| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
|
|---|
| 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.
|
