Researcher:
Şentürk, Yunus Emre

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Doctor

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Yunus Emre

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Şentürk

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Şentürk, Yunus Emre

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2023 - 20244

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    Occipital emissary vein existence and its impact on the diagnosis of idiopathic intracranial hypertension in pediatric patients
    (Springer, 2024)  ; Özmen, Evrim; Şentürk, Yunus Emre; Peker, Ahmet; Öner, Ali Yusuf;  ; School of Medicine; Koç University Hospital
    Purpose This study aimed to investigate the efficacy of occipital emissary vein (OEV) detection in the diagnosis of idiopathic intracranial hypertension (IHH) in the pediatric age group, and to compare the prevalence and luminal diameter of OEV in patients with IHH and in healthy control subjects. Methods Conventional magnetic resonance imaging findings were assessed in the patients with IHH and in healthy control subjects who were under the age of 18, by two observers. The presence and luminal dimension of OEV and transverse sinus stenosis were also evaluated and compared between these two groups with magnetic resonance venography techniques. Results The rate of OEV existence was 7 times higher in the IIH group compared to the control group based on the second observer outcome (p = 0.010, OR = 7.0), with a very good interobserver agreement (kappa = 0.85). The dimension of OEV ranged between 0.6 and 2.5 mm. There was no correlation found between the opening pressure and the dimension of OEV (p = 0.834). Conclusion In conclusion, OEV existence could be an additional radiological finding for diagnosing IHH among pediatric patients, alongside other conventional findings.
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    Differentiation of post-polio syndrome from prior poliomyelitis sequela by assessing paraspinal muscle involvement in magnetic resonance imaging
    (MDPI, 2024) Terlemez, Rana; Cetin, Burak Ugur; Topaloğlu, Mahir; Sarıkaya, Deniz; Peker, Ahmet; Şentürk, Yunus Emre; Öğe, Ali Emre; Ketenci, Ayşegül; School of Medicine; Koç University Hospital
    Background/Objectives: Post-polio syndrome (PPS) affects former polio patients, manifesting decades after initial infection with progressive symptoms like pain, fatigue, and muscle weakness. Diagnosis relies on the clinical criteria and exclusion of other probable causes. The purpose of this study is to determine the scope and new diagnostic value of magnetic resonance imaging (MRI) in identifying muscle involvement in PPS and distinguishing it from prior poliomyelitis (PPM). Methods: This study was approved by the Koç University Ethics Committee with Approval No. 2023.409.IRB2.090. Electronic medical archives from two academic institutions were searched for records tagged with ICD code B-91 for poliomyelitis sequalae. The resulting search query of 291 records was manually sorted for PPS and PPM, medical history, clinical examination findings, and lumbar MR images down to 32 patients. Two independent radiologists evaluated the paraspinal musculature in the MRIs using the Mercuri scale. Inter-rater agreement, comparison of the paraspinal musculatures between groups, and their relationship to leg involvement were assessed with the resulting data. Results: Inter-rater agreement was found to be almost perfect across all muscles, except for the multifidus muscle. When clinical examination findings were included for these muscles, quadratus lumborum (QL) degradation was found in both right-side (p = 0.017) and left-side (p = 0.002) leg involvement. Conclusions: QL muscle deterioration may serve as a diagnostic marker for PPS, potentially guiding lumbar pain treatment through rehabilitation. © 2024 by the authors.
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    Tortuous occipital emissary vein combined with dural venous sinus stenosis in contrast-enhanced MRV for evaluation of idiopathic intracranial hypertension
