School of Medicine, Case Western Reserve University Otolaryngology, Head and Neck Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH 44106.
Department of Mechanical and Aerospace Engineering, Case Western Reserve University Cleveland, Cleveland, OH 44106.
J Biomech Eng. 2023 Jul 1;145(7). doi: 10.1115/1.4062191.
The potential for characterizing aerosol generating procedures (AGPs) using background oriented schlieren (BOS) flow visualization was investigated in two clinical situations. A human-scale BOS system was used on a manikin simulating jet ventilation and extubation. A novel approach to representation of the BOS images using line integral convolution allows direct evaluation of both magnitude and direction of the refractive index gradient field. Plumes issuing from the manikin's mouth were clearly visualized and characterized in both experiments, and it is recommended that BOS be adapted into a clinical tool for risk evaluation in clinical environments.
使用背景 oriented schlieren (BOS) 流动可视化技术对两种临床情况下的气溶胶生成程序 (AGP) 进行特征描述的可能性进行了研究。在模拟喷射通气和拔管的人工模型上使用了人体规模的 BOS 系统。使用线积分卷积表示 BOS 图像的新方法允许直接评估折射率梯度场的大小和方向。从人工模型口中喷出的羽流在两项实验中都清晰可见并得到了很好的描述,建议将 BOS 改编为临床工具,用于评估临床环境中的风险。