FOCUS SPLITTING ASSOCIATED WITH PROPAGATION OF FOCUSED ULTRASOUND THROUGH THE RIB CAGE.
FOCUS SPLITTING ASSOCIATED WITH PROPAGATION OF FOCUSED ULTRASOUND THROUGH THE RIB CAGE.
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焦点分离与聚焦超声波通过肋骨的传播相关。
DOI：
10.1134/s106377101005012x
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发表时间：
2010-09
影响因子：
0.8
通讯作者：
Gavrilov LR
中科院分区：
文献类型：
--
作者：
Khokhlova VA;Bobkova SM;Gavrilov LR
从理论上研究了聚焦超声通过胸腔传播后焦点分裂的影响。研究表明，这种效应的机制是由来自两个或多个空间分离源（如肋间空间）的波的干涉引起的。根据换能器参数，以及肋架的尺寸和肋架相对于散热器的位置，获得了分裂参数的分析估计，即焦点的数量、振幅、直径和它们之间的距离。考虑了肋板与散热器相对位置的各种构型；它显示了其中哪些是最有效的实际外科手术。
The effect of focus splitting after propagation of focused ultrasound through a rib cage is investigated theoretically. It is shown that the mechanism of this effect is caused by the interference of waves from two or more spatially separated sources, such as intercostal spaces. Analytical estimates of the parameters of splitting are obtained, i.e., the number of foci, their amplitudes, diameter, and the distance between them, depending on the transducer parameters, as well as the dimensions of the rib cage and position of ribs relative to the radiator. Various configurations of the relative positioning of ribs and radiator are considered; it is shown which of them are the most effective for real surgical operations.