Optical Phase Contrast Mapping of Highly Focused Ultrasonic Fields
スポンサーリンク
概要
- 論文の詳細を見る
The most common method of measuring an ultrasonic pressure field is a hydrophone scan. However, this method has a long scanning time and disturbs the acoustic field. In this study, we used an optical phase contrast method for the measurement. Because this method uses light, fast and noninvasive measurement can be performed. The projections of an ultrasonic pressure field were obtained with a charge-coupled device (CCD) camera, and the three-dimensional (3D) acoustic pressure field was reconstructed using a computed tomography (CT) algorithm from these projections. The result was compared with that of hydrophone measurement and demonstrated the successful reconstruction of a focal ultrasonic pressure field.
- 2013-07-25
著者
-
Umemura Shin-ichiro
Graduate School of Bioengineering, Tohoku University, 6-6 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
-
Yoshizawa Shin
Graduate School of Engineering, Tohoku University, Sendai 980-5879, Japan
-
Miyasaka Ryo
Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
-
Harigane Soichiro
Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
関連論文
- Analysis of High-Intensity Focused Ultrasound Source Using Time Reversal: Effect of Lamb-Like Waves
- Ultrasonic coagulation of large tissue region by generating multiple cavitation clouds in direction perpendicular to ultrasound propagation (Special issue: Ultrasonic electronics)
- Phase Change Nanodroplets and Microbubbles Generated from Them as Sources of Chemically Active Cavitation
- Quantitative Measurement of Focused Ultrasound Pressure Field Using Subtraction Shadowgraph
- Breathing-Mode Ceramic Element for Therapeutic Array Transducer
- Staircase-Voltage Metal–Oxide–Semiconductor Field-Effect Transistor Driver Circuit for Therapeutic Ultrasound
- Sustaining Microbubbles Derived from Phase Change Nanodroplet by Low-Amplitude Ultrasound Exposure
- Acoustic Response of Microbubbles Derived from Phase-Change Nanodroplet
- Therapeutic Array Transducer Element Using Coresonance between Hemispherical Piezoceramic Shell and Water Sphere: Effect of Load Masses of Support and Electric Contact
- Enhancement of Localized Heating by Ultrasonically Induced Cavitation in High Intensity Focused Ultrasound Treatment
- Coagulation of Large Regions by Creating Multiple Cavitation Clouds for High Intensity Focused Ultrasound Treatment
- Efficient Generation of Cavitation Bubbles in Gel Phantom by Ultrasound Exposure with Negative-Followed by Positive-Peak-Pressure-Emphasized Waves
- Large Volume Coagulation Utilizing Multiple Cavitation Clouds Generated by Array Transducer Driven by 32 Channel Drive Circuits
- Optical Phase Contrast Mapping of Highly Focused Ultrasonic Fields
- Analysis of Temperature Rise Induced by High-Intensity Focused Ultrasound in Tissue-Mimicking Gel Considering Cavitation Bubbles
- Enhancement of Focused Ultrasound Treatment by Acoustically Generated Microbubbles
- Analysis of Temperature Rise Induced by High-Intensity Focused Ultrasound in Tissue-Mimicking Gel Considering Cavitation Bubbles