Neuroradiology最新文献

{"title":"Visualization of cortical neoangiogenesis after combined revascularization surgery in moyamoya disease using silent MRA.","authors":"Tomoaki Suzuki, Hitoshi Hasegawa, Hidemoto Fujiwara, Kohei Shibuya, Kouichirou Okamoto, Makoto Oishi","doi":"10.1007/s00234-024-03486-w","DOIUrl":"10.1007/s00234-024-03486-w","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate postsurgical indirect cortical neoangiogenesis in patients with moyamoya disease (MMD) using silent magnetic resonance angiography (MRA).</p><p><strong>Methods: </strong>We studied 44 patients with MMD (63 hemispheres) who were previously revascularized with combined bypass surgery (23 and 40 hemispheres in pediatric and adult patients, respectively). They underwent follow-up for postoperative bypass patency using time-of-flight (TOF)-MRA and silent MRA between January 2022 and December 2023. The mean duration from surgery to MRA was 8.5 years (range, 1.2-22.3 years). Two observers independently rated the revascularization as follows: 0 (near-complete signal loss or no signal); 1, poor (slightly visible donor arteries); 2, good (acceptable revascularization around the brain surface); and 3, excellent (good quality of revascularization with perfusion from the cortical surface into the middle cerebral artery).</p><p><strong>Results: </strong>Silent MRA visualized indirect bypass significantly better than TOF-MRA (2.6 ± 0.7 and 1.4 ± 0.8) (P < 0.01). In silent MRA, the mean score of indirect bypass was significantly higher than that of direct bypass (2.6 ± 0.7 and 1.7 ± 1.0; P < 0.01) and indicated good indirect bypass development in both children and adults (91.3% and 85.0%; score ≥ 2). Children exhibited a higher rate of excellent indirect bypass patency than adults (73.9% and 55.0%; score 3). Poor bypass development in indirect bypass (8 hemispheres, mean age: 35.5 ± 17.5 years, mean follow-up period: 11.3 years) was significantly observed in male patients (P < 0.01).</p><p><strong>Conclusion: </strong>Silent MRA enables better precision in postsurgical visualization of indirect cortical neoangiogenesis during long-term follow-up and reveals indirect bypass development even in adult patients.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"321-329"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11893653/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142505050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reorganization of central auditory pathways in vestibular schwannoma: a diffusion tensor imaging study.","authors":"Kautilya R Patel, Indira Devi Bhagavatula, Subhas K Konar, Shubham Kaushal, Aravinda Hr","doi":"10.1007/s00234-024-03534-5","DOIUrl":"10.1007/s00234-024-03534-5","url":null,"abstract":"<p><strong>Purpose: </strong>Objective information about the central auditory pathways in vestibular schwannoma can guide strategies for hearing rehabilitation and prognostication. This study aims to generate this information using diffusion tensor imaging (DTI).</p><p><strong>Methods: </strong>This is a prospective observational single center study including 35 patients with vestibular schwannoma and 40 controls. Subjects underwent 64 direction multi-shell DTI which was processed to yield scalar parameters [Fractional Anisotropy (FA) and Apparent Diffusion Coefficient (ADC)] and probabilistic fiber tracking parameters.</p><p><strong>Results: </strong>FA values were found to be significantly reduced at bilateral medial geniculate bodies and contralateral inferior colliculus (P < 0.001). In contrast, FA values were significantly increased at bilateral Heschl's gyrus (P < 0.001). This was further validated by a progressive increase in FA values at bilateral Heschl's gyri with increasing tumor size. Contralateral inferior colliculus showed a marginal increase in FA value (P = 0.006) and a marginal decrease in ADC value (P = 0.045) in patients with nonfunctional hearing as compared to patients with functional hearing. Rest of the DTI parameters were comparable across patient groups based on duration of hearing loss, hearing function, tumor location and tumor size. FA values along the tracts and the tract volumes were reduced significantly on both the sides (P < 0.001).</p><p><strong>Conclusion: </strong>Vestibular schwannoma induces degenerative changes in subcortical auditory pathways bilaterally; bilateral medial geniculate bodies and contralateral inferior colliculi being the epicenters of these changes. Primary auditory cortex attempts to reorganize and adjust to the loss of these subcortical inputs.