What do I do if my PW Doppler signal gets cut-off and I can’t visualize the peak velocity?
This is a common occurrence when imaging the aorta in TAC models; if your signal is getting cut-off the first thing to do is increase your PRF (Pulse repetition frequency), this will change the scale for your signal. You can also move your baseline down. If your PRF is maximized up tp 125kHz and your baseline is lowered and your signal is still getting cut-off then we recommend you switch to a lower frequency transducer. Typically the 250 series work best, as there are physical limitations to the maximum velocity that can be read with higher frequency transducers.