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Artificial Intelligence in Health                                        Blockchain for health-care security



            health-care system through the help of government and   such as Apple and Google have developed contact tracing
            policy. However, the health-care applications cannot   applications to track COVID-19 patients.  However, these
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            securely share data through the application with data   applications are not decentralized, so patients’ data can be
            resources.  Personal health-care record (PHR) technology   easily accessed, resulting in a breach of data privacy. Data
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            has been introduced to safeguard and store the patients’   in a centralized system are prone to fraud, deletion, and
            medical records, which the patients control.       modifications, undermining the data integrity of these
              The PHR secured some confidential governance.    systems. Blockchain technology can assist in lowering the
            A  previous  study   has  highlighted  the  harmful  impact   impacts of the COVID-19 pandemic while providing high
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            of  poor  record  sharing  on  patient  treatment,  suggesting   security and ensuring that a failed attack does not occur.
            that the patients become part of the health-care platform   This is due to the decentralized feature of blockchain, and
            that requires advanced tools and capabilities. Al Mamun   all the data and records of transactions stored in blockchain
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            et al.  asserted that patients should control their medical   are transparent to all the network members.  Therefore,
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            data through electronic medical records. Since electronic   data are more reliable and trustworthy.
            medical records consist of confidential and sensitive   To make data immutable, hashing or cryptographic
            information, the robust security system should be   algorithms are applied in the blockchain, linking one block
            transparent. Blockchain ensures safe transduction and   to another. 10,11  Smart contracts are also used by blockchain
            transparent medical history records – an important   technology to automate business processes and resolve
            attribute that helps build patients’ trust. For instance, based   health-care collaborators’ disputes. Blockchain technology
            on the medical records of HIV patients, cancer patients   employing intelligent contracts can be applied to the logistic
            have to endure long-duration treatment.  The electronic   supply  management  of  COVID-19  polymerase  chain
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            medical  record  services  with  integrated  blockchain   reaction testing kits.  This can help track supplies of these
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            technology make the process of data storing and securing   kits, recognize faulty or fake kits, monitor the condition of
            incredibly easier by storing the results of laboratory test   testing kits while shipping, and allow government officials
            reports, post-treatment reports, etc.              to analyze the supply and demand of testing kits in specific
              The Commonwealth Health Alliance took the initiative   locations. The paper will discuss the algorithms used for
            to secure the patients’ electronic health records (EHRs)   blockchain security and technology in health-care sector
            efficiently. Medical and health-care services are becoming   in the aspect of protecting medical records.  The main
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            increasingly  important  in  the  present  environment,   contributions of this paper are illustrated as follows:
            and they must be supplied on time, securely, and safely.    (i)  Comprehensive overview: To provide a summary of
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            Disease identification has become a crucial responsibility   blockchain technology and discuss its various uses
            for medical practitioners. Many viral and cardiovascular   and implications for the health-care industry.
            disorders, including COVID-19 and diabetes, should be   (ii)  Security concerns in health care:  To outline how
            diagnosed in the early phase for optimal treatment. Given   blockchain technology resolves important security
            its rapid dissemination, detecting coronavirus has become a   issues in the medical field and promote it as a
            critical endeavor. However, deep learning holds significant   dependable means of protecting clinical data.
            value for detecting diseases by analyzing large volumes of   (iii) Blockchain security algorithms: To provide a useful
            image data, with blockchain allowing for decentralized and   insight into the technical aspects of using blockchain
            secure data access. 6                                 technology to secure medical records by discussing
              Researchers  are  continuously  struggling  to  improve   the algorithms used for blockchain security.
            disease detection models. To achieve this, hospitals, testing   The rest of this paper is organized as follows: Section 2
            laboratories, research centers, and other organizations   summarizes related works and motivations, and section 3
            can  share  their  data  and  work  together  to  improve  the   introduces the background of blockchain technology. The
            learning model. As the security of personal information   blockchain based on consensus algorithms in health-care
            held in hospital databases is of paramount importance   sector is reviewed in section 4. Section 5 encapsulates
            concern, every party needs to commit to protecting data   a blockchain-based EHR system for Healthcare 4.0
            privacy.  However, accurate and efficient learning models   Applications. The taxonomy of blockchain technology
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            are still required for various applications. Due to ethical   in health care is discussed in section 6. In section 7, the
            and regulatory concerns about medical data privacy, data   strength of blockchain technology in the health-care sector
            sharing among organizations are limited.           is reviewed. Section 8 discusses blockchain technology
              Many applications have been deployed in the battle   and  applications  in  health  care.  The  research  gap  and
            against the COVID-19 pandemic. For example, companies   technical limitations of blockchain in health care, and the


            Volume 1 Issue 2 (2024)                         30                               doi: 10.36922/aih.2580
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