96 research outputs found

    A Web-Based Institutional DICOM Distribution System with the Integration of the Clinical Trial Processor (CTP)

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    To develop and test a fast and easy rule-based web-environment with optional de-identification of imaging data to facilitate data distribution within a hospital environment. A web interface was built using Hypertext Preprocessor (PHP), an open source scripting language for web development, and Java with SQL Server to handle the database. The system allows for the selection of patient data and for de-identifying these when necessary. Using the services provided by the RSNA Clinical Trial Processor (CTP), the selected images were pushed to the appropriate services using a protocol based on the module created for the associated task. Five pipelines, each performing a different task, were set up in the server. In a 75 month period, more than 2,000,000 images are transferred and de-identified in a proper manner while 20,000,000 images are moved from one node to another without de-identification. While maintaining a high level of security and stability, the proposed system is easy to setup, it integrate well with our clinical and research practice and it provides a fast and accurate vendor-neutral process of transferring, de-identifying, and storing DICOM images. Its ability to run different deidentification processes in parallel pipelines is a major advantage in both clinical and research setting

    Information Systems and Healthcare XVII: Operational Stakeholder Relationships in the Deployment of a Data Storage Grid for Clinical Image Backup and Recovery

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    A data storage grid (DSG) is under development for a federation of clinical sites to provide a cost-effective backup and recovery solution for their clinical images. Geographic separation provides fault-tolerance against localized disasters. Pooling of storage resources across organizations utilizes economies of scale associated with storage area networks. However, the control and administration of a DSG is now spread across multiple organizations increasing the complexity of deployment. Socio-technical issues specific to a DSG arise as there are now multiple stakeholders linked together in a network of new relationships. Agreement upon every relationship is necessary to determine service level agreements, security, and liability such as in the event of a security breach. Implications of socio-technical networks and stakeholder analysis on the operators, rather than the users, of an interorganizational DSG are discussed

    Métodos computacionais para otimização de desempenho em redes de imagem médica

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    Over the last few years, the medical imaging has consolidated its position as a major mean of clinical diagnosis. The amount of data generated by the medical imaging practice is increasing tremendously. As a result, repositories are turning into rich databanks of semi-structured data related to patients, ailments, equipment and other stakeholders involved in the medical imaging panorama. The exploration of these repositories for secondary uses of data promises to elevate the quality standards and efficiency of the medical practice. However, supporting these advanced usage scenarios in traditional institutional systems raises many technical challenges that are yet to be overcome. Moreover, the reported poor performance of standard protocols opened doors to the general usage of proprietary solutions, compromising the interoperability necessary for supporting these advanced scenarios. This thesis has researched, developed, and now proposes a series of computer methods and architectures intended to maximize the performance of multi-institutional medical imaging environments. The methods are intended to improve the performance of standard protocols for medical imaging content discovery and retrieval. The main goal is to use them to increase the acceptance of vendor-neutral solutions through the improvement of their performance. Moreover, it intends to promote the adoption of such standard technologies in advanced scenarios that are still a mirage nowadays, such as clinical research or data analytics directly on top of live institutional repositories. Finally, these achievements will facilitate the cooperation between healthcare institutions and researchers, resulting in an increment of healthcare quality and institutional efficiency.As diversas modalidades de imagem médica têm vindo a consolidar a sua posição dominante como meio complementar de diagnóstico. O número de procedimentos realizados e o volume de dados gerados aumentou significativamente nos últimos anos, colocando pressão nas redes e sistemas que permitem o arquivo e distribuição destes estudos. Os repositórios de estudos imagiológicos são fontes de dados ricas contendo dados semiestruturados relacionados com pacientes, patologias, procedimentos e equipamentos. A exploração destes repositórios para fins de investigação e inteligência empresarial, tem potencial para melhorar os padrões de qualidade e eficiência da prática clínica. No entanto, estes cenários avançados são difíceis de acomodar na realidade atual dos sistemas e redes institucionais. O pobre desempenho de alguns protocolos standard usados em ambiente de produção, conduziu ao uso de soluções proprietárias nestes nichos aplicacionais, limitando a interoperabilidade de sistemas e a integração de fontes de dados. Este doutoramento investigou, desenvolveu e propõe um conjunto de métodos computacionais cujo objetivo é maximizar o desempenho das atuais redes de imagem médica em serviços de pesquisa e recuperação de conteúdos, promovendo a sua utilização em ambientes de elevados requisitos aplicacionais. As propostas foram instanciadas sobre uma plataforma de código aberto e espera-se que ajudem a promover o seu uso generalizado como solução vendor-neutral. As metodologias foram ainda instanciadas e validadas em cenários de uso avançado. Finalmente, é expectável que o trabalho desenvolvido possa facilitar a investigação em ambiente hospitalar de produção, promovendo, desta forma, um aumento da qualidade e eficiência dos serviços.Programa Doutoral em Engenharia Informátic

