1. DAVID MICHAELI MD, PhD, Neurosurgeon, RABIN MEDICAL CENTER, ISRAEL
    David Michaeli David Michaeli Israel says:
    December 30, 2013 at 12:39 PM

    Gold Standard for ICP measurement is Pressure, measured by Ventricular catheter,
    Inserted via bur hole .

    Micro-gravity causing:
    Correlative, non linear changes of   between ICP and venous blood velocity, 2 depth Trans Cranial Doppler, Optic Nerve Sheet Diameter (ONSD) Measurement, magnetic resonance imaging; near-infrared spectroscopy, all acoustic methods, which measures brain activity through blood movement; and pulse phase-lock loop, which measures skull movement associated with pulses in intracranial pressure are not correctly reflects dynamical  changes of real ICP value .

    One of the most accurate devices and methods for Non Invasive(NI)  ICP measurement is TRA (Tissue Resonance Analysis ):
    http://www.ncbi.nlm.nih.gov/pubmed/12066918

    http://www.google.com/patents/US6702743

    Brain's tissue resonance ratio to heart's resonance is not changing in micro gravity,
    and ICP measurement with these method, much accurate than other above mentioned methods

    Reply
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