Abstract：Objective: To observe the diagnostic value of four-dimensional ultrasound imaging technique for fetal external anomalies. Methods: 200 pregnant women in the hospital were given two-dimensional and four-dimensional ultrasonography in the middle and late stages. With postpartum or induced labor pathological examination as the golden standard,the accuracy, sensitivity and specificity of two-dimensional ultrasound and four-dimensional ultrasound for diagnosis of fetal external anomalies were compared. Results: The sensitivity, specificity, accuracy and Kappa value of two-dimensional ultrasonography for fetal external anomalies were 64.29%,87.10%,85.50%and 0.32.However,those of four-dimensional ultrasonography were 92.86%,97.83%,97.50%and 0.83.The accuracy, specificity and detection rate of fetal external anomalies of four-dimensional ultrasonography were significantly higher than those of two-dimensional ultrasonography (P<0.05). Conclusion: Compared with two-dimensional ultrasound, the accuracy of four-dimensional ultrasound imaging technique is higher for diagnosis of fetal external anomalies. t can detect fetal external anomalies more effectively, with great application value.
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2020, Vol. 26 
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