naa a22 4500 510808220 CHVBK 20180411083428.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11548-013-0824-8 doi (NATIONALLICENCE)springer-10.1007/s11548-013-0824-8 The impact of missing sensor information on surgical workflow management [Elektronische Daten] [Philipp Liebmann, Jürgen Meixensberger, Peter Wiedemann, Thomas Neumuth] Objective: Sensor systems in the operating room may encounter intermittent data losses that reduce the performance of surgical workflow management systems (SWFMS). Sensor data loss could impact SWFMS-based decision support, device parameterization, and information presentation. The purpose of this study was to understand the robustness of surgical process models when sensor information is partially missing. SWFMS changes caused by wrong or no data from the sensor system which tracks the progress of a surgical intervention were tested. Materials and methods: The individual surgical process models (iSPMs) from 100 different cataract procedures of 3 ophthalmologic surgeons were used to select a randomized subset and create a generalized surgical process model (gSPM). A disjoint subset was selected from the iSPMs and used to simulate the surgical process against the gSPM. The loss of sensor data was simulated by removing some information from one task in the iSPM. The effect of missing sensor data was measured using several metrics: (a) successful relocation of the path in the gSPM, (b) the number of steps to find the converging point, and (c) the perspective with the highest occurrence of unsuccessful path findings. Results: A gSPM built using 30% of the iSPMs successfully found the correct path in 90% of the cases. The most critical sensor data were the information regarding the instrument used by the surgeon. Conclusion: We found that use of a gSPM to provide input data for a SWFMS is robust and can be accurate despite missing sensor data. A surgical workflow management system can provide the surgeon with workflow guidance in the OR for most cases. Sensor systems for surgical process tracking can be evaluated based on the stability and accuracy of functional and spatial operative results. CARS, 2013 Workflow L01.906.893 nationallicence Information system L01.700.508.300 nationallicence Surgery, computer-assisted L01.700.508.100.710.800 nationallicence Process assessment (health care) N04.761.559.650 nationallicence Surgical process model nationallicence Redundant sensor system nationallicence Liebmann Philipp Innovation Center for Computer Assisted Surgery (ICCAS), University of Leipzig, Semmelweisstr. 14, 04103, Leipzig, Germany aut Meixensberger Jürgen Department of Neurosurgery, University Hospital Leipzig, Liebigstr. 20, 04103, Leipzig, Germany aut Wiedemann Peter Department of Ophthalmology, University Hospital Leipzig, Liebigstr. 10-14, 04103, Leipzig, Germany aut Neumuth Thomas Innovation Center for Computer Assisted Surgery (ICCAS), University of Leipzig, Semmelweisstr. 14, 04103, Leipzig, Germany aut International Journal of Computer Assisted Radiology and Surgery Springer Berlin Heidelberg 8/5(2013-09-01), 867-875 1861-6410 8:5<867 2013 8 11548 https://doi.org/10.1007/s11548-013-0824-8 text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11548-013-0824-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liebmann Philipp Innovation Center for Computer Assisted Surgery (ICCAS), University of Leipzig, Semmelweisstr. 14, 04103, Leipzig, Germany aut NATIONALLICENCE 700 1- Meixensberger Jürgen Department of Neurosurgery, University Hospital Leipzig, Liebigstr. 20, 04103, Leipzig, Germany aut NATIONALLICENCE 700 1- Wiedemann Peter Department of Ophthalmology, University Hospital Leipzig, Liebigstr. 10-14, 04103, Leipzig, Germany aut NATIONALLICENCE 700 1- Neumuth Thomas Innovation Center for Computer Assisted Surgery (ICCAS), University of Leipzig, Semmelweisstr. 14, 04103, Leipzig, Germany aut NATIONALLICENCE 773 0- International Journal of Computer Assisted Radiology and Surgery Springer Berlin Heidelberg 8/5(2013-09-01), 867-875 1861-6410 8:5<867 2013 8 11548 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer