| Age | Type of flow/menstrual phase | Arterial waveform pattern |
| pre-pubertal | low diastolic flow | low diastolic flow |
| post-pubertal* | follicular (0-7 days) | low to absent diastolic flow |
| follicular/luteal (11-17 days) | increasing diastolic flow | |
| late luteal | decreasing diastolic flow |
*flow detectable in 90% of adolescents
*arterial flow can be detected occasionally in twisted adnexa1. Siegel MJ. Pediatric Sonography 2nd Edition. Raven Press, New York 1995, p 440-441, 458.