In this paper, we present and evaluate an interactive gesture controlled application using the Leap Motion for medical visualization, focusing on user satisfaction as an important component in the composition of the application success factors. Usability testings were conducted to verify important application requirements, among which, the asepsis in the working environment, accuracy of the interaction gestures, interaction time, level of interactivity, naturalness, effectiveness, ease of use and of learning, visual quality of the interface, utility, satisfaction and the non-occurrence of fatigue (physical and mental). The results show the effectiveness of the application in the recognition process of the modeled gestures and a very high level of overall satisfaction of the participants, indicating its strong potential as a touchless support tool in medical tasks guided by radiological images conducted in operating rooms.