    Picture archiving and communication systems in the South African public healthcare environment : a suitable structure and guidelines to assist implementation and optimisation

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    Thesis (MScEng)-- Stellenbosch University, 2013.ENGLISH ABSTRACT: South Africa has a great number of patients and not enough medical expertise to attend to their patient needs. The South African Department of Health (DoH) has recognised the potential benefit of the Picture Archiving and Communication System (PACS) to address the health needs of rural patients who do not have access to specialised medical care. PACS allows specialist remote access to patient information to assist the diagnosis and treatment process remotely. South African healthcare institutions have been implementing PACS for over a decade, in an attempt to address the health needs of rural patients that do not have access to specialised medical care. Despite numerous deployment attempts, and the DoH’s support for PACS, the system is not operating successfully in South Africa. PACS was chosen due to its proven success as an appropriate technical system in most international hospitals of first and third- world countries (van Wetering, 2008) (Horri, 2010). However, specifications, guidelines and best practice operational methods for the appropriate PACS technical structure are lacking in South African literature and in governmental strategies. Additionally, there are no guidelines for implementation or support for hospital decision makers to manage the system and enterprise change. The purpose of this thesis is to (a) define a PACS technical and operational structure suited for the South African public healthcare environment and, (b) to develop guidelines for implementation and optimisation of PACS for managing the system and the enterprise change and progressively reach the defined structure. A combination of literature research, field observations and focus group discussions led to the understanding of the current (“As-Is”) PACS healthcare delivery system in South Africa and its barriers. Three types of PACS structures were found to be currently available: a DICOM-only image management system; a vendor supplied PACS; and a super-PACS. It was found that currently very few PACS systems in South Africa are operational and integrated with other healthcare institutions. This was due to a combination of factors: a) the complex, long chain of interdependent process steps and domains; b) vendor imposed limitations and propriety data formats; in combination with c) a lack of governing standards to ensure integration of digital PACS systems within the healthcare delivery environment; and lastly d) key decision makers lack the expert knowledge necessary to make informed decisions to deploy and manage PACS optimally. Further research led to establishing the (“To-Be”) PACS technical and operational structure suited for the South African public healthcare environment. Research has shown that the suited PACS technical and operational structure is a hospital-owned PACS system, free from vendor-imposed limits. The system consists of two databases, one with patient information and the other with patient images. The two databases are integrated by a hospital-owned server, which accesses the separate data files by means of patient identity keys. The requirements for the PACS implementation and optimisation guidelines for managing the system and the enterprise change to progressively reach the defined structure were developed. Different Enterprise Architectural Frameworks, as improvement and optimisation guidelines, were considered and compared in accordance with the requirements established. A maturity model (MM) was deemed as the appropriate framework to offer guidelines for managing PACS implementation and optimisation in the public medical sector of South Africa. After establishing that the available MMs were not sufficient in process or technical system detail, a new MM was developed for the deployment and maturation of PACS. The study was validated by means of usability study, user acceptance and goal checking, through focus group discussion and expert review. Users found the model to be a suitable deployment and optimisation guide, as well as a strategic planning tool. Verification was achieved by means of requirement analysis and consistency checking through the focus group discussions. It was found that it is needed to define a PACS technical and operational structure is suited for the South African public healthcare environment and that the guidelines for implementation and optimisation of PACS for managing the system and the enterprise needs to change to reach the defined structure functional. Implementing the use of PACS MM to reach the defined structure in South Africa will assist in improving healthcare delivery in South Africa and improving PACS system operation.AFRIKAANSE OPSOMMING: Suid-Afrika het 'n groot aantal pasiënte en nie genoeg mediese