title: Three-dimensional versus two-dimensional ultrasound measurement of follicular volume: are they comparable?
abstract: To compare the accuracy of three-dimensional (3-D) versus two-dimensional (2-D) ultrasonography (U/S) in the measurement of follicular volume and identification of cumulus oophorus complex, thirty women were selected. Women who undergoing ovarian stimulation for in-vitro fertilization and embryo transfer (IVF-ET) using the long protocol of GnRH agonist were scanned by 2-D and 3-D ultrasonography before follicular aspiration. The volume of aspirated follicular fluid was compared with corresponding volume measured by 3-D and 2-D ultrasonography. It was found that, the high accuracy of 3-D U/S measurement of follicular volume is demonstrated clearly by limits of agreement which were within 1 ml of the true volume. While, the 2-D U/S produced limits of agreement those were up to 3.5 ml above or 2.5 ml below the true volume. Also, 3-D U/S could identify cumulus oophorus complex in 86% of cases. From this study, it was concluded that 3-D U/S system is more accurate than 2-D U/S in the measurement of the true follicular volume. Also, 3-D U/S is superior to 2-D U/S for identification of cumulus oophorus complex.
authors.affiliation: Department of Obstetrics and Gynaecology, Al-Azhar University, Cairo, Egypt.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Amer
authors.forename: Mohamad Eid
authors.initials: ME
authors.lastname: Hammadeh
authors.forename: Mohamed
authors.initials: M
authors.lastname: Kolkailah
authors.forename: Abdel-Al
authors.initials: AA
authors.lastname: Ghandour
mesh_terms: D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D007987:Gonadotropin-Releasing Hormone / Q000494:pharmacology; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods / Q000592:standards; D006080:Ovarian Follicle / Q000000981:diagnostic imaging* / Q000187:drug effects / Q000473:pathology; D010062:Ovulation Induction; D011237:Predictive Value of Tests; D014463:Ultrasonography / Q000379:methods / Q000592:standards
chemical_list: D007987:Gonadotropin-Releasing Hormone