The neurosurgical application of the intraoperative Doppler examination method requires a Doppler system which can record manipulated vessels of less than 1 millimeter in diameter. The system must also enable examinations to be carried out under visual control, with direct contact between the probe and the vessel and in the narrow space at the base of the brain. It must be able to record discretely vessels which are closely adjacent.
KeywordsAngle Error Transmitted Frequency Pulse Technique Doppler System Doppler Device
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