Fig. 2.

The BDLCD scheme is a global model with several components that function together. First, CT scans are entered into health systems. The CT images are normalized, the CNN model analyses the pictures, and the results are given to the edge layer. They can then share data across edge nodes to decrease device overhead. The blockchain is utilized to keep track of the patient's vital information. Finally, data is distributed between the centers and the edge layer, and final results are achieved.