Publications by authors named "Shunsuke Hataoka"
Background: Severe vessel tortuosity may prevent a microcatheter from reaching a distal vessel. However, the Double-Wire Technique (DWT) may facilitate the procedure. The present study evaluated the feasibility and safety of guiding a 0.
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- - The study explored the use of a straight-shaped 3-Fr guiding sheath (GS) for endovascular treatment (EVT) via transradial artery access (TRA), focusing on patients with small radial artery diameters, specifically those under 2 mm.
- - A total of 26 cases were treated with the 3-Fr GS, primarily addressing unruptured cerebral aneurysms and other conditions, showing a high success rate of 96.2% without any complications in the first 30 days following the procedures.
- - The findings suggest that the 3-Fr GS is a promising option for EVT in patients with small radial arteries, enhancing safety and feasibility for treating selected vascular conditions.
Article Synopsis
- - The study investigates the potential risk of intraprocedural rupture (IPR) during coil embolization of ruptured intracranial aneurysms (RIAs) when using an intermediate catheter (IMC) compared to not using one.
- - A retrospective analysis of 195 aneurysms in 192 patients over 16 years found that the incidence of IPR was significantly higher in the IMC group (14.0% vs. 3.3%) and remained higher (23.1% vs. 3.8%) even after controlling for other variables.
- - The authors suggest that surgeons should exercise increased caution and care when using IMCs to prevent IPR during the embolization process.
Objective: To investigate on three-dimensional (3D) fusion images the apposition of low-profile visualized intraluminal support (LVIS) stents in intracranial aneurysms after treatment and assess inter-rater reliability.
Materials And Methods: Records of all patients with unruptured intracranial aneurysms who were treated with the LVIS stent were retrospectively accessed and included in this study. Two neurosurgeons evaluated the presence of malapposition between the vessel walls and the stent trunk (crescent sign) and the vessel wall and the stent edges (edge malappostion) on 3D fusion images.
Article Synopsis
- Advancements in high-resolution imaging and computational techniques have made clinical simulations for endovascular procedures increasingly practical, improving treatment planning for devices like virtual and braided stents.
- The use of 3D printing for realistic simulations aids in understanding complex procedures, facilitating training for both new and experienced surgeons dealing with conditions like arteriovenous malformations.
- Successful integration of medical and engineering approaches is critical for the future, along with necessary regulatory approvals and commercialization of these simulation technologies.
Article Synopsis
- - The study examines the effectiveness and safety of using intermediate catheters (IMCs) in triaxial systems for coil embolization of unruptured cerebral aneurysms (UCAs) by comparing two patient groups—those with IMC and those without.
- - A total of 2430 UCAs from 2259 patients were reviewed, revealing that patients with IMCs had a higher rate of complete occlusion and better coil packing density, with significant statistical differences noted.
- - Overall, using IMCs during the procedure resulted in improved outcomes without increasing the risk of complications, showing IMCs provide beneficial support in treating UCAs.
Background: Endovascular treatment (EVT) for acute large vessel occlusion has proven to be effective in randomized controlled trials. We conducted a prospective cohort study to evaluate the real-world efficacy of EVT in a metropolitan area with a large number of comprehensive stroke centers and to compare it with the results of other registries and randomized controlled trials (RCTs).
Methods: We analyzed the Kanagawa Intravenous and Endovascular Treatment of Acute Ischemic Stroke registry, a prospective, multicenter observational study of patients treated by EVT and/or intravenous tissue-type plasminogen activator (tPA).
Objective: Posterior cerebral artery (PCA) aneurysms are extremely rare and can be difficult to treat. We report successful trapping and thrombectomy of a giant thrombosed P2 segment aneurysm via a transpetrosal approach.
Case Presentation: A 62-year-old woman was admitted to our hospital with a progressive left hemiparesis.
Background: We reviewed the clinical outcomes of a procedure that combines endovascular embolization and a direct surgical approach in a hybrid operating room (OR) for the treatment of refractory dural arteriovenous fistulas (dAVFs).
Methods: All patients with intracranial dAVFs who underwent a procedure combining endovascular embolization and direct surgical approach with biplane angiography or a robotic C-arm system in a hybrid OR between February 2004 and June 2020 were considered. Borden grading, occlusion rate, pre-and post-operative modified Rankin Scale (mRS) scores, and complications were retrospectively investigated.
Purpose: To assess the benefit and radiation dose of four-dimensional (4D) digital subtraction angiography (DSA) - a time resolved three-dimensional (3D) DSA application - to evaluate the flow and architecture of aneurysms and vascular malformations.
Methods: All patients with cerebrovascular disease were considered who underwent 4D-DSA at our institution between January 2015 and February 2016. For the aneurysm patients, we evaluated the image quality in terms of the visualization of contrast flow in the aneurysm on a 3-point scale (excellent, fair and poor).
Objectives This study aimed to clarify the drainage location of the superior petrosal vein (SPV) in relation to Meckel's cave and the internal acoustic meatus (IAM) and to discuss its significance in petroclival meningioma surgery. Design Prospective clinical study. Setting Hospital-based.
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