Abstract
Sound is classified by its frequency. The range of audible sound is from 16 to 18,000 cycles per second (cps). Ultrasound spans a frequency of 18,000 cps to 100,000 megacycles per second (one megacycle is one million of cycles per second or one megahertz MHz). In this discussion, ultrasound in the higher frequency ranges only is considered: from 1 to 15 MHz per second.
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© 1986 Springer-Verlag/Wien
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Fasano, V.A. (1986). Intraoperative A-Mode Echoencephalography in Neurosurgery. In: Fasano, V.A. (eds) Advanced Intraoperative Technologies in Neurosurgery. Springer, Vienna. https://doi.org/10.1007/978-3-7091-8810-1_2
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DOI: https://doi.org/10.1007/978-3-7091-8810-1_2
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