FIELD: medicine.
SUBSTANCE: method involves exposing tissue volume under study to produced ultrasonic wave and receiving the response signal. Carrier signal frequency is set to zero, dividing the signal into direct and return blood circulation parts. The signal is amplified, filtered and sent as input to computer provided with corresponding software in standard multimedia configuration for visualizing, processing, saving and archiving the obtained data. Amplification and filtration parameters are independently selected for channels to reach maximum pass band correspondence to diagnostically significant spectral components of the received signal.
EFFECT: improved diagnosis-setting features mainly when studying cranial blood vessels blood circulation characteristics; high noise immunity and measurement accuracy.
2 dwg