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"383-392"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142909943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The cortical high-flow sign in oligodendroglioma, IDH-mutant and 1p/19q-codeleted is correlated with histological cortical vascular density.","authors":"Koji Yamashita, Ryo Murayama, Masahiro Itoyama, Kazufumi Kikuchi, Masaoki Kusunoki, Daisuke Kuga, Ryusuke Hatae, Yutaka Fujioka, Ryosuke Otsuji, Nobuhiro Fujita, Koji Yoshimoto, Kousei Ishigami, Osamu Togao","doi":"10.1007/s00234-024-03538-1","DOIUrl":"10.1007/s00234-024-03538-1","url":null,"abstract":"<p><strong>Background and purpose: </strong>The cortical high-flow sign has been more commonly reported in oligodendroglioma, IDH-mutant and 1p/19q-codeleted (ODG IDHm-codel) compared to diffuse glioma with IDH-wildtype or astrocytoma, IDH-mutant. Besides tumor types, higher grades of glioma might also contribute to the cortical high flow. Therefore, we investigated whether the histological cortical vascular density or CNS WHO grade was associated with the cortical high-flow sign in patients with ODG IDHm-codel.</p><p><strong>Materials and methods: </strong>This retrospective study consisted of pathologically confirmed 25 adult patients with ODG IDHm-codel. We implemented pseudo-continuous arterial spin labeling technique with background suppression. Subtraction images were generated from paired control and label images. Tumor-affecting cortices without intense contrast enhancement on conventional MR imaging were targeted for the determination of the cortical high-flow sign. Immunohistochemical staining of CD31 antibody was performed for the identification of vascular endothelial cells. A microscopic field of the most intense vascularization was captured in each specimen. The vessel number and the relative vascular density (%Vessel) were compared between the positive cortical high-flow sign (CHFS⁺) and the negative cortical high-flow sign (CHFS^-) groups using the Mann-Whitney U test. Second, Fisher's exact test was used to compare the difference between the presence or absence of cortical high-flow sign and CNS WHO grades. Finally, the vessel number and %Vessel were compared between the CNS WHO grade 2 and grade 3 using the Mann-Whitney U test.</p><p><strong>Results: </strong>The vessel number and %Vessel were higher in patients with the CHFS⁺ group than in patients with CHFS^- group (p = 0.016 and p = 0.005, respectively). We observed no significant differences (p = 1.00) in the frequency of cortical high-flow sign between the CNS WHO grade 2 and grade 3. In addition, no significant differences are found in the vessel number and %Vessel between the CNS WHO grade 2 and grade 3 (p = 0.121 and p = 0.475, respectively).</p><p><strong>Conclusion: </strong>The cortical high-flow sign on ASL, which is more commonly found in ODG IDHm-codel than in diffuse glioma with IDH-wildtype or astrocytoma, is associated with the histological cortical vascular density in patients with ODG IDHm-codel.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"291-298"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143009014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep orbital puncture of the superior ophthalmic vein for embolization of indirect carotid-cavernous fistula: a case report, technical note and review of the current literature.","authors":"Luís Gustavo Biondi Soares, Filipi Fim Andreão, Felipe Salvagni Pereira, Dmitriy Sergeyevich Korotkov, Luis F Fabrini Paleare, Leonardo Rocha-Carneiro García-Zapata, Leandro Assis Barbosa","doi":"10.1007/s00234-025-03545-w","DOIUrl":"10.1007/s00234-025-03545-w","url":null,"abstract":"<p><strong>Purpose: </strong>Carotid-cavernous fistulas (CCFs) are abnormal connections between the carotid artery and cavernous sinus, often causing ocular symptoms like chemosis, proptosis, and diplopia. Endovascular embolization is the preferred treatment, typically performed via the transfemoral transvenous route through the inferior petrosal sinus (IPS). However, we present a case and a systematic review of indirect CCF treated through deep orbital puncture of the superior ophthalmic vein (SOV) for embolization.</p><p><strong>Methods: </strong>We systematically revised the current literature on PubMed, Web of Science, and Embase, based on PRISMA guideline, concerning the deep orbital puncture of the SOV for embolization of indirect CCFs.</p><p><strong>Results: </strong>Our systematic review identified only eight eligible studies encompassing 17 patients, ranging in age from 34 to 82 years, underscoring the rarity of this specific approach. The most frequently used trajectory directed the needle along the floor of the orbit towards the superior orbital fissure or orbital apex, and a variety of embolization materials were used in the studies. While the technique has been mentioned in the literature, our analysis indicates that it remains infrequently reported, with many cases lacking consistent procedural details. Furthermore, we present a case of a 63-year-old woman with imaging suggesting a CCF and compatible symptoms. A transorbital puncture of the SOV was performed. Embolization was successfully achieved with ethylene vinyl alcohol copolymer. The follow-up confirmed the resolution of the CCF without new neurological deficits and no new symptoms.