[The transcranial Doppler ultrasound upright posture test for clinical evaluation of cerebral autoregulation].


Description of a TCD test designed for the clinical investigation of cerebral autoregulation. The Doppler shift frequency of the middle cerebral artery is recorded using of a transducer fixed to the patient's head by an elastic ribbon and a ball joint type probe-holder, and on-line digitally analysed to calculate the TCD flow index (signal power times… (More)


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