Doppler shift

shift (shift) a change or deviation.

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chloride shift  the exchange of chloride (Cl−) and bicarbonate (HCO3−) between plasma and the erythrocytes occurring whenever HCO3− is generated or decomposed within the erythrocytes.

Doppler shift  the magnitude of frequency change due to the Doppler effect.

shift to the left  an increase in the percentage of neutrophils having only one or a few lobes.

shift to the right  an increase in the percentage of multilobed neutrophils.

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Doppler shift.

See Doppler effect.

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Doppler

an Austrian physicist and mathematician.

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duplex Doppler imaging

see doppler ultrasound.

Doppler effect

the relationship of the apparent frequency of waves, as of sound, light and radio waves, to the relative motion of the source of the waves and the observer, the frequency increasing as the two approach each other and decreasing as they move apart.

The Doppler effect can be experienced when a train whistle or automobile horn produces a continuous sound as it approaches and passes a listener. The pitch of the sound suddenly falls as the source passes the listener.

Doppler shift

the change in frequency that occurs when high frequency sound waves are reflected from a moving surface; the basis for doppler ultrasound.