| Presentation | 2012-07-27 Nonlinear Wave Propagation on Cardiac Tissue [II] : Detection of BN Hole Creation due to Lamb Wave Schock Yoshifumi Harada, Noriaki Inoue, Takashi Okada, Akimitsu Harada, Yoshihiro Yoshikawa, Naoaki Bekki, Hiroshi KANAI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this presentation, we would like to show you the results of the mechanism of the spatiotemporal dynamics of nonlinear waves interactions in which findings of pulsive waves are spontaneously excited by aortic-valve colosre(AVC) at end-systole by using the novel technique for ultrasonic measurement of myocardial motion. The vibrations were measured almost simultaneously at about 10,000 points set in the, heart-wall at a high temporal resolution. We have already found, for the first time, that quantitative analysis of complex spontaneous pulse waves mentioned above requires the development of new tools for identifying and tracking the most important features of activation, such as defect dynamics in heart wall by using phase gradient vector mapping method. We have applied the vector field phase gradient mapping method(VFPGM) by using this novel method to healthy human subject and we obtain the following results: 1) The spatial distribution with regard to the wave form or the instantaneous phase of specific frequency component is shown at every 1.8 ms and then we analyze all of this data by using our PGMM. 2) We demonstrate that dynamics of the singular points on a vector field of cardiac phase measured by the phase tracking method in ultrasonic measurement were successfully applied by the Bekki-Nozaki hole solution of the CGLE since a phase defect on vector filed generates the hole dynamics. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | CGLE(Complex Ginzburg Landau Equation) / Chaos / Fractal / PHS(Propagating Hole Solution) / vector field phase gradient mapping method(VFPGM) |
| Paper # | US2012-27 |
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| Committee | US |
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| Conference Date | 2012/7/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Nonlinear Wave Propagation on Cardiac Tissue [II] : Detection of BN Hole Creation due to Lamb Wave Schock |
| Sub Title (in English) | |
| Keyword(1) | CGLE(Complex Ginzburg Landau Equation) |
| Keyword(2) | Chaos |
| Keyword(3) | Fractal |
| Keyword(4) | PHS(Propagating Hole Solution) |
| Keyword(5) | vector field phase gradient mapping method(VFPGM) |
| 1st Author's Name | Yoshifumi Harada |
| 1st Author's Affiliation | Fukui University() |
| 2nd Author's Name | Noriaki Inoue |
| 2nd Author's Affiliation | R&D Division, Hitatchi-Aloka Medical |
| 3rd Author's Name | Takashi Okada |
| 3rd Author's Affiliation | R&D Division, Hitatchi-Aloka Medical |
| 4th Author's Name | Akimitsu Harada |
| 4th Author's Affiliation | R&D Division, Hitatchi-Aloka Medical |
| 5th Author's Name | Yoshihiro Yoshikawa |
| 5th Author's Affiliation | R&D Division, Hitatchi-Aloka Medical |
| 6th Author's Name | Naoaki Bekki |
| 6th Author's Affiliation | Nihon University |
| 7th Author's Name | Hiroshi KANAI |
| 7th Author's Affiliation | Graduate School of Engineering, Tohoku University |
| Date | 2012-07-27 |
| Paper # | US2012-27 |
| Volume (vol) | vol.112 |
| Number (no) | 146 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |