Abstract:

Objective   To evaluate a new method —the Guibaud method for ultrasound measurement of the fetal lateral cerebral ventricle. Methods   One hundred and forty  fetuses’ lateral ventricles width were  measured by the routine method and the Guibaud method. The Bland-Altman statistical method was used to compare the consistency between the two methods.30 fetuses were randomly selected to evaluate the repeatability and reproducibility. Results   The Guibaud method had high consistency with the routine method. 98.6% (138/140) of the points were in the 95% limits of consistency (-0.46,0.73);the mean difference was 0.13cm and the maximum absolute value was 0.7cm.  The repeatability and reproducibility of the Guibaud method was better（P>0.05）. Conclusion   The Guibaud method has high consistency with the routine method.The standard planar is simple and stable to obtain. The repeatability and the reproducibility is better. All of these improve the accuracy of the measurement. 

Key words: Ultrasonography; Fetus; Lateral ventricle; Parieto-occipital sulcus