Intraoperative A-Mode Echoencephalography in Neurosurgery

  • Victor A. Fasano


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.


High Frequency Range Brain Stem Tumor Surgical Application High Frequency Ultrasound Audible Sound 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag/Wien 1986

Authors and Affiliations

  • Victor A. Fasano
    • 1
  1. 1.Institute of NeurosurgeryUniversity of TurinItaly

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