TRANS SKULL TRANSMISSION OF AN INTENSE FOCUSED ULTRASONIC BEAM
TRANS SKULL TRANSMISSION OF AN INTENSE FOCUSED ULTRASONIC BEAM
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DOI：
10.1016/0301-5629(77)90069-2
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发表时间：
1977-01-01
影响因子：
2.9
通讯作者：
FRY F J
中科院分区：
文献类型：
--
作者：
FRY F J
在透明石块中，采用了一种强聚焦超声光束的透射模式来产生局灶性热损伤。这一结果是用1兆赫的波束通过切除的成人头骨部分传输而得到的，低强度测量表明，在该频率下声压衰减为13分贝。基本的焦点光束尺寸和声波的时间相干性在通过这个特殊的头骨后被保留在这个频率上。其他研究表明，成年人头骨在500 kHz频率下的衰减值不应该高于这个头骨在1 MHz频率下的衰减值。
An intense focused ultrasonic beam was used in the transkull transmission mode to produce focal thermal lesions in a lucite block. This result was accomplished with a 1 MHz beam transmitted through an excised adult human skull section, which had been shown by low intensity measurements to have 13 dB attenuation of sound pressure at this frequency. The essential focal beam dimensions and temporal coherence of the sound wave were preserved at this frequency after transmission through this particular skull. Other studies indicate that no adult human skull should have a higher attenuation value at a frequency of 500 kHz than this skull shows at 1 MHz.