Sharing Medical Questionnaries based on Blockchain

Hospitals provide a considerable amount of questionnaires to patients, and their result data can be one of the significant measures to check a patient's current health. In many cases, however, such data utilization in another kind of healthcare services is unsatisfactory because patients cannot manage the data by themselves. We propose a blockchain-based medical questionnaire management system for data sharing. This system guarantees the integrity of questionnaire result data using characteristics of the blockchain. Furthermore, data in this system can be in interoperable with other systems because it is generated based on the international standard Health Level 7 Fast Healthcare Interoperability Resources. This paper explores how to use medical questionnaire result data for the lifelong healthcare of patient and better quality of health care services and enhance the security of personal medical records.