| Presentation | 2014-09-12 Classification of stenosis signals in shunt murmurs using nonsteady oscillation model Masakazu KIRYU, Hatsuhiro KATO, Yutaka SUZUKI, Mizuya FUKASAWA, Osamu SAKATA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Many of hemodialysis patients undergo a plastic surgery of forming a shunt of blood vessels in their forearm. To detect the stenosis occurred in shunted vessels , diagnostic systems have been developed using vascular sounds. The vascular sounds from shunted vessels are termed as shunt murmurs, which is a non-steady signal synchronizing with the heart beats and includes the information about the stenosis level of vessels. In this study we propose a new method to extract signal features using non-steady oscillation model (ns-OM); This model expresses transient variations of a non-steady signal by using complex amplitudes and oscillation constants of monotonously changing oscillations. Features of shunt murmurs were extracted by ns-OM and were compared with those obtained by the maximum entropy method (MEM). The ns-OM serves for extracting new adding feature and enables us to classify stenosis signals in details which were never possible with MEM. A prospect of improving the stenosis diagnosis was also obtained. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | hemodialysis / shunt / non-steady oscillation model / stenosis diagosis |
| Paper # | BioX2014-11,MBE2014-34 |
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| Conference Information | |
| Committee | BioX |
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| Conference Date | 2014/9/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Biometrics (BioX) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Classification of stenosis signals in shunt murmurs using nonsteady oscillation model |
| Sub Title (in English) | |
| Keyword(1) | hemodialysis |
| Keyword(2) | shunt |
| Keyword(3) | non-steady oscillation model |
| Keyword(4) | stenosis diagosis |
| 1st Author's Name | Masakazu KIRYU |
| 1st Author's Affiliation | Graduate School of Medicine and Engineering General Education Department, University of Yamanashi() |
| 2nd Author's Name | Hatsuhiro KATO |
| 2nd Author's Affiliation | Graduate School of Medicine and Engineering General Education Department, University of Yamanashi |
| 3rd Author's Name | Yutaka SUZUKI |
| 3rd Author's Affiliation | Center for Life Science Research, University of Yamanashi |
| 4th Author's Name | Mizuya FUKASAWA |
| 4th Author's Affiliation | Graduate School of Medicine and Engineering General Education Department, University of Yamanashi |
| 5th Author's Name | Osamu SAKATA |
| 5th Author's Affiliation | Graduate School of Medicine and Engineering General Education Department, University of Yamanashi |
| Date | 2014-09-12 |
| Paper # | BioX2014-11,MBE2014-34 |
| Volume (vol) | vol.114 |
| Number (no) | 212 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |