Advanced Topics on Three-dimensional Ultrasound in Obstetrics and Gynaecology

Advanced Topics on Three-Dimensional Ultrasound in Obstetrics and Gynecology is a comprehensive and handy guide for sonographers, obstetricians, gynecology and radiology professionals, and all ...
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Assessment of Ovarian Volume, Ovarian Follicle Count and Ovarian Blood Flow in Hyper Androgenic Anovulation

Pp. 321-333 (13)

Maria Lucia dos Santos Lima, Wellington de Paula Martins, Tatiana Nascimbem Bechtejew, Marcela Alencar Coelho Neto and Nicholas Raine-Fenning


The emergence of new ultrasound machines and hence the possibility of a more detailed view from the female reproductive system, has incorporated some changes in the gynecologist routine and in some previously defined concepts for diagnostics. The hyperandrogenic anovulation, also called polycystic ovary syndrome (PCOS), is frequently associated with a large follicle number per ovary (FNPO); which is being used as a diagnostic criterion for more than one decade. In this chapter we will review the need for updating the cut-off value when using FNPO to diagnose hyper androgenic anovulation and the current knowledge about the use of three-dimensional ultrasound (3DUS) machines when assessing ovarian volume, ovarian follicle count and ovarian blood flow.


Ovarian Volume, ovarian follicle count, ovarian blood flow, polycystic ovary syndrome, Three-dimensional ultrasound.


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