kundiges om aan hul pasiënt behoeftes te voorsien nie. Die Suid-Afrikaanse Departement van Gesondheid (DvG) erken die potensiële voordeel van ‘n Foto Argief en Kommunikasie Stelsel (PACS) om die gesondheidsbehoeftes van alle Suid-Afrikaners aan te spreek – tot die landelike pasiënte wat nie toegang tot gespesialiseerde mediese sorg het nie. PACS laat spesialiste toe om toegang te kry tot afgeleë pasiënt inligting, en daardeur fasiliteer dit die diagnose- en behandelingsproses. Suid-Afrikaanse gesondheidsorginstellings poog al vir meer as ‘n dekade om PACS te implementeer, om daardeur die gesondheidsbehoeftes van landelike pasiënte wat nie toegang tot gespesialiseerde mediese sorg het nie, aan te spreek. Ten spyte van talle ontplooiings pogings, en die DvG se steun vir PACS, is die stelsel steeds nie suksesvol in Suid-Afrika nie. PACS is gekies as ‘n oplossing, as gevolg van die sisteem se bewese sukses as 'n geskikte tegniese stelsel in meeste internasionale hospitale in eerste en derde wêreld lande (van Wetering, 2008) (Horri, 2010). Suid-Afrikaanse regering strategie en literatuur het egter ‘n gebrek aan spesifikasies, riglyne en beste- praktyk operasionele metodes vir die toepaslike PACS tegniese struktuur. Benewens is daar geen riglyne vir die implementering en ondersteuning van die stelsel en die onderneming se verandering vir hospitaal besluitnemers nie. Die doel van hierdie tesis is om (a) 'n PACS tegniese en operasionele struktuur, geskik vir die Suid-Afrikaanse openbare gesondheidsorg omgewing te definieer, en (b) riglyne vir die implementering en afronding van PACS vir die bestuur van die stelsel en die onderneming se verandering teen doel om progressief die gedefinieerde struktuur te bereik. 'n Kombinasie van literatuur navorsing, veldwaarnemings en fokusgroepbesprekings het gelei tot die begrip van die huidige ("as- is") PACS gesondheidsorg proses in Suid-Afrika en die hindernisse daarvan. Drie tipes PACS strukture is tans beskikbaar in SA: 'n DICOM (net-mediese- beelde) beheer stelsel, 'n verkoper verskafde PACS, en 'n super-PACS. Deur uitgebreide navorsing is daar gevind dat baie min PACS stelsels in Suid-Afrika tans operasioneel en geïntegreer is met ander gesondheidsorg instellings. Dit was te danke aan 'n kombinasie van faktore: a) die kompleks, lang ketting van interafhanklike proses stappe en gebiede; b) ondernemer opgelê beperkings en ordentlikheid data formate; in kombinasie met c) 'n gebrek aan beheer standaarde integrasie van digitale PACS stelsels om te verseker binne die lewering van gesondheidsorg-omgewing, en laastens d) sleutel besluitnemers nie die deskundige kennis wat nodig is om ingeligte besluite te sit en te bestuur PACS optimaal te benut. Verdere navorsing het gelei tot die vestigting van die geskikde("to-be") PACS tegniese en operasionele struktuur, vir die Suid-Afrikaanse openbare gesondheidsorg omgewing. Die geskik PACS tegniese en operasionele struktuur bestaan uit ‘n hospitaal-besitde PACS stelsel, vry van ondernemer-opgelegde grense. Die stelsel bestaan uit twee databasisse, een met 'n pasiënt inligting en die ander met dei pasiënte se mediese beelde. Die twee databasisse geïntegreer deur 'n hospitaal-besitde-rekenaarbediener, wat toegang tot die afsonderlike data lêers het deur middel van die unieke pasiënt nommers. Die vereistes vir die PACS implementering en afrondings riglyne, vir die bestuur van die stelsel en die ondernemings veranderinge, is ontwikkel. Verskillende ondernimings argitektuur raamwerke is oorweeg en vergelyking in terme van hulle vermoe om aan die gesigde vereistes et voldoen. As ‘n resultaat is die volwassenheid model (MM) beskou as die toepaslike raamwerk om riglyne vir die bestuur van PACS implementering en afronding in die openbare mediese sektor van Suid-Afrika te bied. Na die beskikbare MMs geasseseer was en nie voldoende bewys is, was 'n nuwe MM ontwikkel vir die implementeering en afronding van PACS. Die studie was gevalideer deur middel van die bruikbaarheid studie, gebruikers aanvaarding en doelwit asseseering, deur middel van fokusgroep besprekings en kundige oorsig. Gebruikers het gevind dat die model geskikte as implementeerings en afrondings gids, sowel as 'n geskikte strategiese beplanning hulpmiddel is. Verifikasie is bereik deur middel van vereiste-ontleding en konsekwentheid analiseering deur die fokusgroep besprekings en spesifikasie analise. Die PACS tegniese en operasionele struktuur wat definieer was, is geskik vir die Suid-Afrikaanse openbare gesondheidsorg omgewing en dat die riglyne vir die implementering en afronding van PACS funksioneel is . Die implementering en gebruik van die gedefinieerde struktuur deur mideel van die PACS MM in Suid-Afrika, sal help in die verbetering van gesondheidsorg dienslewering en die verbetering van PACS stelsel operasie

    DICOM-RT standart in Radiotherapy information systems - A National Study

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    Mestrado em Informática MédicaMaster Programme in Medical Informatic

