Center for Interventional Oncology, Radiology and Imaging Sciences, NIH Clinical Center and National Cancer Institute, Center for Cancer Research, National Institutes of Health, Bethesda, MD 20892.
Molecular Imaging Branch, National Cancer Institute, NIH, Bethesda, Maryland.
Acad Radiol. 2020 Aug;27(8):1119-1125. doi: 10.1016/j.acra.2020.05.017. Epub 2020 May 25.
The use of chest computed tomography (CT) in the era of the COVID-19 pandemic raises concern regarding the transmission risks to patients and staff caused by CT room contamination. Meanwhile the Center for Disease Control guidance for air exchange in between patients may heavily impact workflows. To design a portable custom isolation device to reduce imaging equipment contamination during a pandemic.
Center for Disease Control air exchange guidelines and requirements were reviewed. Device functional requirements were outlined and designed. Engineering requirements were reviewed. Methods of practice and risk mitigation plans were outlined including donning and doffing procedures and failure modes. Cost impact was assessed in terms of CT patient throughput.
CT air exchange solutions and alternatives were reviewed. Multiple isolation bag device designs were considered. Several designs were custom fabricated, prototyped and reduced to practice. A final design was tested on volunteers for comfort, test-fit, air seal, and breathability. Less than 14 times enhanced patient throughput was estimated, in an ideal setting, which could more than counterbalance the cost of the device itself.
A novel isolation bag device is feasible for use in CT and might facilitate containment and reduce contamination in radiology departments during the COVID Pandemic.
在 COVID-19 大流行期间，胸部计算机断层扫描（CT）的使用引起了人们对 CT 机房污染对患者和工作人员造成的传播风险的担忧。同时，疾病控制中心对患者之间空气交换的指导意见可能会严重影响工作流程。设计一种便携式定制隔离装置，以减少大流行期间成像设备的污染。
回顾了疾病控制中心的空气交换指南和要求。概述并设计了设备功能要求。审查了工程要求。概述了实践方法和风险缓解计划，包括穿戴和脱卸程序以及失效模式。根据 CT 患者吞吐量评估了成本影响。
对 CT 空气交换解决方案和替代方案进行了审查。考虑了多种隔离袋装置设计。定制制造、原型制作并付诸实践了几种设计。最终设计在志愿者身上进行了舒适性、适配性、空气密封性和透气性测试。在理想情况下，估计患者吞吐量提高不到 14 倍，这足以抵消设备本身的成本。
一种新型隔离袋装置可用于 CT，可在 COVID 大流行期间有助于控制和减少放射科的污染。
