Blood rheology measuring apparatus

Details Blood rheology measuring apparatus Blood rheology measuring apparatus

2011-06-14

2011-06-14

Marmor, II, Charles A (Department: 3735)

Surgery

Diagnostic testing

Cardiovascular

C600S454000, C600S453000, C600S483000, C600S485000

Reexamination Certificate

active

07959575

ABSTRACT:
A blood rheology measuring apparatus has a measuring portion for measuring a flow velocity of the blood flowing in a blood vessel of a person in a mode of a Doppler shift signal by transmitting and receiving a wave to and from a surface of the person's skin. An information processing portion calculates an intensity at each of frequency components of the Doppler shift signal, extracts a maximum frequency in a signal at an intensity level equal to or larger than a threshold in the histogram or a maximum frequency when an integrated value from a low frequency component reaches a predetermined rate of a total thereof in the histogram, and provides a temporal change waveform of the extracted frequency. The blood rheology is analyzed based on the maximum frequency in the frequency waveform.

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