RESUMEN
This paper presents a surface-data-based haptic rendering method for simulation of surgery of closed reduction and internal fixation (CRIF). Volumetric data is often employed in the simulation of bone surgery because the volume rendering can easily handle information such as density and rigidity of each voxel. However, it is difficult to implement real-time graphics and haptic rendering because of the large computational workload. Therefore, we propose a surface-data-based haptic rendering method for real-time rendering. Mechanical properties and graphics of the inner part of the bone should be modeled in addition to the surface data to simulate drilling into the bone. An algorithm is developed to construct the surface of the drilled hole. This method allows the user of the simulation to feel the varying forces according to the drilled depth.
Asunto(s)
Algoritmos , Fijación Interna de Fracturas/métodos , Fracturas Óseas/cirugía , Modelos Biológicos , Procedimientos Ortopédicos/educación , Gráficos por Computador , Simulación por Computador , Instrucción por Computador/instrumentación , Instrucción por Computador/métodos , Humanos , Procedimientos Ortopédicos/métodos , Procedimientos Ortopédicos/normasRESUMEN
This paper presents non-clinical evaluation of the KAIST-Ewha Colonoscopy Simulator II. Thirty one engineering-major students with no medical background were divided into two groups after they had been given instruction on colonoscopy and its operation. The baseline evaluation showed that both groups were equivalent in the level of the colonoscopy skills. The simulation-trained group underwent training until they passed all the performance criteria established by colonoscopy experts. Results of final evaluation showed that the simulation-trained group noticeably improved their skills.