6 Acquiring Images
Basic User Manual 87
■ Power
Power is used to select the amount of ultrasound acoustic power produced by the probe in
the real time M mode.
To adjust the power:
1. Press the function key to select Power.
2. Rotate the function key to adjust the value.
NOTE:
Expose the patient to the lowest practical transmit power level for the shortest possible
time to achieve a satisfactory diagnosis.
6.4 Acquiring Spectral Doppler Images (Optional)
Spectral Doppler imaging is intended to provide measurement data concerning the velocity,
the direction, and the category of the arterial or vein flow.
6.4.1 PW Mode
Pulsed Wave Doppler (PW) is a Doppler mode that measures velocity in a PW sample
volume and displays that information in a spectral trace with audio output. PW includes
conventional PW and High Pulse Repetition Frequency (HPRF). PW Doppler can be
combined with the B mode for rapidly selecting the anatomical site for PW Doppler
examination. The site where PW Doppler data is derived appears graphically on the B-Mode
image.
Perform the following steps to acquire PW-mode images.
1. Optimize a B-mode image.
2. Press the PW key on the control panel to enter the inactivated B+PW mode 1.
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