• Department of Respiratory Medicine,Peking Union Medical College Hospital,Peking Union Medical College,Chinese Academy of Medical Science.Beijing,100730,China Corresponding author:CAI Bai-qiang,E-mail:caibq@hotmail.com;
CAI Baiqiang., Email: caibq@hotmail.com
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Objective  Vibration response imaging(VRI) is a new lung sound imaging technology.It provides quantitative lung data(QLD) of vibration in respiratory system.The study is to explore the value of QLD in diagnosis of obstructive lung diseases.Methods  The QLD of 61 chronic obstructive pulmonary disease(COPD) patients,58 asthma patients and 64 healthy volunteers were reviewed.The QLD were transferred to abnormity and variation by a formulation and were analyzed.Results  The mean QLD of healthy volunteers were 8.4,14.5,22.0,11.1,18.5,25.5 with mean abnormity as 10.0 and mean variation as 2.0.The mean QLD of the COPD patients were 11.6,16.7,21.9,12.6,17.2,20.1 with mean abnormity as 47.1 and mean variation as 10.9.The mean QLD of the asthma patients were 12.8,17.2,19.9,13.3,17.5,19.3 with mean abnormity as 58.1 and mean variation as 12.2.The abnormity and variation of the patients were different from those of volunteers(P lt;0.05).When abnormity≥20.0 or variation≥5.0 was define as threshold value,the specificity was 87.5%.The diagnosis sensitivity for COPD is 82.0% and sensitivity for asthma is 82.8%.Conclusion  COPD and asthma patients can be detected by quantitative lung data from vibration response imaging.

Citation: LI Jun,CAI Baiqiang.. The valuation of quantitative lung data of vibration response imaging in diagnosis of obstructive lung diseases. Chinese Journal of Respiratory and Critical Care Medicine, 2008, 08(3): 165-168. doi: Copy

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