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- Jarvela, IY, et al.
(författare)
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Characterization of normal and polycystic ovaries using three-dimensional power Doppler ultrasonography
- 2002
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Ingår i: Journal of Assisted Reproduction and Genetics. - 1058-0468. ; 19:12, s. 582-590
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: To evaluate the characteristics of polycystic compared to normal ovaries using three-dimensional (3-D) power Doppler ultrasonography. Methods: We recruited 42 volunteers, all of whom were commencing IVF treatment. Each patient was examined in the cycle preceeding the start of drug therapy during the late follicular phase. IF eight or more subcapsular follicles of 2-8 mm in diameter in one two-dimensional (2-D) plane were detected in either of the ovaries, the patient was categorized as having polycystic ovaries (PCO); otherwise the ovaries were considered normal. The parameters examined were volume of the ovary, vascularization index (VI), flow index (FI), vascularization flow index (VFI), and mean greyness (MG). IN addition, the ovary was arbitrarily divided into cortex and stroma, and thereafter volume, VI, FI, VFI, and MG were calculated for these two regions. Results: Twenty-eight women had normal ovaries and 14 had PCO. The comparison between normal and PCO showed that as a group the PCO were larger, without any differences in VI, FI, VFI, or MG. In patients with PCO, the right ovary was larger than the left one. In patients with normal ovaries, FI was higher on the left side. Division into cortex and stroma revealed that there were no differences in cortical or stroma VI, FI, VFI, or MG between normal and PCO on either side. Conclusions: The ovaries defined as polycystic were larger than normal ovaries, but there was no difference in the echogenicity of the stroma between polycystic and normal ovaries. We were also unable to demonstrate that the polycystic ovarian stroma was more vascularized than the stroma in the normal ovaries.
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| 2. |
- Jarvela, IY, et al.
(författare)
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Quantification of ovarian power Doppler signal with three-dimensional ultrasonography to predict response during in vitro fertilization
- 2003
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Ingår i: Obstetrics and Gynecology. - 1873-233X. ; 102:4, s. 816-822
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To evaluate whether power Doppler predicts ovarian response to gonadotrophin stimulation during in vitro fertilization (IVF). METHODS: Forty-five women were divided into low-reserve (n = 12) and normal-reserve (n = 33) ovarian groups, according to antral follicle count. Transvaginal three-dimensional power Doppler ultrasonographic examinations were performed after pituitary downregulation and after gonadotrophin stimulation. The antral follicle count, ovarian volume, vascularization index, flow index, vascularization flow index, and mean gray value were measured and related to the number of oocytes retrieved and the pregnancy rate. RESULTS: The number of oocytes retrieved correlated with the antral follicle count (R = .4581, P = .004) and ovarian volume (R = .389, P < .016) but not with vascularization index, flow index, vascularization flow index, or mean gray value after pituitary suppression. There was an increase in vascularization index (P < .017), flow index (P < .001), and vascularization flow index (P < .007) during gonadotrophin stimulation in the normal-ovary group but not in the low-ovarian-reserve group. CONCLUSION: According to our results, quantification of power Doppler signal in the ovaries after pituitary suppression does not provide any additional information to predict the subsequent response to gonadotrophin stimulation during IVY The increase in ovarian power Doppler signal during gonadotrophin stimulation is related to the antral follicle count observed after pituitary suppression.
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