With a wider vessel, the Doppler shift is broadened since there will now be {TAIL ~ blood cells} travelling at different velocities across {HEAD ~ the diameter} of the vessel 
With a wider vessel , the Doppler shift is broadened since there will now be { TAIL ~ blood cells } travelling at different velocities across { HEAD ~ the diameter } of the vessel
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH