| Project/Area Number |
26289123
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Measurement engineering
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| Research Institution | University of Toyama (2015-2016)
Tohoku University (2014) |
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Principal Investigator |
Hasegawa Hideyuki 富山大学, 大学院理工学研究部(工学), 教授 (00344698)
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| Co-Investigator(Kenkyū-buntansha) |
西條 芳文 東北大学, その他の研究科, 教授 (00292277)
金井 浩 東北大学, 工学(系)研究科(研究院), 教授 (10185895)
近藤 祐司 東北大学, 工学(系)研究科(研究院), 教授 (20534431)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2014: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
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| Keywords | 超音波 / 高速イメージング / 高出力プローブ / 計測工学 |
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| Outline of Final Research Achievements |
Functional ultrasound imaging is valuable for diagnosis of the circulatory system. Measurement of the tissue dynamics is necessary for functional ultrasound imaging. We have tried to improve the temporal resolution, which is one of the merits of ultrasonography, for accurate measurement of the tissue dynamics. In the present study, an ultrasonic transducer array, to which high input voltage can be applied, was developed for detection of ultrasonic echoes from very weak scatterers, such as blood cells, by increasing the intensity of emitted ultrasound. Also, a multi-channel system for ultrasonic pulse-echo measurement was developed so that high voltages can be applied to the transducer array. Furthermore, we have developed methods for high-contrast ultrasonic imaging and succeeded to visualize weak echoes from blood cells.
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