Figure 1

Model architecture and annotation. Overall architecture of the proposed model from EfficientDet-D4 (a). Conv, convolutional network; MBConv, mobile inverted bottleneck convolution block; BIFPN, bi-feature pyramid network. Examples of annotated panoramic radiographs and annotation information (b). The blue boxes indicate class 0 (healthy), the red box indicates class 1 (retention pseudocyst), and the yellow box indicates class 2 (cyst or tumor). The information was composed of the location, represented as the upper left (X1, Y1) and the lower right (X2, Y2), and each class name.