Ontological Modelling of Situational Awareness in Surgical Interventions
نویسندگان
چکیده
Optical navigation systems are the means of choice to overcome spatial association problems of the endoscopic imaging in minimally invasive surgery. Using optical markers, the patient's real position, his medical imaging data and surgical tool locations are mapped into the same workspace. Such visual-based assistance systems however, suffer from their technical requirements. The BIOPASS project aims to develop a navigation system based on a novel marker less localization method that uses only the current surgical situation and the procedure’s history to identify the present anatomy. The ontology, presented in this paper, plays an integral part in this system as it translates the situational information of a surgical procedure into an internal machine-readable representation. This representation combines multimodal sensor data, e.g. endoscopic images, endoscope movement or surgical work steps, to allow a classification of the apparent situation and provide navigation support based on identified anatomical landmarks and work steps. Furthermore, it is a foundation of situational awareness based on spatiotemporal reasoning.
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