</p><p><strong>Conclusion: </strong>This case highlights transorbital SOV puncture as a feasible and minimally invasive alternative for treating CCFs when conventional access is unsuccessful.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"423-435"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143040079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Alteration of dynamical degree centrality in brain functional network and its association with metabolic disorder in minimal hepatic encephalopathy.","authors":"Hui-Wei Huang, Rong-Hua Liu, Jing-Yi Zeng, Dan Li, Jian-Qi Li, Hua-Jun Chen","doi":"10.1007/s00234-024-03470-4","DOIUrl":"10.1007/s00234-024-03470-4","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate dynamical degree centrality (dDC) alteration and its association with metabolic disturbance and cognitive impairment in minimal hepatic encephalopathy (MHE).</p><p><strong>Methods: </strong>Fifty-eight cirrhotic patients (22 with MHE, 36 without MHE [NHE]) and 25 healthy controls underwent resting-state functional magnetic resonance imaging, ¹H-magnetic resonance spectroscopy, and neurocognitive examination based on the Psychometric Hepatic Encephalopathy Score (PHES). We obtained metabolite ratios in the bilateral posterior cingulate cortex and precuneus, including glutamate and glutamine (Glx)/total creatine (tCr), myo-inositol (mI)/tCr, total choline/tCr, and N-acetyl aspartate/tCr. For each voxel, degree centrality was calculated as the sum of its functional connectivity with other voxels in the brain; and sliding-window correlation was used to calculate dDC per voxel.</p><p><strong>Results: </strong>We observed a stepwise increase in Glx/tCr and a decrease in mI/tCr from NHE to MHE. The intergroup dDC differences were observed in the bilateral posterior cingulate cortex and precuneus (region of interest [ROI1]), bilateral superior-medial frontal gyrus and anterior cingulate cortex (ROI2), and left caudate head. The dDC in ROI2 (r = 0.450, P < 0.001) and mI/tCr (r = 0.297, P = 0.024) was correlated with PHES. Significant correlations were found between dDC in ROI1 and Glx/tCr (r = - 0.413, P = 0.001) and mI/tCr (r = 0.554, P < 0.001). The dDC in ROI2, Glx/tCr, and mI/tCr showed potential for distinguishing NHE from MHE (areas under the curve = 0.859, 0.655, and 0.672, respectively).</p><p><strong>Conclusion: </strong>Our findings suggested dynamic brain network disorganization in MHE, which was associated with metabolic derangement and neurocognitive impairment.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"371-381"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142351049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic accuracy of radiomics and artificial intelligence models in diagnosing lymph node metastasis in head and neck cancers: a systematic review and meta-analysis.","authors":"Parya Valizadeh, Payam Jannatdoust, Mohammad-Taha Pahlevan-Fallahy, Amir Hassankhani, Melika Amoukhteh, Sara Bagherieh, Delaram J Ghadimi, Ali Gholamrezanezhad","doi":"10.1007/s00234-024-03485-x","DOIUrl":"10.1007/s00234-024-03485-x","url":null,"abstract":"<p><strong>Introduction: </strong>Head and neck cancers are the seventh most common globally, with lymph node metastasis (LNM) being a critical prognostic factor, significantly reducing survival rates. Traditional imaging methods have limitations in accurately diagnosing LNM. This meta-analysis aims to estimate the diagnostic accuracy of Artificial Intelligence (AI) models in detecting LNM in head and neck cancers.</p><p><strong>Methods: </strong>A systematic search was performed on four databases, looking for studies reporting the diagnostic accuracy of AI models in detecting LNM in head and neck cancers. Methodological quality was assessed using the METRICS tool and meta-analysis was performed using bivariate model in R environment.</p><p><strong>Results: </strong>23 articles met the inclusion criteria. Due to the absence of external validation in most studies, all analyses were confined to internal validation sets. The meta-analysis revealed a pooled AUC of 91% for CT-based radiomics, 84% for MRI-based radiomics, and 92% for PET/CT-based radiomics. Sensitivity and specificity were highest for PET/CT-based models. The pooled AUC was 92% for deep learning models and 91% for hand-crafted radiomics models. Models based on lymph node features had a pooled AUC of 92%, while those based on primary tumor features had an AUC of 89%. No significant differences were found between deep learning and hand-crafted radiomics models or between lymph node and primary tumor feature-based models.