Bulletin No. 1, 2021

OPERATIONAL STAGE ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) Each hospital trains its own lesion detection models using its own stock of CT scans. The insights but not the images themselves are sent to the main server. The main server improves the central model in light of the insights. An updated version of the central model is then distributed to each hospital, where it is further trained for more insights and further improvement. This cycle goes on until the central model achieves a certain accuracy. TRAINING STAGE 1 TRAINING STAGE 2 28 CHINESE UNIVERSITY BULLETIN NO.1, 2021