Aim: this study, we established an artificial intelligence system for the rapid identification of fetal nucleated red blood cells (fNRBCs). Method: Density gradient centrifugation and magnetic-activated cell sorting were used for the separation of fNRBCs from umbilical cord blood. The cell block technique was used for fixation. We proposed a novel preprocessing method based on imaging characteristics of fNRBCs for the region of interest (ROI) extraction, which automatically segmented individual cells in peripheral blood cell smears. The discriminant information from ROIs was encoded into a feature vector and pathological diagnosis was provided by the prediction network. Results: Four umbilical cord blood samples were collected and validated based on a large dataset containing 260 samples. Finally, the dataset was classified into 3,720 and 1,040 slides for training and testing, respectively. In the test set, the classifier obtained 98.5% accuracy and 96.5% sensitivity. Conclusion: Therefore, this study offers an effective and accurate method for fNRBCs preservation and identification.
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