2016 Fiscal Year Final Research Report
Accurate detection of patients with pulmonary emphysema robust to heart sounds
| Project/Area Number |
26330198
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Perceptual information processing
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| Research Institution | Nagasaki University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 肺音 / 副雑音 / 心音 / 統計的手法 / 肺疾患者 |
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| Outline of Final Research Achievements |
Auscultation of lung sounds using a stethoscope is one of the most popular and cost-effective medical examination methods for the identification of respiratory illnesses. This auscultation is based on the heuristic that abnormal respiratory sounds are frequently observed in patients with pulmonary emphysema. These abnormal sounds are termed adventitious sounds. However, frequent noise pollution such as heart sounds and the similarity between the spectral features of noises and of some adventitious sounds hindered the achievement of a high detection rate.
In this study, the difference in occurrence frequencies between two types of adventitious sounds for each considered auscultation point was considered. Furthermore, we devised a robust detection method for lung sounds contaminated with heart sounds. The key characteristic of the proposed method included the use of the validity score representing the misrecognition of heart sounds as adventitious sounds.
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| Free Research Field |
生体医工学
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