| Project/Area Number |
23650299
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Medical systems
|
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
|
| Project Status |
Completed (Fiscal Year 2012)
|
| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 脈波 / 血流 / 流線 / 血管動態 / 超音波 |
|---|
| Research Abstract |
In the present study, the regional pulse wave propagation and reflection of pulse wave from the cerebrovascular system were analyzed using a custom system which realizes ultrasonic imaging at a frame rate of a few thousands Hz. We have developed a method for measurement of regional propagation velocities of forward and reflected waves individually in the carotid artery, the forward and reflected waves were identified successfully. Furthermore, for detailed analysis of blood flow dynamics, ultrasonic echoes from blood particles were visualized successfully, and the stream lines were also visualized by spatial frequency analysis of ultrasonic echoes from blood particles.
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