Interventional Neuroradiology最新文献

{"title":"Venous outflow stenting for symptomatic developmental venous anomaly.","authors":"Kislay Kishore, Vivek Bodani, Richard Olatunji, MingYang Meah Gao, Vivek Pai, Thomas Marotta, Julian Spears, Vitor Mendes Pereira","doi":"10.1177/15910199221121370","DOIUrl":"10.1177/15910199221121370","url":null,"abstract":"<p><p>Developmental venous anomaly (DVA) is one of the commonest vascular malformations in the brain but rarely symptomatic. Various pathomechanisms such as mechanical compression, increased in-flow into DVA or outflow obstruction have been described as causative factors in symptomatic DVAs. We report a unique case of a pontomedullary DVA with venous outflow obstruction causing progressive neurological worsening in a young adult despite anticoagulation, who was treated with a novel approach of venous outlet stenting of the collector vein with favorable outcome. In carefully selected cases, this endovascular treatment can be an effective and safe alternative when other measures fail.</p>","PeriodicalId":14380,"journal":{"name":"Interventional Neuroradiology","volume":" ","pages":"128-131"},"PeriodicalIF":1.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833900/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40706607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Validation of the Charlotte large artery occlusion endovascular therapy outcome score using Viz.ai-derived cerebral blood volume index.","authors":"Rahul R Karamchandani, Hongmei Yang, Jeremy B Rhoten, Dale Strong, Sagar Satyanarayana, Andrew W Asimos","doi":"10.1177/15910199221149563","DOIUrl":"10.1177/15910199221149563","url":null,"abstract":"<p><strong>Background: </strong>The Charlotte large artery occlusion endovascular therapy outcome score (CLEOS) predicts poor 90-day outcomes for patients presenting with internal carotid artery (ICA) or middle cerebral artery (MCA) occlusions. It incorporates RAPID-derived cerebral blood volume (CBV) index, a marker of collateral circulation. We validated the predictive ability of CLEOS with Viz.ai-processed computed tomography perfusion (CTP) imaging.</p><p><strong>Methods: </strong>The original CLEOS derivation cohort was compared to a validation cohort consisting of all ICA and MCA thrombectomy patients treated at a large health system with Viz.ai-processed CTP. Rates of poor 90-day outcome (mRS 4-6) were compared in the derivation and validation cohorts, stratified by CLEOS. CLEOS was compared to previously described prediction models using area under the curve (AUC) analyses. Calibration of CLEOS was performed to compare predicted risk of poor outcomes with observed outcomes.</p><p><strong>Results: </strong>One-hundred eighty-one patients (mean age 66.4 years, median NIHSS 16) in the validation cohort were included. The validation cohort had higher median CTP core volumes (24 vs 8 ml) and smaller median mismatch volumes (81 vs 101 ml) than the derivation cohort. CLEOS-predicted poor outcomes strongly correlated with observed outcomes (<i>R</i>² = 0.82). AUC for CLEOS in the validation cohort (0.72, 95% CI 0.64-0.80) was similar to the derivation cohort (AUC 0.75, 95% CI 0.70-0.80) and was comparable or superior to previously described prognostic models.</p><p><strong>Conclusions: </strong>CLEOS can predict risk of poor 90-day outcomes in ICA and MCA thrombectomy patients evaluated with pre-intervention, Viz.ai-processed CTP.</p>","PeriodicalId":14380,"journal":{"name":"Interventional Neuroradiology","volume":" ","pages":"80-87"},"PeriodicalIF":1.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833827/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10496574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"pCONUS 2 and pCONUS 2-HPC in the treatment of wide-necked intracranial aneurysms: Multicentre UK experience.","authors":"James Yeomans, Simon Gatt, Ezaz Habeeb Mohamed, Robert Crossley, Peter Keston, David Minks, Nicholas Dobbs, Alexander Mortimer, Jonathan Downer, Anand Sastry","doi":"10.1177/15910199221150467","DOIUrl":"10.1177/15910199221150467","url":null,"abstract":"<p><strong>Background/purpose: </strong>pCONUS 2 and pCONUS 2-HPC are neck-bridging devices that provide coiling support in the endovascular treatment of wide-necked intracranial aneurysms. To date, limited multicentre data has been published. This study provides the first pooled data from multiple UK centres regarding outcomes for these devices covering the periprocedural period to 6-month follow-up.