| Přispěvatelé: |
Topcuoglu, ED, Topcuoglu, OM, Oysu, AS, Bukte, Y, Yeditepe Üniversitesi |
| Popis: |
Background Accumulation of macrocyclic gadolinium agents in children's brains remain to be determined. Purpose To demonstrate whether there is an intracranial macrocyclic gadolinium deposition after multiple contrast-enhanced MRI with gadoterate meglumine in a pediatric population. Study Type Retrospective case-control. Population In all, 45 children (age range: 5-17 years; mean, 13.7 +/- 3.4 years) for the study group and 45 healthy children (age range: 5-17 years; mean, 13.7 +/- 3.4 years) for the control group. Field Strength/Sequence T-1- and T-2-weighted axial images on a 1.5T scanner. Assessment Children with at least three enhanced brain MRIs and an age- and sex-matched control group with an unenhanced brain MRIs were compared in terms of T-1 signal intensity (SI). All patients in the study group received gadoterate meglumine intravenously (0.1 mmol/kg). SI measurements were made by drawing six regions of interest (ROIs): dentate nuclei (DN), pons, globus pallidi (GP), frontal white matter (FWM), thalamus (T), clivus, and cerebrospinal fluid (CSF) for both groups on unenhanced T-1-weighted images. Statistical Tests Student's t-test was used for comparison of SI. The Pearson correlation was calculated for the correlation between the SI and the number of gadolinium administrations. Results A significant difference was detected between two groups for DN/CSF, pons/CSF, GP/CSF, thalamus/CSF, and FWM/CSF (P < 0.001, P < 0.001, P = 0.002, P = 0.002, P = 0.024, respectively). There was no significant difference between the two groups for clivus/CSF (P = 0.15). A good correlation between the number of gadoterate meglumine administrations and the SI for DN/CSF, pons/CSF, GP/CSF, and T/CSF (r = 0.80, r = 0.73, r = 0.91, and r = 0.90, respectively) was found. Data Conclusion A significant T-1 SI increase reflecting gadolinium retention in the brain was detected for children with at least three gadoterate meglumine administrations in this series. The number of administrations correlated well with the increased SI. Technical Efficacy Stage: 5 J. Magn. Reson. Imaging 2019. |
