In recent years, many researchers have focused on developing a feasible solution for storing and exchanging medical images in the field of health care. Current practices are deployed on cloud-based centralized data centers, which increase maintenance costs, require massive storage space, and raise privacy concerns about sharing information over a network. Therefore, it is important to design a framework to enable sharing and storing of big medical data efficiently within a trustless environment. In the present paper, we propose a novel proof-of-concept design for a distributed patient-centric image management (PCIM) system that is aimed to ensure safety and control of patient private data without using a centralized infrastructure. In this system, we employed an emerging Ethereum blockchain and a distributed file system technology called InterPlanetary File System (IPFS). Then, we implemented an Ethereum smart contract called the patientcentric access control protocol to enable a distributed and trustworthy access control policy. IPFS provides the means for decentralized storage of medical images with global accessibility. We describe how the PCIM system architecture facilitates the distributed and secured patient-centric data access across multiple entities such as hospitals, patients, and image requestors. Finally, we deployed a smart contract prototype on an Ethereum testnet blockchain and evaluated the proposed framework within the Windows environment. The evaluation results demonstrated that the proposed scheme is efficient and feasible.
翻译：近些年来,许多研究人员侧重于为医疗领域医疗图像的储存和交换制定可行的解决方案,目前的做法被运用于云型中央数据中心,这增加了维护成本,需要大量的储存空间,并提出了网络共享信息的隐私问题,因此,必须设计一个框架,以便能够在一个没有信任的环境中有效地分享和储存大型医疗数据。在本文件中,我们提议为分布式的以病人为中心的图像管理(PCIM)系统设计一个新的概念证明设计,该系统旨在确保病人私人数据的安全和控制,而不必使用集中的基础设施。在这个系统中,我们采用了新兴的Eetherum链和分布式档案系统技术,称为InterPlanetary档案系统(IPFS)。随后,我们实施了称为以病人为中心的访问控制协议的Etheenum智能合同,以促成分散和可靠的访问控制政策。在本文件中,我们提出了一种分散和可全球访问的医疗图像储存工具。我们描述了PCIM系统架构如何促进医院、病人和图像请求者等多个实体对病人个人数据进行传播和保密的获取。最后,我们在Etherum Clasnexe(Estal)中,我们将一个智能合同在拟议的Estex-eal views eal view view view view view view view view eal view view eal viewdal viewdaldaldaldaldal efaldaldaldaldaldaldaldaldaldal egald e egine egine egine egine egine e e ectional egine egine egine e e e e e e e e e e e e e egal efal e e e e e efal efal ectional ectional ectional ectional eal eal ection sal eal e e e e e e e e eal eal eal eal eal e e e e e e e e e e
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