</p><p><strong>Materials/methods: </strong>This retrospective, single-arm study assessed 65 patients treated over 3 years from the time of procedure to 6 months post-procedure across four UK centres. Data collected included patient demographics, aneurysm characteristics and antiplatelet regimens. Outcome measures were angiographic results and procedure-related complications from the immediate periprocedural period to 6-month follow-up.</p><p><strong>Results: </strong>Fifty-four unruptured (83.1%) and 11 ruptured (16.9%) aneurysms were treated. Fifty-five aneurysms were located in the anterior circulation (87.7%). There were four device-related intraprocedural complications: three cases of asymptomatic, temporary thrombus formation and one mortality associated with branch vessel occlusion and aneurysm re-bleeding in a ruptured case. There were no post-procedural device-related complications. Satisfactory occlusion was achieved in 58/65 procedures (89.2%) at time of treatment and in 44/60 (73.3%) at 6 months. Satisfactory occlusion correlated with aneurysm size and coiling packing density. Retreatment was required for five unruptured cases (7.7%) and was straightforward with the device in situ.</p><p><strong>Conclusion: </strong>pCONUS 2 and pCONUS 2-HPC have good short-term safety profiles. The use of pCONUS 2-HPC in the acute treatment of ruptured aneurysms with postprocedural SAPT is feasible. The devices have an intraprocedural complication rate of 4/65 (6.2%) across multiple UK centres, including a single death (1.5%).</p>","PeriodicalId":14380,"journal":{"name":"Interventional Neuroradiology","volume":" ","pages":"63-70"},"PeriodicalIF":1.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833899/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10846784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fractal analysis of healthy and diseased vasculature in pediatric Moyamoya disease.","authors":"Daniel S Weber, Kevin T Huang, Alfred P See","doi":"10.1177/15910199231152513","DOIUrl":"10.1177/15910199231152513","url":null,"abstract":"<p><strong>Background and purpose: </strong>Fractal dimension is an objective metric for the notion of structural complexity. We sought to investigate differences in structural complexity between healthy and affected territories of cerebral vasculature in moyamoya, as well as associated scalp vasculature and native transdural collaterals in patients with moyamoya by comparing their respective fractal dimensions.</p><p><strong>Methods: </strong>Our cohort consisted of 15 transdural collaterals from 12 patients with unilateral anterior circulation moyamoya. Frames of distal arterial vasculature from internal and external carotid angiograms were selected then automatically segmented and also manually annotated by a cerebrovascular surgeon. In the affected hemisphere, the region with transdural collateral supply was compared to the contralateral region. The resulting skeletonized angiograms were analyzed for their fractal dimensions.</p><p><strong>Results: </strong>We found the average fractal dimension (Df) of the moyamoya-side ICA was 1.82 with slightly different means for the anteroposterial (AP) and lateral views (mean  =  1.82; mean  =  1.81). The overall mean for healthy cerebral vasculature was also found to be 1.82 (AP: mean  =  1.83; lateral: mean  =  1.81). Mean Df of native transdural collaterals was found to be 1.82 (AP: mean  =  1.83; lateral: mean  =  1.81). The mean Df difference between autosegmented and manually segmented images was 0.013.</p><p><strong>Conclusion: </strong>In accordance with the clinical understanding of moyamoya disease, the distal arterial structural complexity is not affected in moyamoya, and is maintained by transdural collaterals formed by vasculogenesis. Autosegmentation of cerebral vasculature is also shown to be accurate when compared to manual segmentation.</p>","PeriodicalId":14380,"journal":{"name":"Interventional Neuroradiology","volume":" ","pages":"101-106"},"PeriodicalIF":1.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833850/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10628824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness and safety of the Trevo® Retriever for mechanical thrombectomy in Chinese patients with acute ischemic stroke: Trevo Retriever China Registry.","authors":"Xuelei Zhang, Jinchao Liu, Hongxing Han, Pinyuan Zhang, Xianglin Chen, Haicheng Yuan, Maohua Chen, Qiyi Zhu, David S Liebeskind, Zhongrong Miao","doi":"10.1177/15910199231151275","DOIUrl":"10.1177/15910199231151275","url":null,"abstract":"<p><strong>Background: </strong>To quantify the effectiveness and safety of the Trevo® Retriever for endovascular treatment of acute ischemic stroke (AIS) patients in China.