Imaging a living brain through the skull with ultrasound and a cloud of microbubbles (alephneuro.com)
The technique injects sparse, FDA-approved sulfur-hexafluoride microbubbles and uses their isolated blur to localize each one far below the diffraction limit — building a vascular map 100x finer by volume than CT, then decoding neural activity from blood flow.
The expert pushback is blunt: a neuroscientist cites papers that even low-dose ultrasound disrupts myelination, and an ultrasound-device engineer asks the question the post never answers — how does it see through bone at all?
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