What is being shown is a pulse-wave Doppler ... of the pulmonary-vein Doppler is caused by atrial relaxation. In this case, S1 occurs not in systole, but instead in late diastole, because the ...

You see a pulse ... wave Doppler through the mitral valve again—this is just at a higher sweep speed—and the time velocity integral (TVI) through the mitral valve during diastole is 53.1 ...

With the conversion of each pulse into adequate circulation, a system is developed. At each systole (beat ... impedance the pressure wave rebounds back to some extent. Doppler analysis can ...

Philips has upgraded its smartphone-controlled hand-held ultrasound system, adding pulse wave Doppler support to help clinicians examine real-time blood flow across a range of diagnostic applications.