</p><p><strong>Methods: </strong>Trevo Retriever Registry (China) was a prospective, multicenter, non-comparative, open-label study of patients with AIS treated with the Trevo Retriever. The primary outcome was the proportion of patients achieving an expanded Thrombolysis in Cerebral Infarction (eTICI) score ≥2b at the end of endovascular treatment. Secondary outcomes included first-pass eTICI score ≥2b and 90-day modified Rankin Scale (mRS) score ≤2.</p><p><strong>Results: </strong>The Trevo Retriever Registry (China) enrolled and followed 201 patients (62.1 ± 12.5 years-old; 70.6% male) at 11 centers. The pre-procedure NIHSS score and ASPECTS were 16 (interquartile range (IQR), 13-21) and 7 (IQR, 6-9), respectively, and 188 (93.5%) patients had an mRS score of 0 prior to the stroke. The main stroke etiology was large artery atherosclerosis, accounting for 71.6% (144/201) of patients. Post-procedure eTICI ≥2b was 98.4% (187/190). First-pass eTICI ≥2b was 74.7% (136/182). The 90-day good outcome (mRS ≤2) rate was 73.6% (148/201). The 90-day all-cause mortality was 5.5% (11/201). Neurological deterioration at 24 h post-procedure was observed in 7.7% (15/195) patients. Embolism in a new territory was seen in one patient (0.5%). Two (1.0%) procedure-related adverse events (AEs) occurred, which were intra-procedure cerebral artery embolism. No Trevo related AEs occurred.</p><p><strong>Conclusions: </strong>This real-world study of the Trevo Retriever in China demonstrated a high rate of revascularization and first-pass success that resulted in an overall high good function outcome rate and low mortality.</p>","PeriodicalId":14380,"journal":{"name":"Interventional Neuroradiology","volume":" ","pages":"107-113"},"PeriodicalIF":1.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833908/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10621764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of optical coherence tomography in selected patients with recurrent cryptogenic stroke: A case series and technical discussion.","authors":"Răzvan Alexandru Radu, Federico Cagnazzo, Imad Derraz, Cyril Dargazanli, Grégory Gascou, Pierre-Henri Lefevre, Caroline Arquizan, Vincent Costalat","doi":"10.1177/15910199221150472","DOIUrl":"10.1177/15910199221150472","url":null,"abstract":"<p><strong>Background: </strong>Despite advances in secondary stroke prevention during the last several years, cryptogenic stroke remains associated with a high risk of recurrence. Studies have shown that the recurrence risk is higher in patients with large artery disease in which complex carotid plaques and carotid WEBs are identified.</p><p><strong>Methods: </strong>This is a case series of six patients with cryptogenic recurrent stroke in which conventional imaging and extensive workup did not identify an etiology. Intravascular optic coherence tomography (OCT) was performed using a ballon-guided flow-arrest technique to identify possible covert carotid lesions.</p><p><strong>Results: </strong>We present six cases in which, with the help of OCT, we identified three carotid WEBs with associated thrombosis and two ulcerated carotid artery plaques. Four patients were subsequently treated with endovascular stent placement without complications. OCT permitted the distinction between complicated carotid artery plaque and carotid WEB.</p><p><strong>Conclusion: </strong>Intravascular OCT is a feasible and safe approach to identifying patients with covert carotid wall abnormalities, like carotid WEBs and ulcerated plaques, that are amenable to carotid stenting to reduce recurrent stroke risk.</p>","PeriodicalId":14380,"journal":{"name":"Interventional Neuroradiology","volume":" ","pages":"88-94"},"PeriodicalIF":1.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833837/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10506251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of operator's experience on mechanical thrombectomy outcomes: A systematic review.","authors":"Xenos Dimitrios, Sherief Ghozy, Charalampopoulou Christina, Antonia Kolovoy, Kadirvel Ramanathan, David F Kallmes","doi":"10.1177/15910199231157921","DOIUrl":"10.1177/15910199231157921","url":null,"abstract":"<p><strong>Background: </strong>Mechanical thrombectomy (MT) has become the standard of care for stroke patients. The majority of the clinical trials and publications analyzing the outcomes related to the procedures report interventional performance by experienced practitioners. However, few of them individualize their preliminary metrics according to the operator's experience.