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題名 | 超音波合成孔徑影像之數值模擬與量測=Ultrasonic Synthetic Aperture Imaging Numerical Simulation and Measurement |
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作者 | 江惠華; 何恭誠; 李柏磊; | 書刊名 | 中華醫學工程學刊 |
卷期 | 17:3 1997.09[民86.09] |
頁次 | 頁207-212 |
分類號 | 410.1644 |
關鍵詞 | 超音波; 合成孔徑; 影像; 數值模擬; Ultrasound; Synthetic aperture; Image; Numerical simulation; |
語文 | 中文(Chinese) |
中文摘要 | 超音波合成孔徑影像是以合成孔徑雷達的觀念,來處理超音波掃描的回波訊號, 具有提高超音波影像的橫向解析度的能力。合成孔徑影像成像的過程是利用發射寬角波束的 小型探頭,進行線性掃描,並對回波訊號進行傅利葉轉換、相位修正以及反傅利葉轉換等, 以得到合成孔徑的影像。本研究對超音波合成孔徑影像作數值模擬並對水底圓柱體進行量測 ,證明超音波合成孔徑影像處理的方式,能提供極佳解析力且確實可行。 |
英文摘要 | The concept of Ultrasonic Synthetic Aperture Imaging (USAI) is coming from Synthetic aperture Radar and has the advantage of improving the lateral resolution of the ultrasound image. The process of USAI uses a wide beam transducer to conduct linear scaning, and uses numerical computation techniques to perform the image reconstruction steps of Fourier transform, phase compensation, and inverse Fourier transform. In our research, we have conducted numerical simulation on various subjects using the USAI reconstruction algorithm and also conducted the USAI measurement on a phantom system. this study shows that the implementation of the USAI is successful, it improves the lateral resolution of the ultrasound image. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。