Computer technology has brought about incredible changes in medicine and healthcare, greatly improving the efficiency and accuracy of medical treatment. Since December 2019, in the face of the global effects of COVID-19, the significance of computer technology – big data in particular – the collaborative network and unmanned technology have been recognized by all medical staff. We have to admit that modern medical science cannot evolve without the involvement of computer science.

This book presents the proceedings of the 2021 Workshop on Computer Methods in Medicine & Health Care (CMMHC 2021), the autumn edition of the TDI conferences. The webinar of CMMHC 2021 is scheduled for September 26^th, 2021. Researchers from renowned universities, laboratories and hospitals in China, Italy and Japan have contributed to the workshop. These include Fondazione Politecnico di Milano, CAS Institute of Healthcare Technologies, and University of Chinese Academy of Sciences. Findings from both basic and clinical medicine are included in this collection. Big data technology appeared in 20% of all papers as the most popular topic, with one paper covering big data optimization and two describing its application. It is also inspiring to see researchers from a university specializing in traditional Chinese medicine starting to focus on big data technology.

The organizers and editors of this book are happy to have the opportunity to share practical experiences and enlightening ideas with researchers and practitioners in modern medicine.