Simulation in Robotic Surgery: a comparative review of simulators of the da Vinci surgical robot by Truong Mireille & Smith Roger

Author:Truong, Mireille & Smith, Roger [Truong, Mireille]
Language: eng
Format: epub
Published: 2013-05-04T16:00:00+00:00

DVSS

As described earlier, the DVSS performance scoring method has a number of metrics which are applied to every exercise and others which are only used for exercises in which they are relevant. Table 5 presents the metrics which are available on all exercises. For details on the more specialized metrics, the reader should consult the user’s manual for this simulator.

Table 5. DVSS and dV-Trainer Scoring Method

Because the DVSS is a closed, turn-key system with an ease of use similar to the actual surgical robot, most of the data displays and threshold adjustments found in the other simulators are not available in this device. Generally, the simulator settings are determined by the manufacturer and cannot be changed by the user.

dV-Trainer

Originally, the DVSS and the dV-Trainer shared the same scoring method, but more recent versions of the dV-Trainer offer both this original “version 1” scoring method, as well as a new “version 2” method based on the proficiency measured from experienced surgeons. The skills measured are the same, but the interpretation of those into a score is different. The instructor can select the preferred scoring method for each curriculum that is constructed in the dV-Trainer.

Users will notice that the newer scoring method uses total points earned rather than percentages. The passing and warning thresholds can be adjusted by the administrator. The philosophy, validity, and effects associated with these settings are more detailed than is necessary for understanding the use of the simulator. Interested readers should consult the user’s manual and published literature for details on the two scoring mechanisms.

RoSS

The principles behind the scoring system on the RoSS are the same as those for the DVSS and the dV-Trainer. However, most of the metrics collected are different. The standard measurements are shown in Table 6. Like each of the other simulators, there are multiple displays of the performance data for a student. The initial display presented at the completion of an exercise shows a horizontal bar which is colored green, yellow, or red to indicate passing or failing. The magnitude of the bar is a rough measure of the quality of performance. Additional displays show the numeric score and its relative position to a passing threshold.

Table 6. RoSS Scoring Method

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