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目的对比分析全自动容积成像系统与二维超声对瘢痕子宫前壁下段厚度的测量价值。方法两位医师分别使用常规二维超声探头和全自动容积成像系统独立测量200例晚孕期瘢痕子宫前壁下段厚度3次,统计每位医师3次测量组内相关系数和两位医师之间Kappa系数和组间相关系数,及Bland-Altman散点图。结果全自动容积成像系统测量的组内相关系数均>0.96、两位医师的Kappa系数为0.95、组间相关系数为0.98、BlandAltman散点图测值差异的95%一致性界限从-0.30~0.30;二维超声对应组内相关系数均<0.96、Kappa系数为0.65、组间相关系数0.80、测值差异的95%一致性界限从-0.69~0.71。结论全自动容积成像系统提高了瘢痕子宫前壁下段厚度测量的准确率,值得在临床中应用和推广。
Objective To compare and analyze the value of automatic volume imaging system and two-dimensional ultrasonography in measuring the thickness of the inferior uterine anterior wall of scar. Methods Two physicians independently used the conventional two-dimensional ultrasound probe and automatic volume imaging system to measure the thickness of the anterior segment of the anterior wall of the uterus in 200 cases of pregnancy in the third trimester. The correlation coefficients between three groups of physicians and Kappa Coefficient and intergroup correlation coefficient, and Bland-Altman scatter plot. Results The correlation coefficients between two groups were all 0.96. The Kappa coefficient of two physicians was 0.95. The correlation coefficient between groups was 0.98. The 95% consistency of BlandAltman scattergram was -0.30 ~ 0.30 ; The correlation coefficient of two-dimensional ultrasound group was <0.96, Kappa coefficient was 0.65, the correlation coefficient was 0.80 between groups, and the 95% consistency limit of measurement difference was -0.69-0.71. Conclusion The automatic volume imaging system improves the accuracy of the measurement of the thickness of the lower anterior wall of the uterus of the scar, which is worthy of clinical application and promotion.