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Fig. 2 | BMC Pregnancy and Childbirth

Fig. 2

From: Automated prediction of early spontaneous miscarriage based on the analyzing ultrasonographic gestational sac imaging by the convolutional neural network: a case-control and cohort study

Fig. 2

The segmentation process of the gestational sac. A Firstly, the region of interests (ROI) was selected which contained the complete gestational sac. B Secondly, the region of gestational sac was segmented using level set method. C Thirdly, the largest connected area was found. D Fill the largest connected area. E Finally, the complete edge of the gestational sac was extracted and marked on the original image

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