Evaluation of a new fiber-grating vision sensor for assessing pulmonary functions in healthy and COPD subjects
Evaluation of a new fiber-grating vision sensor for assessing pulmonary functions in healthy and COPD subjects
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DOI：
10.1088/0967-3334/32/10/015
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发表时间：
2011-10-01
影响因子：
3.2
通讯作者：
Asano, K.
中科院分区：
文献类型：
--
作者：
Tsujimura, S.;Nakamura, H.;Asano, K.
肺活量测定法实际上是评估肺功能的唯一工具。预计还会出现与肺活量测定法相当的其他自动系统。光纤光栅 (FG) 视觉传感器是一种非接触式呼吸监测系统，通过测量体表激光点的移动来检测体积变化。我们研究了 FG 传感器对评估肺功能的贡献。 FG 传感器显示与从五个对照获得的潮气量 (TV) 中的肺量计呈线性相关 (R = 0.98，P < 0.0001)。我们还使用 Bland-Altman 分析显示了两种设备之间电视的一致性。 FG 传感器测量的 TV 具有可重复性并且适用于不同的受试者。为了检测气道阻塞情况，我们使用 FG 传感器和肺量计对对照组 (n = 16) 和慢性阻塞性肺疾病 (COPD) 患者 (n = 18) 进行强制呼气。 FG 传感器测得的 COPD 患者 1 秒用力呼气量 (FEV1) 和 FEV1/用力肺活量低于对照组。此外，FG 传感器自然呼吸时呼气时间延长与肺活量测定法的气流限制有关。 FG 传感器有助于测量对照组和 COPD 患者的容量变化并评估肺功能。其即将到来的临床应用因其简单性和可行性而前景广阔。
Spirometry is practically the only tool to evaluate pulmonary functions. Other automatic systems comparable to spirometry are expected. Afiber-grating (FG) vision sensor is a non-contact respiratory monitoring system to detect changes in volumes by measuring the movement of laser spots on the body surface. We examined the contributions of the FG sensor to evaluating pulmonary functions. The FG sensor showed a linear correlation with spirometry in tidal volumes (TV) obtained from five controls (R = 0.98, P < 0.0001). We also showed agreement of TV between the two devices using Bland-Altman analysis. TV measured by the FG sensor were reproducible and applicable to distinct subjects. To detect airway obstruction, we performed forced expiration in controls (n = 16) and chronic obstructive pulmonary disease (COPD) patients (n = 18) with the FG sensor and spirometry. Forced expiratory volume in 1 s (FEV1) and FEV1/forced vital capacity in COPD patients were lower than those in controls by the FG sensor. In addition, prolonged expiration in natural breathing by the FG sensor was related to airflow limitation by spirometry. The FG sensor was helpful to measure volume changes and to evaluate pulmonary functions in controls and patients with COPD. Its upcoming clinical applications are promising for simplicity and feasibility.