Encontrados 7 documentos, a visualizar página 1 de 1
Development of a Single Photon Emission Computed Tomography System
António Sousa Pereira; J J. P. de Lima; E. Alte da VeigaSinge Photon Emission. Computed Tomography is a powelful technique increasing lesion detection. Qualitative and quantitative data can be extracted from the tridimensional distribution of the radiopharmaceutical. However, SPECT images are affected by several physical factors that need to be minimised and compensated. (...)keywords: Medical imaging; nuclear medicine; tomographyPh.D., 1986more info: ...
Process, Integration and Visualization of Multimodal Images
Óscar Emanuel Chaves Mealha; António Sousa Pereira; Beatriz Sousa SantosThe tomographic modalities that exist nowadays are important tools used to elaborate and/or consolidate a certain diagnosis, conduct a therapy, or to perform a surgical study. The tomographic modalities have specfic programs to reconstruct, visualize and analyze the data produced in a circular multiple view basis. Only recently, with the advent and popularity of powerful workstations, have the 3D reconstru...
Development of a Picture Archiving an Communication Systems Prototype
Rui Rocha Ribeiro; António Sousa PereiraThe importance of imaging modalities in health-care has been steadily increasing in recent years. This has brought an increase in the number of performed imaging studies which, in turn, meant an enormous increase of film production in hospital imaging departments. (...)Keywords: medical imaging; PACS; ultrasound; HIS; RISM.S., 1994more info. http://opac.ua.pt/F/?func=find-b&find_code=SYS&REQUE...
Princípios de qualidade no contexto dos Cuidados de Saúde em Linha
Sara Matias Fonseca; António Sousa PereiraThis paper’s main objectives are to describe the environment surrounding Online Healthcare, as a potential means of providing health information and advice, and also to spread the major certification initiatives presently in course.Finally, and using the knowledge acquired with those initiatives, we proceed to the selection of key-criteria in the field of Online Healthcare In...
WMISI 2007: Workshop on Medical Instrumentation Signal and Imaging
João Veloso; António Sousa Pereira; Maria Celeste do Carmo; Augusto Silva; José Carlos LopesWMISI 2007: Workshop on Medical Instrumentation Signal and Imaging, 11–12 April 2007, Aveiro, PortugalMedical Imaging may be regarded as paradigm for multidisciplinary scientific and technological convergence. Development of imaging devices and applications often result from concerted activities of basic scientific research, technological driven efforts and clinical validation. This broad scientific field...
Image reconstruction problems in dynamic X-Ray computed tomography
Augusto Marques Ferreira da Silva; J. J. Pedroso de Lima; António Sousa PereiraIn this work we deal with problems in reconstructing images from its projections due to limited azimuthal sampling. Among the applications where this type of problems arise we focus on those related with dynamics X-ray tomography. (...)Keywords: tomography; III-posed problems; Radon transform; image reconstructionPh.D.,1999more info. - http://opac.ua.pt/F/?func=find-b&find_code=SYS&REQUEST=000...
Tele-radiology system
Luis F. C. Figueiredo; Fernando M. S. Ramos; António Sousa PereiraThis paper presents a Tele-radiology system supported in the ISDN, and includes discussion on several aspects of the system, such as digital imaging processing, image compression techniques, communications and human machine interfacing. ; Este artigo pretende, de uma forma resumida, apresentar um trabalho desenvolvido no INESC Aveiro, na área da Tele-medicina. Esse trabalho...
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