The application of ultrasound elastography in the diagnosis of obese polycystic ovary syndrome
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目的 探讨超声弹性成像（UE）对肥胖型多囊卵巢综合征（PCOS）的诊断价值。 方法 采用回顾性研究的方法，选择宁波市北仑区第二人民医院2019年6月至2022年4月确诊的86例PCOS患者作为研究组，其中体质量指数（BMI）≥25 kg/m2 32例（肥胖亚组），<25 kg/m2 54例（非肥胖亚组），另选择同期体检健康并且年龄、BMI与研究组匹配的40例女性作为健康对照组，均行阴道常规超声及UE检查，比较各组超声参数的差异；绘制受试者工作特征（ROC）曲线评估相关参数对PCOS、肥胖型PCOS的诊断效能。 结果 研究组卵泡个数、卵巢体积大于健康对照组，卵巢间质动脉搏动指数（PI）、阻力指数（RI）小于健康对照组[（17.50 ± 3.23）个比（8.15 ± 2.01）个、（12.97 ± 3.20）ml比（5.36 ± 1.82）ml、0.82 ± 0.14比0.93 ± 0.20、0.52 ± 0.12比0.58 ± 0.10]，差异均有统计学意义（P<0.05）；肥胖亚组卵泡个数、卵巢体积大于非肥胖亚组[（18.98 ± 3.45）个比（16.62 ± 3.17）个、（15.00 ± 3.15）ml比（11.77 ± 2.63）ml]（P<0.05），而肥胖亚组与非肥胖亚组卵巢间质动脉PI、RI比较差异无统计学意义（P>0.05）。研究组弹性模式1型显著高于正常对照组[65.12%（56/86）比10.00%（4/40）]，差异有统计学意义（χ 2 = 17.61，P<0.01）；肥胖亚组与非肥胖亚组弹性模式比较差异无统计学意义（P>0.05）。研究组弹性系数（B/A比值）大于正常对照组（7.86 ± 1.51比4.53 ± 1.10），差异有统计学意义（P<0.05）；并且肥胖亚组B/A比值大于非肥胖亚组和正常对照组（8.76 ± 1.35比7.32 ± 1.34、4.53 ± 1.10），差异有统计学意义（P<0.05）。ROC曲线分析结果表明，B/A比值诊断PCOS的曲线下面积（AUC）为0.962，截断值为5.56时，对应的灵敏度、特异度为93.02%、87.50%；B/A比值诊断肥胖型PCOS的AUC为0.788，截断值为8.35时，对应的灵敏度、特异度为78.12%、85.19%。 结论 UE对PCOS有较大的诊断价值，对肥胖型PCOS有一定的鉴别效能。 Objective To explore the diagnostic value of ultrasound elastography (UE) in patients with obese polycystic ovary syndrome (PCOS). Methods A total of 86 PCOS patients diagnosed in the Second People′s Hospital of Beilun District, Ningbo City from June 2019 to April 2022 were selected as the study group, including 32 patients with body mass inde(BMI) ≥25 kg/m2 (obese group) and 54 patients with BMI < 25 kg/m 2 (non-obese group). Another 40 women with healthy physical examination and matching age and BMI of the study group were selected as the normal control group. All of them underwent routine vaginal ultrasound and UE examination, and the differences of parameters in each group were compared. The receiver operating characteristic (ROC) curve was drawn to evaluate the diagnostic efficacy of relevant parameters for PCOS and obesity PCOS. Results The number of follicles and ovarian volume in the study group were higher than those in the normal control group, and the PI and RI of ovarian interstitial artery were lower than those in the normal control group: (17.50 ± 3.23) unit vs. (8.15 ± 2.01) unit, (12.97 ± 3.20) ml vs. (5.36 ± 1.82) ml, 0.82 ± 0.14 vs. 0.93 ± 0.20, 0.52 ± 0.12 vs. 0.58 ± 0.10, there were statistical differences (P<0.05). The number of follicles and ovarian volume in the obese group were significantly higher than those in the non-obese group: (18.98 ± 3.45) unit vs. (16.62 ± 3.17) unit, (15.00 ± 3.15) ml vs. (11.77 ± 2.63) ml, there were statistical differences (P<0.05) but the PI and RI between the obese group and the non-obese group had no significant differences (P>0.05). In the study group, 56 cases (65.12%) had type 1 elastic pattern, which was significantly higher than 4 cases (10.00%) in the normal control group (χ2 = 17.61, P<0.01). The elastic pattern was no significant difference between the obese group and the non-obese group (P>0.05). The elastic coefficient (B/A ratio) in the study group was higher than in the normal control group:7.86 ± 1.51 vs. 4.53 ± 1.10, there was statistical difference (P<0.05). The B/A ratio in the obese group was higher than that in the non-obese group and the normal control group: 8.76 ± 1.35 vs. 7.32 ± 1.34, 4.53 ± 1.10, there were statistical differences (P<0.05). The ROC curve analysis showed that the area under the curve (AUC) of B/A ratio for the diagnosis of PCOS was 0.962, when the cut-off value was 5.56, the corresponding sensitivity and specificity were 93.02% and 87.50%. The AUC of B/A ratio for the diagnosis of obese PCOS was 0.788, when the cut-off value was 8.35, the corresponding sensitivity and specificity were 78.12% and 85.19%. Conclusions The UE has great diagnostic value for PCOS and certain discrimination performance for obese PCOS.
Objective To explore the diagnostic value of ultrasound elastography (UE) in patients with obese polycystic ovary syndrome (PCOS). Methods A total of 86 PCOS patients diagnosed in the Second People′s Hospital of Beilun District, Ningbo City from June 2019 to April 2022 were selected as the study group, including 32 patients with body mass inde(BMI) ≥25 kg/m2 (obese group) and 54 patients with BMI < 25 kg/m 2 (non-obese group). Another 40 women with healthy physical examination and matching age and BMI of the study group were selected as the normal control group. All of them underwent routine vaginal ultrasound and UE examination, and the differences of parameters in each group were compared. The receiver operating characteristic (ROC) curve was drawn to evaluate the diagnostic efficacy of relevant parameters for PCOS and obesity PCOS. Results The number of follicles and ovarian volume in the study group were higher than those in the normal control group, and the PI and RI of ovarian interstitial artery were lower than those in the normal control group: (17.50 ± 3.23) unit vs. (8.15 ± 2.01) unit, (12.97 ± 3.20) ml vs. (5.36 ± 1.82) ml, 0.82 ± 0.14 vs. 0.93 ± 0.20, 0.52 ± 0.12 vs. 0.58 ± 0.10, there were statistical differences (P<0.05). The number of follicles and ovarian volume in the obese group were significantly higher than those in the non-obese group: (18.98 ± 3.45) unit vs. (16.62 ± 3.17) unit, (15.00 ± 3.15) ml vs. (11.77 ± 2.63) ml, there were statistical differences (P<0.05) but the PI and RI between the obese group and the non-obese group had no significant differences (P>0.05). In the study group, 56 cases (65.12%) had type 1 elastic pattern, which was significantly higher than 4 cases (10.00%) in the normal control group (χ2 = 17.61, P<0.01). The elastic pattern was no significant difference between the obese group and the non-obese group (P>0.05). The elastic coefficient (B/A ratio) in the study group was higher than in the normal control group:7.86 ± 1.51 vs. 4.53 ± 1.10, there was statistical difference (P<0.05). The B/A ratio in the obese group was higher than that in the non-obese group and the normal control group: 8.76 ± 1.35 vs. 7.32 ± 1.34, 4.53 ± 1.10, there were statistical differences (P<0.05). The ROC curve analysis showed that the area under the curve (AUC) of B/A ratio for the diagnosis of PCOS was 0.962, when the cut-off value was 5.56, the corresponding sensitivity and specificity were 93.02% and 87.50%. The AUC of B/A ratio for the diagnosis of obese PCOS was 0.788, when the cut-off value was 8.35, the corresponding sensitivity and specificity were 78.12% and 85.19%. Conclusions The UE has great diagnostic value for PCOS and certain discrimination performance for obese PCOS.
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