与深度无关的窄波束宽度三维超声成像技术

2002 IEEE Ultrasonics Symposium, 2002. Proceedings. Pub Date : 2002-12-01 DOI:10.1109/ULTSYM.2002.1192597

Z. M. Benenson, A. B. Elizarov, T. Yakovleva, W. O’Brien

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引用次数: 1

摘要

提出了一种产生与深度无关的窄波束宽三维超声图像的技术。高频、宽带宽球形换能器沿二维笛卡尔坐标扫描。接收到的宽带超声脉冲通过对不同时间频率信号的空间频谱进行校正来实现动态聚焦。该算法的主要步骤包括对时间和两个空间笛卡尔坐标的快速正反傅里叶变换。

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Depth-independent narrow beamwidth 3D ultrasonic image formation technique

A technique is proposed that generates a depth-independent and narrow beamwidth 3D ultrasonic image. A high-frequency, wide-bandwidth spherical transducer is scanned in 2D along Cartesian coordinates. The received wideband ultrasonic pulses are dynamically focused by means of correcting the spatial spectrum of signals for various temporal frequencies. The main procedures of the algorithm consist in the direct and inverse fast Fourier transforms by time and by two spatial Cartesian coordinates.

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来源期刊

2002 IEEE Ultrasonics Symposium, 2002. Proceedings.

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