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Chapter 7 Diagnosis Modes
PW Spectral Doppler Mode
PW stands for Pulse Wave. This mode displays the blood ow speed at a specic blood vessel location
within a specic time frame. Distance (depth) information can also be obtained by transmitting pulses
over particular time frames.
This mode is useful for measuring low-speed blood ow, such as in the abdomen and peripheral
vessels. The 2D Mode image is also shown, allowing the marking and adjustment of an observation
area within the entire image.
[Figure 7.9 PW Spectral Doppler Mode – Touch Screen]
Entering & Exiting PW Spectral Doppler Mode
Entering PW Spectral Doppler Mode
1. Press the PW button on the control panel to enter PW Spectral Doppler Mode.
2. Congure settings relating to Doppler image acquisition on the touch screen.
3. Press the PW dial-button again to enter PW Spectral Doppler Mode and display the Doppler
image on the screen.
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