</p><p><strong>Conclusion: </strong>Radiomics and deep learning models exhibit promising accuracy in diagnosing LNM in head and neck cancers, particularly with PET/CT. Future research should prioritize multicenter studies with external validation to confirm these results and enhance clinical applicability.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"449-467"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11893643/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142625095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The role of carotid elongation for intervention time and outcome in mechanical thrombectomy for anterior circulation acute ischemic stroke.","authors":"Vivien Lorena Ivan, Christian Rubbert, Daniel Weiß, Luisa Wolf, Marius Vach, Marius Kaschner, Bernd Turowski, Michael Gliem, John-Ih Lee, Tobias Ruck, Julian Caspers","doi":"10.1007/s00234-024-03539-0","DOIUrl":"10.1007/s00234-024-03539-0","url":null,"abstract":"<p><strong>Introduction: </strong>This study investigates the influence of carotid artery elongation on neurovascular intervention and outcome in acute stroke treatments proposing an easily assessable imaging marker for carotid elongation.</p><p><strong>Methods: </strong>118 patients who underwent mechanical thrombectomy for middle cerebral artery occlusions were included. The carotid elongation ratio (CER), center-line artery length to scan's Z-axis, was measured on the affected side in CT-angiographies. Full and partial correlations of CER with periprocedural times, complications and outcome were computed. Multivariate logistic regression, including comorbidities, for prediction of dichotomized mRS outcome after 3 months was performed.</p><p><strong>Results: </strong>CER showed no significant correlation with recanalization success. Weak, outlier-driven correlation was found with recanalization time (p = 0.021, cor = 0.2). Weak correlations were found with improvement of NIHSS score at discharge and mRS score after 3 months (p = 0.023 and p = 0.031, each rho=-0.2). There was moderate correlation with NIHSS score at discharge (p = 0.001, rho = 0.3). Patients with favorable outcomes (mRS 0-2) exhibited lower CER (p = 0.012). Partial correlations of CER with favorable outcomes were observed after correcting for age, sex and cardiovascular risk factors (cor = 0.2, p = 0.048). Multivariate analysis (Nagelkerke's R2 = 0.42) identified NIHSS score at admission, diabetes, hypertension and intervention time as significant factors for predicting outcome at 3 month, while CER showed the highest log Odd's (2.97).</p><p><strong>Conclusion: </strong>Correlations between CER and clinical improvement suggest that carotid elongation might be a risk factor for poorer outcome without relevant effect on endovascular treatment and should not guide treatment decisions. Further studies should consider carotid elongation as an individual neurovascular risk factor, independent of hypertension.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"403-413"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11893713/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142952379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine learning based classification of spontaneous intracranial hemorrhages using radiomics features.","authors":"Phattanun Thabarsa, Papangkorn Inkeaw, Chakri Madla, Withawat Vuthiwong, Kittisak Unsrisong, Natipat Jitmahawong, Thanwa Sudsang, Chaisiri Angkurawaranon, Salita Angkurawaranon","doi":"10.1007/s00234-024-03481-1","DOIUrl":"10.1007/s00234-024-03481-1","url":null,"abstract":"<p><strong>Purpose: </strong>To assess the efficacy of radiomics features extracted from non-contrast computed tomography (NCCT) scans in differentiating multiple etiologies of spontaneous intracerebral hemorrhage (ICH).</p><p><strong>Methods: </strong>CT images and clinical data from 141 ICH patients from 2010 to 2022 were collected. The cohort comprised primary (n = 57), tumorous (n = 46), and vascular malformation-related ICH (n = 38). Radiomics features were extracted from the initial brain NCCT scans and identified potential features using mutual information. A hierarchical classification with AdaBoost classifiers was employed to classify the multiple etiologies of ICH. Age of the patient and ICH's location were examined alongside radiomics features. The accuracy, area under the curve (AUC), sensitivity, and specificity were used to evaluate classification performance.</p><p><strong>Results: </strong>The proposed method achieved an accuracy of 0.79. For identifying primary ICH, the model achieved a sensitivity of 0.86 and specificity of 0.87. Meanwhile, the sensitivity and specificity for identifying tumoral causes were 0.78 and 0.93, respectively. For vascular malformation, the model reached a sensitivity and specificity of 0.72 and 0.89, respectively. The AUCs for primary, tumorous, and vascular malformation were 0.86, 0.85, and 0.82, respectively. The findings further highlight the importance of texture-based variables in ICH classification. The age and location of the ICH can enhance the classification performance.