Paper abstract bibtex

OBJECTIVES To evaluate the accuracy of three-dimensional (3-D) ultrasound (US) follicular volume measurements. DESIGN Prospective clinical study. SETTING A tertiary referral center for assisted reproduction. PATIENTS Twenty-five patients undergoing ovarian stimulation for IVF-ET using the long protocol of GnRH agonist. INTERVENTION Transvaginal two-dimensional (2-D) and 3-D ovarian scan performed immediately before US-directed follicle aspiration. MAIN OUTCOME MEASURES The volume of follicular fluid aspirated was compared with the corresponding volume of the follicle measured by 3-D US and with the conventional 2-D US volume measurement calculated using the formula pi/6 (D1 x D2 x D3). Limits of agreement and 95% confidence intervals were calculated and systematic bias between the methods was analyzed. RESULTS The limits of agreement between the volume of follicular aspirate and follicular volume determined by US were +0.96 to -0.43 mL for 3-D measurements and +3.47 to -2.42 mL for 2-D measurements. CONCLUSIONS The true volume of ovarian follicles, within the clinically useful range for IVF-ET cycles, is measured more accurately by a 3-D US system than by 2-D US techniques.

@article{kyei-mensah_transvaginal_1996, title = {Transvaginal three-dimensional ultrasound: accuracy of follicular volume measurements.}, volume = {65}, issn = {0015-0282}, url = {http://www.ncbi.nlm.nih.gov/pubmed/8566265}, abstract = {OBJECTIVES To evaluate the accuracy of three-dimensional (3-D) ultrasound (US) follicular volume measurements. DESIGN Prospective clinical study. SETTING A tertiary referral center for assisted reproduction. PATIENTS Twenty-five patients undergoing ovarian stimulation for IVF-ET using the long protocol of GnRH agonist. INTERVENTION Transvaginal two-dimensional (2-D) and 3-D ovarian scan performed immediately before US-directed follicle aspiration. MAIN OUTCOME MEASURES The volume of follicular fluid aspirated was compared with the corresponding volume of the follicle measured by 3-D US and with the conventional 2-D US volume measurement calculated using the formula pi/6 (D1 x D2 x D3). Limits of agreement and 95\% confidence intervals were calculated and systematic bias between the methods was analyzed. RESULTS The limits of agreement between the volume of follicular aspirate and follicular volume determined by US were +0.96 to -0.43 mL for 3-D measurements and +3.47 to -2.42 mL for 2-D measurements. CONCLUSIONS The true volume of ovarian follicles, within the clinically useful range for IVF-ET cycles, is measured more accurately by a 3-D US system than by 2-D US techniques.}, number = {2}, urldate = {2019-09-11}, journal = {Fertility and sterility}, author = {Kyei-Mensah, A and Zaidi, J and Pittrof, R and Shaker, A and Campbell, S and Tan, S L}, month = feb, year = {1996}, pmid = {8566265}, pages = {371--6}, }

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