Can stereoscopic technologies build better surgeons? The effects of stereoscopy and spatial visualization ability on laparoscopic performance in surgical residents (536.12)

Abstract

Acquisition of surgical skill is a multifaceted process, in which practice, and innate human factors such as spatial visualization ability (Vz) play key roles. Elevated Vz (HVz) is thought to facilitate surgical skill acquisition. The benefit of viewing laparoscopic skills in stereo (3D) is undetermined in experienced populations, and may show differing effects between those of variable Vz. The Vz of surgical residents will be evaluated using a Mental Rotations Test, and then surgical skill will be measured via the McGill Inanimate System for Training and Evaluation of Laparoscopic Skills (MISTELS). Participants will complete the MISTELS tasks in both 3D and monoscopic format (2D) while being randomly assigned to complete the task in either 2D first or 3D first. Scoring of the MISTELS is based on time, completion and efficiency. It is hypothesized that HVz individuals will score higher than LVz counterparts. Prior research in novice subjects suggests that the effects of 3D and 2D viewing yields variable results based on an individual’s Vz, such that LVz trainees may benefit more than HVz from 3D viewing after a period of experience. If 3D viewing enhances surgical skill in our subjects, it may suggest future use in laparoscopic training curricula. Comparison of current results with those of novice subjects may suggest the intervening effects of experience on the effect of Vz and/or viewing modality.