention occur after serial administrations of the macrocyclic GBCAs, gadoterate meglumine and gadobutrol. FAU - Splendiani, Alessandra AU - Splendiani A AUID- ORCID: 0000-0002-2188-3506 AD - Radiology, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, 67100, L'Aquila, Italy. alessandra.splendiani@cc.univaq.it. FAU - Perri, Marco AU - Perri M AD - Radiology, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, 67100, L'Aquila, Italy. FAU - Marsecano, Claudia AU - Marsecano C AD - Radiology, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, 67100, L'Aquila, Italy. FAU - Vellucci, Valentina AU - Vellucci V AD - Radiology, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, 67100, L'Aquila, Italy. FAU - Michelini, Giulia AU - Michelini G AD - Radiology, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, 67100, L'Aquila, Italy. FAU - Barile, Antonio AU - Barile A AD - Radiology, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, 67100, L'Aquila, Italy. FAU - Di Cesare, Ernesto AU - Di Cesare E AD - Radiology, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Via Vetoio, 67100, L'Aquila, Italy. LA - eng PT - Comparative Study PT - Journal Article DEP - 20170927 PL - Italy TA - Radiol Med JT - La Radiologia medica JID - 0177625 RN - 0 (Contrast Media) RN - 0 (Organometallic Compounds) RN - 1BJ477IO2L (gadobutrol) RN - 6HG8UB2MUY (Meglumine) RN - AU0V1LM3JT (Gadolinium) RN - L0ND3981AG (gadoterate meglumine) SB - IM CIN - Radiol Med. 2018 Jun;123(6):432-433. PMID: 29476438 MH - Adult MH - Brain/diagnostic imaging MH - Cerebellar Nuclei/*diagnostic imaging MH - Contrast Media/*pharmacology MH - Female MH - Gadolinium/pharmacology MH - Humans MH - Magnetic Resonance Imaging/*methods MH - Male MH - Meglumine/*pharmacology MH - Middle Aged MH - Multiple Sclerosis/*diagnostic imaging MH - Organometallic Compounds/*pharmacology MH - Predictive Value of Tests MH - Retrospective Studies MH - Sensitivity and Specificity OTO - NOTNLM OT - Gadolinium OT - Gadolinium-related dentate nuclei signal OT - MRI OT - Multiple sclerosis EDAT- 2017/09/28 06:00 MHDA- 2018/02/14 06:00 CRDT- 2017/09/28 06:00 PHST- 2017/01/10 00:00 [received] PHST- 2017/09/13 00:00 [accepted] PHST- 2017/09/28 06:00 [pubmed] PHST- 2018/02/14 06:00 [medline] PHST- 2017/09/28 06:00 [entrez] AID - 10.1007/s11547-017-0816-9 [pii] AID - 10.1007/s11547-017-0816-9 [doi] PST - ppublish SO - Radiol Med. 2018 Feb;123(2):125-134. doi: 10.1007/s11547-017-0816-9. Epub 2017 Sep 27.