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Permanent URI for this collectionhttps://hdl.handle.net/11727/10760

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Subject: search.filters.subject.Magnetic resonance imaging

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    Evaluation of cortical thickness and brain volume on 3 Tesla magnetic resonance imaging in children with frontal lobe epilepsy
    (2020) Rahatli, Feride Kural; Sezer, Taner; Has, Arzu Ceylan; Agildere, Ahmet Muhtesem; 0000-0002-2278-1827; 0000-0003-4223-7017; 0000-0002-4226-4034; 31802343; AAJ-5931-2021; AAB-5802-2020; AAL-9808-2021
    Background Frontal lobe epilepsy (FLE) is the most common epilepsy syndrome in the pediatric population; however, brain magnetic resonance imaging (MRI) of the children with FLE is frequently normal. We use both cortical thickness and brain volume measurements to report on cortical changes in children with FLE. Our aim was to determine cortical thickness and brain volume changes on 3 Tesla MRI of children with FLE and normal brain magnetic resonance imaging. Methods Twenty-seven children with FLE and 27 healthy controls received brain magnetic resonance imaging. Cortical thickness and regional brain volumes were assessed using three-dimensional volumetric T1-weighted imaging and patients were compared with controls. Results In children with FLE, statistically significant (p < 0.05) cortical thinning were found in the bilateral middle frontal gyrus, bilateral occipitotemporal and medial lingual gyrus, left subcallosal gyrus, left short insular gyrus, and right long insular gyrus. Statistically significant volume reductions in right and left hemisphere cortical white matter, total cortical white matter, bilateral thalamus, bilateral putamen, bilateral globus pallidus, right caudate nucleus, brain stem, and right cerebellar cortex were found. Conclusion Cortical thinning in frontal and extra-frontal lobes and volume loss in a variety of brain regions were found in children with FLE.
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    Significance of the Cerebellopontine Cistern Cross-Sectional Area and Trigeminal Nerve Anatomy in Trigeminal Neuralgia: An Anatomical Study Using Magnetic Resonance Imaging
    (2020) Gunesli, Aylin; Tufan, Kadir; 0000-0003-1509-4575; 32091126; AAK-1686-2021
    AIM: To evaluate the relationship between trigeminal neuralgia (TN) and potential magnetic resonance imaging (MRI)-related measurements in patients with TN. MATERIAL and METHODS: Retrospective analysis of 104 patients with TN was performed. MRI studies of 98 healthy controls were included in the study to compare the parameters with TN patients' measurements. MRI measurements of cerebellopontine cistern (CPC) cross-sectional area, trigeminal-pontine angle (TPA) width, and trigeminal nerve cisternal segment length and thickness were assessed on both symptomatic and asymptomatic sides using 1.5T MRI with constructive interference in steady-state sequences. The images were interpreted by two radiologists blinded to the affected sides of the patients. RESULTS: There were significant differences between the symptomatic and asymptomatic sides in terms of mean trigeminal nerve length (8.8 +/- 2.34 mm vs. 9.39 +/- 2.29 mm; respectively, p=0.001) and thickness (20.9 +/- 9.6 mm(2) vs. 25 +/- 9.98 mm(2), respectively; p<0.001). The median cerebellopontine cistern cross-sectional area was considerably lower on the symptomatic side compared with the asymptomatic side [201 mm(2) (interquartile range=93) vs. 224.5 mm(2) (interquartile range=77), respectively; p<0.001]. There were no significant differences between the trigeminal-pontine angle width on either side (38.32 +/- 10.38 vs. 38.78 +/- 10.9, respectively; p=0.679). There were no statistically significant differences between the right and left sides regarding these parameters in the control group. CONCLUSION: Smaller CPC cross-sectional area, trigeminal nerve length, and trigeminal nerve thickness on MRI were demonstrated to commonly exist on the symptomatic side in patients with TN. We suggest that this narrow space may increase the risk of vascular compression on the nerve.