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Objective To design a virtual reality(VR) system for fracture reduction training using manikin technology.Methods The real-time posture information of the manikin skeleton was acquired by the inertial measurement unit(IMU).3DMAX was used to construct a 3-dimensional human skeleton model based on the human skeleton CT.The model was driven by the received sensor data and displayed the instant attitude.The skeletal attitudes and operation information were displayed in real time through the Visual Studio platform,which was displayed on the screen facing the trainee.Thus,a VA combination interactive training system was constructed.Results and Conclusion A set of simulated fracture reduction training system with high accuracy,low cost and VR combination was designed.Compared with the high-cost,precision optical instrument,the root mean square error (RMSE) of the fraction angle calculation was 0.595° in the static state,and was 1.609° in the dynamic state.This system can provide effective information for training operations and provide a new interactive platform for fracture reduction training.
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BACKGROUND:Rehabilitation training equipments play an important role in the rehabilitation treatment. Because of poor muscle strength and joint mobility in patients, we must guarantee the safety of rehabilitation training equipments. OBJECTIVE:To design a new suitable man-machine interface that ensures patients can use rehabilitation equipments and even parts of fitness equipments safely. METHODS:Through user experience research, we found the flaws of the existing rehabilitation equipment. Depending on the principles of ergonomics, we designed a new man-machine interface for upper limb exercise through survey and computer-aided design. RESULTS AND CONCLUSION:The new man-machine interface program achieves the rapid wear and discharge between patients and rehabilitation training equipment, and importantly, it can automatical y separate people from the equipment when the patient's body discomforts or equipment failure appears. What’s more, this man-machine interface can be promoted to other fitness equipments. As a result, rehabilitation training for patients wil be more convenient.
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BACKGROUND:It remains hard to judge characterization of lesion tissues using two-dimensional sectional image at present. Medical three-dimensional reconstruction technique could obviously improve work efficiency and accuracy of medical working staff on disease diagnosis. OBJECTIVE:To develop a three-dimensional medical visualization system can rebuild three-dimensional model of corresponding parts by reading DICOM data, and observe the appearance of affected hip joint using reconstructed models. METHODS:A three-dimensional (3D) medical visualization system was developed using the MFC in a PC with Windows XP operating system, development environment VC++6.0, VTK 5.6 instal ation, and necessary settings were made. Precise procedures are as fol ows: ① create a drawing object; ② create a drawing window, and draw objects was added in draw window; ③ read the CT image sequences, and set the path of the read image sequence; ④ isosurface (generate triangular facets) were extracted using MC algorithm, depending on the gray, skin and bones. Data of the input image sequence were set;gray value of tissue contour was set; ⑤the establishment of a V-belt objects and data mapping object; ⑥ graphics rendering, to receive the properties of the geometric data, and a different colors and transparency of bones and skin were set; ⑦ the viewing position was set to observe the position of the object and focus; ⑧ to create a human-computer interaction function. RESULTS AND CONCLUSION:VC++6.0 and VTK could meet the needs of medical 3D visualization systems development. Developed 3D visualization system software could perform 3D reconstruction through reading CT images of DICOM format files. Thus, the relevant parts of the reconstructed 3D model could be observed by rotating, zooming, and panning so as to visual y observe the bone structure of hip joint, fractured appearance and type. It provided a reference for relevant therapy and operation.
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Objetivos: É salientar a contribuição da engenharia da usabilidade para a segurança de um sistema informatizado em saúde. Métodos: Pesquisa constituída de livros, artigos e materiais disponibilizados na Internet. São poucas as pesquisas em desenvolvimento de sistemas seguros e menos ainda, focados à engenharia da usabilidade, a qual é comumente vista como aliada apenas à engenharia de software. É preciso mudar esta visão. Resultados: São apresentados exemplos de falhas de segurança por falta de usabilidade, assim como tópicos da usabilidade relacionados à segurança da informação. Conclusão: Esse artigo contribui para o desenvolvimento e a operação de um sistema de informação em saúde funcional e seguro.
Objectives: Of this paper is to highlight the contribution of usability engineering for the security of a system computerized in health. Methods: Was used, consisting of books, articles and materials available on the Internet. There is little research in developing secure systems and even less focused on usability engineering, which is commonly seen as an ally only to software engineering. It is necessary to change this view. Results: This paper provides examples of security flaws due to lack of usability, as well as topics of usability related to information security. Conclusion: Thus, this paper contributes to the development and operation of a system computerized in health functional and secure.
Objetivos: Trabajo es poner de relieve la contribución de la ingeniería de usabilidad para la seguridad de la salud informatizados. Métodos: Utilizó de la investigación basada en libros, artículos y materiales disponibles en Internet. No hay mucha investigación en el desarrollo de sistemas seguros y menos centrada en la ingeniería de usabilidad, que es comúnmente vista como una aliada único para la ingeniería de software. Es necesario cambiar este punto de vista. Resultados: Son ejemplos de fallos de seguridad debido a la falta de usabilidad, así como temas relacionados con la usabilidad de seguridad de la información. Conclusión: Por lo tanto, este trabajo contribuye al desarrollo y operación de un sistema de información de salud funcional y seguro.