Publications by authors named "Yasuhito Ueki"
Optimizing the hemodynamics of hand injections in neuroangiography.
Interv Neuroradiol
December 2024
Article Synopsis
- This study investigates how different methods of injecting contrast media can optimize flow rates, which affects the speed and ease of manual injections.
- It compares 100% contrast solutions, mixed contrast with saline, and a layered "Parfait" method, both at room temperature and after heating.
- Results show that both Parfait and mixed contrast solutions achieve significantly higher flow rates than 100% contrast, and heating the solutions enhances flow rates even further.
Article Synopsis
- The study examined the effectiveness of the Woven EndoBridge (WEB) device in sealing aneurysms by focusing on neck apposition and its relation to occlusion rates.
- Researchers analyzed data from 159 aneurysms treated between March 2017 and May 2022, finding that good neck apposition led to a significantly higher likelihood of achieving complete and adequate occlusion.
- The results suggested that minimizing WEB protrusion is important because it increased the risk of thromboembolic complications, even though it may have a limited effect on aneurysm occlusion rates.
Background And Purpose: A single-aspiration maneuver using a large-volume syringe is a common and effective technique for aspiration thrombectomy. Multiple aspiration cycles using large aspiration syringes have been proposed as a means to improve the efficacy over single aspiration. In this study, we sought to investigate the efficacy of a "triple aspiration technique" in which a large-volume syringe is cycled 3 times before catheter retraction during aspiration thrombectomy.
View Article and Find Full Text PDFThe New Zealand rabbit elastase-induced arterial aneurysm of the right common carotid artery remains a widely used model for assessing the effectiveness and safety of new neuroendovascular devices.1 This model offers a simple and reliable platform for pre-clinical investigations, crucial for comprehending the biological processes underlying aneurysm healing after endovascular treatment.2 Notably, the induced aneurysm exhibits morphological, hemodynamic, and histological characteristics similar to human intracranial aneurysms.
View Article and Find Full Text PDFBackground: Cerebrospinal fluid (CSF) rhinorrhea with meningoencephalocele (MEC) associated with Sternberg's canal is rare. We treated two such cases.
Case Description: A 41-year-old man and a 35-year-old woman presented with CSF rhinorrhea and mild headache worsening with standing posture.