_______ instruments are now available for the measurement of blood velocity, volume flow, flow direction, flow profile and to visualize the internal lumen of blood vessel.(a) Transit-time(b) Doppler-shift(c) Square wave(d) Sine waveThe question was posed to me in quiz.This intriguing question originated from Cyber Medicine topic in division Telemedicine Technology of Biomedical Instrumentation

_______ instruments are now available for the measurement of blood vel

1.	_______ instruments are now available for the measurement of blood velocity, volume flow, flow direction, flow profile and to visualize the internal lumen of blood vessel.(a) Transit-time(b) Doppler-shift(c) Square wave(d) Sine waveThe question was posed to me in quiz.This intriguing question originated from Cyber Medicine topic in division Telemedicine Technology of Biomedical Instrumentation
Answer» The correct answer is (B) DOPPLER-shift For explanation: For routine clinical measurements, the transcutaneous Doppler instrument has, by FAR, superseded the transit-time type. Therefore, most of the RECENT efforts have been concentrated on the development of Doppler-shift instruments, which are now available for the MEASUREMENT of blood velocity, volume flow, flow direction, flow profile and to visualize the internal lumen of a blood vessel.

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