Ultrasound Doppler Invert Adjustment

Ultrasound Doppler Invert Adjustment:    ­Reversing the direction of the Doppler Display.

 ©Walter Rasmussen, R.D.C.S.

                                                           invert button

The Spectral Doppler and color Doppler ultrasound Doppler invert button reverses the direction of the velocities above and below the baseline so that blood moving away from the transducer is displayed above the baseline and blood moving toward the transducer is displayed below the baseline.  On many ultrasound machines, it is very easy to accidentally invert the Spectral Doppler recording and the sonographer should be aware of its correct positioning at all times.

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