</p><p><strong>Objective: </strong>To summarize the literature and report safety and efficacy outcomes following MT procedures and correlate them with the operator's experience. Primary outcomes were successful recanalization, defined as modified thrombolysis in cerebral infarction greater or equal to 2b or 3, duration of the procedure measured in minutes, and serious adverse event.</p><p><strong>Methods: </strong>This systematic review was performed according to the PRISMA guidelines. The PubMed, Embase, and Cochrane databases were utilized.</p><p><strong>Results: </strong>There were six studies comprising 9348 patients (mean age 69.8 years; 51.2% males), and 9361 MT procedures were included. Each publication used for this review used a different experience definition to report their data. Higher interventionists' experience demonstrated a positive relationship with the possibility of successful recanalization and an inverse relationship with the duration needed for the operation in almost all of the included studies. As for the complications, none of the authors reported a statistically significant risk reduction of an adverse event, except Olthuis et al. correlating increasing training with lower odds of stroke progression.</p><p><strong>Conclusions: </strong>A higher experience level is associated with better recanalization rates and shorter procedural duration in MT operations. Further studies are warranted to define the minimum required level of experience for operational autonomy.</p>","PeriodicalId":14380,"journal":{"name":"Interventional Neuroradiology","volume":" ","pages":"121-127"},"PeriodicalIF":1.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833845/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10740767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Management of WEB device migration and mal-position in endovascular treatment of cerebral aneurysms.","authors":"Gilbert Gravino, Souhyb Masri, Arun Chandran, Mani Puthuran","doi":"10.1177/15910199221122857","DOIUrl":"10.1177/15910199221122857","url":null,"abstract":"<p><p>With increasing advances in technology, the breadth of aneurysms that are treatable via an endovascular approach has increased. Wide necked aneurysms remain difficult to treat but the emergence of dedicated intrasaccular flow disruption devices such as the Woven EndoBridge (WEB, Micorvention) has increasingly seen previously ruptured and unruptured wide necked aneurysms successfully embolised and secured from the circulation using a single device.We are reporting two cases of WEB device treatment from the earliest experience with this device at our institution. These were complicated by partial extrusion in one case and remote migration of the WEB device in another case. Our initial cases highlight the importance of case selection and the need for accurate WEB sizing which are paramount to ensure complete occlusion of the aneurysm without complications of dislocation or extrusion into the parent vessel. Since then, we have performed over 170 cases with the WEB device. We also present a comprehensive review of the limited literature available on the management of mal-positioned and dislocated WEB devices. This allows us to reflect on how to avoid these complications and the different management options at the disposal of the neuro-interventionalist once such a complication has already occured. Rescue devices and manoeuvres that we reflect on include microcatheter manipulation, alligator retrieval device, stent retrievers, microsnares, aspiration, and stenting. Ultimately, each case needs to be individually evaluated and the best strategy selected depends on the context and specific circumstances.</p>","PeriodicalId":14380,"journal":{"name":"Interventional Neuroradiology","volume":" ","pages":"132-141"},"PeriodicalIF":1.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833846/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33439142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automated CT angiography collateral scoring in anterior large vessel occlusion stroke: A multireader study.","authors":"Mohamed Sobhi Jabal, David F Kallmes, George Harston, Norbert Campeau, Kara Schwartz, Steven Messina, Carrie Carr, John Benson, Jason Little, Alex Nagelschneider, Ajay Madhavan, Deena Nasr, Sherry Braksick, James Klaas, Eugene Scharf, Cem Bilgin, Waleed Brinjikji","doi":"10.1177/15910199221150470","DOIUrl":"10.1177/15910199221150470","url":null,"abstract":"<p><strong>Background: </strong>Computed tomography (CT) angiography collateral score (CTA-CS) is an important clinical outcome predictor following mechanical thrombectomy for ischemic stroke with large vessel occlusion (LVO). The present multireader study aimed to evaluate the performance of e-CTA software for automated assistance in CTA-CS scoring.