</p><p><strong>Conclusion: </strong>The use of a machine learning model with radiomics features has the potential in classifying the three types of non-traumatic ICH. It may help the radiologist decide on an appropriate further examination plan to arrive at a correct diagnosis.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"339-349"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142378047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pipeline embolization device for aneurysm recurrence after stent-assisted coiling.","authors":"Weiming Kong, Shikai Liang, Xianli Lv","doi":"10.1007/s00234-024-03541-6","DOIUrl":"10.1007/s00234-024-03541-6","url":null,"abstract":"<p><strong>Objective: </strong>Since the emergence of the Pipeline Embolization Device (PED), its off-label use has significantly improved the treatment effectiveness of complex intracranial aneurysms, including the treatment of recurrent aneurysms. Although PED is effective in this situation, there is still a lack of evidence-based medicine for its role in recurrent aneurysms after stent-assisted coiling. The aim of this study is to evaluate the safety and efficacy of PED treatment for recurrent aneurysms after stent-assisted coiling.</p><p><strong>Methods: </strong>This study included 10 patients who underwent stent-assisted coiling but subsequently received PED treatment again due to aneurysm recurrence or rebleeding. The mean time between initial treatment and subsequent treatment is 12 months. Clinical outcomes include complications and modified Rankin Scale (mRS) scores, as well as evidence of complete occlusion.</p><p><strong>Results: </strong>All PEDs were successfully placed, with one case of minor perioperative complications. During the 6-month follow-up after PED implantation, 10 cases of recurrent aneurysms were completely occluded without any adverse clinical sequelae. In one case of vertebral artery aneurysm, balloon dilation was performed before placing PED due to arterial stenosis proximal to the aneurysm.</p><p><strong>Conclusion: </strong>The use of PED to treat recurrent aneurysms after stent-assisted coiling is a safe and effective treatment method.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"415-421"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143008943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Results of carotid stenting in patients with contralateral internal carotid artery occlusion: a retrospective single-center analysis and 22 years of experience.","authors":"Esra Kochan Kizilkilic, Yeşim Namdar Akan, Baran Atbas, Seyfullah Halit Karagöz, Bora Korkmazer, Serdar Arslan, Civan Islak, Naci Kocer, Osman Kizilkilic","doi":"10.1007/s00234-024-03524-7","DOIUrl":"10.1007/s00234-024-03524-7","url":null,"abstract":"<p><strong>Purpose: </strong>Patients with contralateral carotid artery occlusion (CCO) represent a subgroup of patients at risk for revascularization procedures. The choice of appropriate revascularization procedure (carotid endarterectomy (CEA) or carotid artery stenting (CAS)) in these patients is controversial. The aim of this study is to share the results of clinical and radiological follow-up after CAS in these patients and to contribute to the literature by evaluating the efficacy and safety of stenting.</p><p><strong>Methods: </strong>In our study, the clinical and radiological data of 145 patients with CCO and 145 age-gender-matched patients without CCO who underwent elective CAS in the interventional neuroradiology clinic between 2001 and 2023 were retrospectively analyzed. A comparison was made between short- and long-term outcomes between the two groups.</p><p><strong>Results: </strong>The overall technical success rate of CAS was 99.7% and the 30-day all-cause mortality rate was 1.4%. There was no statistically significant difference between the two groups in terms of early-term (intra-procedural thromboembolic events, post-procedural symptomatic hyperperfusion, intraparenchymal hemorrhage, major and minor ischemic stroke, early-term mortality rate) and long-term (intimal hyperplasia, residual stenosis, major and minor ischemic stroke and long-term all-cause mortality rate) (p > 0.05).</p><p><strong>Conclusion: </strong>In our experience, it was concluded that CAS performed by an experienced interventional neuroradiology team in patients with CCO does not pose an additional risk. Since CCO poses a risk for CAE, CAS may be a more acceptable treatment modality in these patients due to less perioperative risk. However, further research is required to support our findings.</p>","PeriodicalId":19422,"journal":{"name":"Neuroradiology","volume":" ","pages":"393-401"},"PeriodicalIF":2.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142872682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}