Manejo de la imagen digital en anatomía patológica.análisis comparativo de dispositivos de entrada

Resum

Introduction: The high prevalence of musculoskeletal disorders among pathologists and the changing towards the digitization of Pathology, leaving aside the conventional optical microscope and moving to use computer and other information and communication technologies, has made us consider the study of different types of input devices which participate in the human computer interaction. Main objective: The main goal of this doctoral thesis has been to improve the knowledge, from an ergonomic point of view, of the human-computer interaction when using input devices in digital pathology. Material and methods: A comparative study of 10 input devices has been carried out by 6 students and these aspects have been assessed: the perceptions of mental workload through the NASA-TLX system, time-recorded task achievement during a standardized exercise as well as those recorded with a web-based Fitts test, displacement and button press data and the electromyographic registration of the muscles involved in the movement while using those input devices. In the same way, a Likert-like scale questionnaire has been used to assess degrees of satisfaction in different aspects. Results: Statistically significant differences were found in practically all of the variables studied between the different input devices and better results could be established for the conventional mouse, followed by vertical mouse, Rollermouse, optical pen, blue trackball, red trackball, black trackball, touchpad, Ergopointer and, ending with Leap Motion. Conclusion: We have validated a system to compare input devices and we have found statistically significant differences, establishing a ranking of devices according to the most relevant ergonomic aspects.