MULTIPLE-FOCUS ULTRASOUND PHASED-ARRAY PATTERN SYNTHESIS - OPTIMAL DRIVING-SIGNAL DISTRIBUTIONS FOR HYPERTHERMIA
MULTIPLE-FOCUS ULTRASOUND PHASED-ARRAY PATTERN SYNTHESIS - OPTIMAL DRIVING-SIGNAL DISTRIBUTIONS FOR HYPERTHERMIA
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DOI：
10.1109/58.31798
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发表时间：
1989-09-01
影响因子：
3.6
通讯作者：
EBBINI, ES
中科院分区：
文献类型：
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作者：
EBBINI, ES
一种用于计算阵列元件振幅和相位分布的方法，用于使用超声相控阵列直接合成多焦点场图案，被示出为能够在治疗体积中的一组控制点处产生期望的场水平。可以选择这些控制点中的任何一个处的复合压力以在该点处产生期望的功率沉积，包括降低场水平以避免潜在的热点，从而为热疗治疗规划提供强大的工具。该方法还允许对复激励矢量进行加权，以减小驱动信号的动态范围，而不干扰控制点处的相对场水平，从而允许从阵列到治疗体积的接近最大功率传输。<>
A method for computing array element amplitude and phase distributions for direct synthesis of multiple-focus field patterns using ultrasonic phased arrays is shown to be capable of producing desired field levels at a set of control points in the treatment volume. The complex pressure at any of these control points can be chosen to produce the desired power deposition at the point, including reducing the field level to avoid potential hot spots, thus providing a powerful tool for hyperthermia treatment planning. The method also allows the complex excitation vector to be weighted to reduce the dynamic range of the driving signals without disturbing the relative field levels at the control points, allowing near maximum power transfer from the array into the treatment volume.<>