Table 1 Description of the performance metrics
From: The McGill simulator for endoscopic sinus surgery (MSESS): a validation study
Metric sphere | Definition | Metric | Units |
|---|---|---|---|
Quality | Completeness of targeted tissue removal | Amount of anterior ethmoids removed | Percentage (amount removed/total amount of relevant tissue) |
Amount of posterior ethmoids removed | Percentage | ||
Amount of sphenoid face removed | Percentage | ||
Efficiency | Task performance with the least amount of unnecessary maneuvers | Time to complete tasks | Seconds |
Path length (endoscope) | Millimeters | ||
Path length (microdebrider) | Millimeters | ||
Fluctuation in distance between tips of endoscope & microdebrider (calculated by interquartile range) | Millimeters | ||
Frequency of microdebrider pedal activation | Number | ||
Amount of endonasal washes | Number | ||
Safety | Amount of collateral damage | Amount of normal tissue removed, namely tissue over three critical ¿no-go¿ zones (lamina papyracea, skull base and optico-carotid recess) | Percentage |
Maximal force applied on skull base and lamina papyracea | Newtons |