| Project/Area Number |
21592582
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Surgical dentistry
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| Research Institution | Showa University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
UYAMA Risa 昭和大学, 歯学部, 講師 (40307054)
AYANO Rika 昭和大学, 歯学部, 助教 (50297016)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 嚥下障害 / 嚥下造影検査 / 嚥下内視鏡検査 / 頸部聴診法 / 嚥下時産生音 / 頸部聴診 / 嚥下音 / 呼吸音 |
|---|
| Research Abstract |
In this study, we developed a swallowing sound detection system using a microphone, and then, we developed a sound-image synchronous analysis system. The synchronous analysis system has a sound pressure normalization program, and FFT analysis, cepstrum analysis, and sound spectrogram analysis can be conducted.
During video fluorographic study or endoscopic study, swallowing sounds were detected with the swallowing sound detection system, and recorded simultaneously with the images into the DV recorder. Using the sound-image synchronous analysis system, acoustic signals of swallowing sounds and swallow physiology were analyzed, and acoustic characteristics of dysphagia were investigated. Compare to the normal group, patients with retention, petetration or aspiration had tendency to show high sound pressure level in frequency under 250 Hz of the post-swallow expiratory sounds.
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