    (Springer, 2024) Şentürk, Yunus Emre; Peker, Ahmet; Aydın, Kubilay; Özmen, Evrim; Aygün, Murat Serhat; Atalay, Hande Özen; Öner, Ali Yusuf; School of Medicine; Koç University Hospital
    Purpose Venous outflow impediment is increasingly recognized in idiopathic intracranial hypertension (IIH). We aim to search for the value of tortuous occipital emissary vein (OEV) in IIH by integrating measurable transverse sinus (TS) stenosis in contrast-enhanced MR venography (CE-MRV). Methods Twenty-one IIH patients were evaluated with CE-MRV. Each patient had high LP opening pressure (> 25 cm.H2O), and presented papilledema. Age- and sex-matched 21 control subjects who underwent cranial CE-MRV were selected. The OEV and the following features: intraosseous diameter of more than 3 mm, twisted course, and continuous with prominent sub-occipital extracranial veins were named tortuous OEV. TS stenosis was measured by utilizing the coronal T1-VIBE series to calculate quantitative metrics such as TS (max./min.). The tortuous OEV and TS (max./min.) were registered to create a bivariate logistic regression model to assess the performance of tortuous OEV for IIH when accompanied by TS stenosis. Results Six (29%) tortuous OEVs were observed in the IIH group, while no tortuous OEV was identified in the control group (p = 0.021). The mean TSmax./min. was 2.48 +/- 1.19 in patients with IIH and 1.23 +/- 0.33 in the control group (p < 0.001). According to regression analysis, tortuous OEV is not predictive of IIH (p = 0.999), while the higher TSmax./min. (> 1.69) is predictive of IIH (p = 0.022, OR: 8.9; %95 CI; 1.4-59.0) when accompanied together. Conclusion Tortuous occipital emissary vein is more frequently seen in patients with IIH. However, the tortuous appearance alone does not predict idiopathic intracranial hypertension unless associated with measurable transverse sinus narrowing in CE-MRV.
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    The angiographic and clinical follow-up outcomes of the wide-necked and complex intracranial aneurysms treated with LVIS EVO-assisted coiling
    (NLM (Medline), 2023) Puthuran, Mani; Onal, Yilmaz; Barburoglu, Mehmet; Chandran, Arun; Berdikhojayev, Mynzhylky; Gravino, Gilbert; Velioglu, Murat; Sencer, Serra; Aygün, Murat Serhat; Aydın, Kubilay; Şentürk, Yunus Emre; Teaching Faculty; Doctor; Doctor; School of Medicine; N/A; N/A; Koç University Hospital; 291692; N/A; N/A
    Background: The Low Profile Visible Intraluminal Support EVO (LVIS EVO) is a self-expandable braided stent, which was recently introduced for the treatment of intracranial aneurysms. Full visibility of the stent and a relatively high metal coverage ratio are the unique features of the LVIS EVO. Objective: To assess the safety, efficacy, and midterm durability of LVIS EVO stent-assisted coiling for the treatment of wide-necked intracranial aneurysms. Methods: The endovascular databases were reviewed to identify patients treated with LVIS EVO-assisted coiling. The technical success and immediate clinical/angiographic outcomes were assessed. Periprocedural and delayed complications were evaluated. The follow-up angiographic/clinical outcomes were investigated. The preprocedural/follow-up neurological statuses were assessed with the modified Rankin Scale. Results: One hundred three aneurysms in 103 patients (63 females) with a mean age of 54.9 ± 11.3 years were included. The mean maximum sac diameter was 6.2 ± 2.9 mm. The procedural technical success rate was 100%. Immediate postprocedural angiography showed complete occlusion in 77.7%. The mean duration of the angiographic follow-up was 8.8 ± 3.6 months. Follow-up angiography showed complete aneurysm occlusion in 89% of the 82 patients with angiographic follow-up. Recanalization was observed in 7.3% of 82 patients. Two patients (2.4%) required retreatment. In addition, 8.7% of the patients had at least 1 complication, and 2.9% of the patients developed a permanent morbidity. All patients had mRS scores ≤2. Conclusion: The results of this study demonstrate that SAC with LVIS EVO is a relatively safe, efficient, and durable treatment for wide-necked and complex intracranial aneurysms. Copyright © Congress of Neurological Surgeons 2022. All rights reserved.