Difference Between Low Resistance & High Resistance Waveforms On Spectral Doppler Ultrasound USG скачать в хорошем качестве

Difference Between Low Resistance & High Resistance Waveforms On Spectral Doppler Ultrasound USG

Difference Between Low Resistance & High Resistance Waveforms On Spectral Doppler Ultrasound USG Low Resistance: Renal Artery & Internal Carotid Artery Rounded Systolic Peak: The systolic peak is less sharp and more rounded compared to high resistance waveforms. Significant flow during diastole Noticeable end-diastolic velocity, reflecting the sustained blood flow through the diastolic phase. High Resistance: Common Femoral Artery Sharp Systolic Peak Reversed Diastolic Flow due to the resistance in the peripheral vascular bed of the lower limbs. Triphasic – a rapid systolic peak followed by a brief reversal of flow and then a smaller forward flow or plateau in diastole. High Resistance: Uterine Artery - Non-Pregnant Sharp, distinct systolic peak followed by a rapid decrease in blood flow velocity Absence of flow during early diastole Low forward flow during the diastolic phase High Resistance Uterine Artery - 1st Trimester Lower resistance than in non-pregnant state but has higher resistance than second and third trimesters Low Resistance Uterine Artery - 2nd Trimester Further lowered resistance Increased diastolic flow Absence of Notching Decreased sharpness of Systolic Peak End-Diastolic Flow Presence