2014 Fiscal Year Final Research Report
Deveopment of ltrasonic field control using the Fresnel zone plate system
| Project/Area Number |
24500537
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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 |
Medical systems
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| Research Institution | Yamagata University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | HIFU / 超音波 / リニアアレイ / フレネルレンズ |
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| Outline of Final Research Achievements |
Since the ultrasonic probes used in present-day HIFU treatment systems have a fixed focal length, it is necessary to perform a mechanical operation to focus on the affected area. The equipment cost is high with the use of such transducers because this method requires a large number of high-voltage signals. In contrast, with ultrasonic field control using the Fresnel zone plate system proposed in this study, the focal point can be freely controlled even with only one electrical signal. In this study, we confirmed that the angular and depth directions of the focal point can be varied by altering the arrangement pattern of the Fresnel zone plate using a computer simulation.
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| Free Research Field |
超音波工学
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