    Plataforma de análise de dados para o Dicoogle

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    Mestrado em Engenharia de Computadores e TelemáticaAs últimas décadas têm sido caracterizadas pelo aumento do número de estudos imagiológicos produzidos, elementos fundamentais no diagnóstico e tratamento médico. Estes são armazenado em repositórios dedicados e são consumidos em estações de visualização que utilizam processos de comunicação normalizados. Os repositórios de imagem médica armazenam não só imagem médica, mas também uma grande variedade de metadados que têm bastante interesse em cenários de investigação clínica e em processos de auditoria que visam melhorar a qualidade de serviço prestado. Tendo em atenção a tremenda quantidade de estudos produzidos atualmente nas instituições de saúde, verificamos que os métodos convencionais são ineficientes na exploração desses dados, obrigando as instituições a recorrer a plataformas de Inteligência Empresarial e técnicas analíticas aplicadas. Neste contexto, esta dissertação teve como objetivo desenvolver uma plataforma que permite explorar todos os dados armazenados num repositório de imagem médica. A solução permite trabalhar em tempo real sobre os repositórios e não perturba os fluxos de trabalho instituídos. Em termos funcionais, oferece um conjunto de técnicas de análise estatística e de inteligência empresarial que estão acessíveis ao utilizador através de uma aplicação Web. Esta disponibiliza um extenso painel de visualização, gráficos e relatórios, que podem ser complementados com componentes de mineração de dados. O sistema permite ainda definir uma multitude de consultas, filtros e operandos através do uso de uma interface gráfica intuitiva.In the last decades, the amount of medical imaging studies and associated metadata available has been rapidly increasing. These are mostly used to support medical diagnosis and treatment. Nonetheless, recent initiatives claim the usefulness of these studies to support research scenarios and to improve the medical institutions business practices. However, their continuous production, as well as the tremendous amount of associated data, make their analysis difficult by conventional workflows devised up until this point. Current medical imaging repositories contain not only the images themselves, but also a wide-range of valuable metadata. This creates an opportunity for the development of Business Intelligence and analytics techniques applied to this Big Data scenario. The exploration of such technologies has the potential of further increasing the efficiency and quality of the medical practice. This thesis developed a novel automated methodology to derive knowledge from multimodal medical imaging repositories that does not disrupt the regular medical practice. The developed methods enable the application of statistical analysis and business intelligence techniques directly on top of live institutional repositories. The resulting application is a Web-based solution that provides an extensive dashboard, including complete charting and reporting options, combined with data mining components. Furthermore, the system enables the operator to set a multitude of queries, filters and operands through the use of an intuitive graphical interface

    The adoption of ICT in Malaysian public hospitals: the interoperability of electronic health records and health information systems

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    There have been a number of researches that investigated ICT adoption in Malaysian healthcare. With the small number of hospitals that adopt ICT in their daily clinical and administrative operations, the possibility to enable data exchange across 131 public hospitals in Malaysia is still a long journey. In addition to those studies, this research was framed under six objectives, which aim to critically review existing literature on the subject matter, identify barriers of ICT adoption in Malaysia, understand the administrative context during the pre and post-ICT adoption, and recommend possible solutions to the Ministry of Health of Malaysia (MoHM) in its efforts to implement interoperable electronic health records (EHR) and health information systems (HTIS). Specifically, this research aimed to identify the factors that had significant impacts to the processes of implementing interoperable EHR and HTIS by the MoHM. Furthermore, it also aimed to propose relevant actors who should involve in the implementation phases. These factors and actors were used to develop a model for implementing interoperable EHR and HTIS in Malaysia. To gather the needed data, series of interviews were conducted with three groups of participants. They were ICT administrators of MoHM, ICT and medical record administrators of three hospitals, and physicians of three hospitals. To ensure the interview feedback was representing the context of EHR and HTIS implementation in Malaysia, two hospital categories were selected, which included the hospitals with HTIS and non-HTIS hospitals. The government documents were then used to triangulate the feedback to ensure dependability, credibility, transferability and conformity of the findings. Two techniques were used to analyse the data, which were thematic analysis and theme matching. These two techniques were modified from its original method, known as pattern matching. The originality of this research was presented in the findings and methods to transform them into solutions and provide recommendation to the MoHM. In general, the results showed that the technological factors contributed less to the success of the implementation of interoperable EHR and HTIS compared to the managerial and administrative factors. Four main practical and social contributions were identified from this research, which included synchronisation of managerial elements, political determination and change management transformation, optimisation of use of existing legacy system (Patient Management System) and finally the roles of actors. Nevertheless, the findings of this research would be more dependable and transferable if more participants had been willing to participate especially among the physicians and those who managed the ICT adoptions under the MoHM
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