Infrared Imaging for Leak Detection of N95 Filtering Facepiece Respirators: A Pilot Study
Infrared Imaging for Leak Detection of N95 Filtering Facepiece Respirators: A Pilot Study
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DOI：
10.1002/ajim.20970
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发表时间：
2011-08-01
影响因子：
3.5
通讯作者：
Bergman, Michael S.
中科院分区：
文献类型：
--
作者：
Roberge, Raymond J.;Monaghan, William D.;Bergman, Michael S.
本研究旨在确定红外摄像机（IRC）在定量呼吸器适配测试中评估过滤式面罩呼吸器（FFR）周围泄漏的实用性。方法8名被试对6种N95 FFR模型（共48次）进行定量拟合检验，同时进行IRC记录。结果IRC在39次试验中检出49次呼气泄漏，9次试验无泄漏。在所有失败的配合试验（13例）和大多数（35例中的26例）通过的试验中发现了呼气泄漏。解剖学上，鼻区和颧（颧骨）区占已确定泄漏部位的71%。未发现呼气泄漏的拟合试验的拟合因子显著高于IRC检测泄漏的拟合试验（P = 0.01）。结论使用IRC热成像可以检测呼吸防护设备的泄漏，并有可能作为评估佩戴后FFR是否合适的筛查工具。点。中华医学杂志，2011,34(4):628-636。(C) 2011 Wiley-Liss, Inc。
Background This study was undertaken to determine the utility of an infrared camera (IRC) for assessing leaks around filtering facepiece respirators (FFR) during quantitative respirator fit testing.Methods Eight subjects underwent quantitative fit testing on six N95 FFR models (48 total fit tests) while simultaneously being recorded with an IRC.Results The IRC detected 49 exhalation leaks during 39 tests and no leaks in nine tests. Exhalation leaks were identified in all failed fit tests (13) and a majority (26 of 35) of passed tests. Anatomically, the nasal region and malar (cheekbone) regions accounted for 71% of identified leak sites. Fit factors for fit tests without identified exhalation leaks were significantly higher than fit tests with leaks detected by IRC (P = 0.01).Conclusions Thermal imaging using IRC can detect leaks in respiratory protective equipment and has the potential as a screening tool for assessment of the adequacy of post-donning FFR fit. Am. J. Ind. Med. 54:628-636, 2011. (C) 2011 Wiley-Liss, Inc.