</p><p><strong>Materials and methods: </strong>Brain CTA images of 56 patients with anterior LVO were retrospectively processed. Twelve readers of various clinical training, including junior neuroradiologists, senior neuroradiologists, and neurologists graded collateral flow using visual CTA-CS scale in two sessions separated by a washout period. Reference standard was the consensus of three expert readers. Duration of reading time, inter-rater reliability, and statistical comparison of readers' performance metrics were analyzed between the e-CTA assisted and unassisted sessions.</p><p><strong>Results: </strong>e-CTA assistance resulted in significant increase in mean accuracy (58.6% to 67.5%, p = 0.003), mean F1 score (0.574 to 0.676, p = 0.002), mean precision (58.8% to 68%, p = 0.007), and mean recall (58.7% to 69.9%, p = 0.002), especially with slight filling deficit (CTA-CS 2 and 3). Mean reading time was reduced across all readers (103.4 to 59.7 s, p = 0.001), and inter-rater agreement in CTA-CS assessment was increased (Krippendorff's alpha 0.366 to 0.676). Optimized occlusion laterality detection was also noted with mean accuracy (92.9% to 96.8%, p = 0.009).</p><p><strong>Conclusion: </strong>Automated assistance for CTA-CS using e-CTA software provided helpful decision support for readers in terms of improving scoring accuracy and reading efficiency for physicians with a range of experience and training backgrounds and leading to significant improvements in inter-rater agreement.</p>","PeriodicalId":14380,"journal":{"name":"Interventional Neuroradiology","volume":" ","pages":"95-100"},"PeriodicalIF":1.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833891/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10539381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thoracolumbar spinal dural arteriovenous fistulae present with longer arteriovenous transit compared to cranial and cervical dural fistulae.","authors":"Ze'ev Itsekzon-Hayosh, Eef J Hendriks, Sean T O'Reilly, Rabab Al Shahrani, Ronit Agid, Patrick Nicholson, Karel Terbrugge, Ivan Radovanovic, Hugo Andrade, Joanna D Schaafsma, Timo Krings","doi":"10.1177/15910199221149096","DOIUrl":"10.1177/15910199221149096","url":null,"abstract":"<p><strong>Background: </strong>Thoraco-lumbar spinal dural arteriovenous fistulae represent a rare subset of central nervous system vascular malformations. One of the unique features of spinal dural arteriovenous fistulae is their extremely low propensity to cause hemorrhage (either parenchymal or subarachnoid), with a distinct clinical presentation of myelopathy secondary to spinal venous congestion. The exact mechanism for this unique presentation is still unclear.</p><p><strong>Methods: </strong>Following institutional review board approval, we retrospectively analyzed our prospectively maintained database of spinal dural arteriovenous fistulae and cranial (cr) DAVF cases presenting between 2008 and 2021. For all cases, angiograms were reviewed and arteriovenous transit times were calculated. Patient demographics, angiographic features, and clinical and radiological outcomes were assessed.</p><p><strong>Results: </strong>In total, 66 patients presenting with confirmed thoracolumbar spinal dural arteriovenous fistulaes were identified and compared to patients presenting with cervical spinal dural arteriovenous fistulaes (<i>n</i>  =  10), ruptured crDAVFs (<i>n</i>  =  32) and unruptured crDAVFs (<i>n</i>  =  20). Mean age in the target group was 66  ±  13 versus 57-62 in the other groups, <i>p</i> < 0.05 on one-way analysis of variance; with 80% males versus 50%-65% in other groups. Mean arteriovenous transit time in the thoracolumbar group measured 1.98 s ± 0.96 versus 0.25-0.5 s range in other groups (<i>p</i> < 0.0001 on one-way analysis of variance).</p><p><strong>Conclusion: </strong>Prolonged arteriovenous transit times may represent a distinct feature of thoracolumbar spinal dural arteriovenous fistulaes. This may, amongst other factors, play a role in the observed lesser likelihood of hemorrhagic complications compared to other dural arteriovenous shunts.</p>","PeriodicalId":14380,"journal":{"name":"Interventional Neuroradiology","volume":" ","pages":"57-62"},"PeriodicalIF":1.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833911/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10494376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}