Diagnostic Ultrasound - Abdomen and Pelvis

Ovaries
CYCLIC CHANGES OF INTRAOVARIAN ARTERY
Anatomy: Pelvis
Peak systole
Early diastolic notch
End diastole
Immediate postovulatory ruptured
follicle
Corpus luteum
(Top) Transverse spectral Doppler TA ultrasound of the ovarian artery is shown. The ovarian artery blood flow shows a high-resistance
flow pattern with low end-diastolic velocity and an early diastolic notch. This notch indicates initial resistance to forward flow through
the ovarian parenchyma. The flow resistance is maximum during the first 8 days of the cycle. (Middle) Spectral Doppler TV ultrasound
of the intraovarian artery in early luteal phase is shown. The ovarian artery has a low-resistance flow, which reaches the lowest level in
early luteal phase. At this time, the intraovarian vascularity is easily detectable. (Bottom) Spectral Doppler of TA ultrasound of the
intraovarian artery in midluteal phase is shown. The ovarian arterial flow is of medium resistance and the flow resistance will gradually
increase through to the regenerative phase.
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