慢性阻塞性肺疾病，簡稱為COPD，為一種進行性、不可逆的肺部疾病，患者因為長期的肺部發炎導致呼吸道的阻塞，使氣體無法通暢的進出呼吸道，本研究應用電阻抗斷層成像技術，此項技術是一種基於生物組織電特性的醫學成像技術，它根據待測物內部的導電特性的不同，透過電極施加一個安全穩定的電流，經量測電極獲得電壓，得知待測物內部電阻抗的分佈，進一步重建出待測物內部斷層的影像，是一種非侵入式、沒有輻射線以及可以動態即時量測的肺部通氣的工具，量測COPD患者於進行肺量計檢查時及時的胸腔斷層影像，並經過數據分析觀察進行肺量計檢查時肺部內各區域的通氣速度、通氣量及通氣順序，進行定性比較，並利用時序不同，將流入與流出肺泡的氣體以不同顏色區分，藉以區辨局部肺部通氣狀況。同時蒐集呼吸困難評估量表 (The modified British Medical Research Council，簡稱mMRC)問卷、COPD評估測試問卷(COPD Assessment Test，簡稱CAT)，於病歷系統中回溯個案於六個月內進行之胸腔電腦斷層影像，以利了解從電阻抗影像所得之成像變化是否與肺部組織變化、肺容量及患者日常生活中呼吸困難程度有關，根據其間之相關性，用於對不同亞型的患者進行分析。

Chronic obstructive pulmonary disease, referred to as COPD, is a progressive and irreversible lung disease. The patient's airway is blocked due to long-term lung inflammation, making it impossible for the air to enter and exit the airway smoothly. This study used electrical impedance tomography technology. The thoracic tomographic images, and the data analysis to observe the ventilation rate, ventilation volume and ventilation sequence of each area in the lung during the spirometer examination, make a qualitative comparison, and use the different time series to distinguish the gas flowing into and out of the alveoli with different colors . To distinguish the local lung ventilation. At the same time, the questionnaire were collected, and the chest CT images performed within six months of the case were retrospectively collected in the medical record system.

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