How does the frequency and amplitude of something used for this approach compare... | Hacker News

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		jollyllama 8 months ago \| parent \| context \| favorite \| on: Doctors could hack the nervous system with ultraso... How does the frequency and amplitude of something used for this approach compare to that used for routine fetal imaging?

amelius 8 months ago [–]

The difference is that they use a focused beam here.

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