title: Change in retrobulbar circulation during menstrual cycle assessed by Doppler ultrasound.
abstract: Our purpose was to study the hemodynamic changes in the ophthalmic, central retinal and posterior ciliary arteries during the normal menstrual cycle and to relate the vascular changes to menstrual cycle. A total of 23 healthy women underwent serial color Doppler ultrasonography at least six times during a normal menstrual cycle, twice each in follicular, ovulatory and luteal phases. Pulsatility and resistance index and peak systolic velocity of the each arteries were assessed with color Doppler imaging. There was no statistical difference in any of the parameters during the menstrual cycle. This was supposed to be because generalized hormonal effects on heart rate, blood pressure, blood volume, cardiac output and on the diameter of the vessel cancel each other and this effect maintains the same ocular blood flow and perfusion during the menstrual cycle.
authors.affiliation: Department of Radiology, Kirikkale University, School of Medicine, Süleyman Demirel Hospital, Kirikkale, Turkey. mykaradeniz@hotmail.com
authors.forename: Mirace Yasemin
authors.initials: MY
authors.lastname: Karadeniz
authors.forename: Aykan
authors.initials: A
authors.lastname: Yucel
authors.forename: Simay
authors.initials: S
authors.lastname: Altan Kara
authors.forename: Volkan
authors.initials: V
authors.lastname: Noyan
authors.forename: Deniz
authors.initials: D
authors.lastname: Altinok
authors.forename: Ahmet
authors.initials: A
authors.lastname: Ergin
authors.forename: Merih
authors.initials: M
authors.lastname: Bayram
authors.forename: Sefik
authors.initials: S
authors.lastname: Güney
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D019842:Ciliary Arteries / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008597:Menstrual Cycle / Q000502:physiology*; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging; D009915:Orbit / Q000098:blood supply* / Q000000981:diagnostic imaging*; D012016:Reference Values; D012161:Retinal Artery / Q000000981:diagnostic imaging; D018608:Ultrasonography, Doppler