| Project/Area Number |
20300181
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Medical systems
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| Research Institution | Shonan Institute of Technology |
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Principal Investigator |
AKIYAMA Iwaki Shonan Institute of Technology, 工学部, 教授 (80192912)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Yoshiaki 同志社大学, 生命医科学部, 教授 (60148377)
NAKAMURA Kentaro 東京工業大学, 精密工学研究所, 教授 (20242315)
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| Co-Investigator(Renkei-kenkyūsha) |
TANIGUCHI Nobuyuki 自治医科大学, 医学部, 教授 (10245053)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000)
Fiscal Year 2010: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2009: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2008: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
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| Keywords | 血流計測 / 造影剤 / 非線形振動 / スペックル / 圧電振動子 / 広帯域 / クロスビーム方式 / 多共振特性 / クロスピーム方式 / 超音波診断装置 / 多共振型圧電振動子 / 和音 / 1-3コンポジット材 / ドプラ周波数 / スペックル低減 / 低速血流 / マイクロバブル / コンポジット材 / 多共振型振動子 / 和音成分 / ドプラ計測 |
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| Research Abstract |
This study developed two types of multiple frequencies ultrasonic imaging for alleviation of ultrasound exposure risk of biological tissues. One is "crossed two-frequency beams contrast echo method", which measures distribution of low speed blood flow at the crossed area of two beams with different frequencies. The other is "multiple-frequency echo method", which forms multiple-frequency images using the broadband pulsed wave of multiple peak frequencies.
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