The MRCP images will be transferred into a 3D VR rendering software (Specto VR TM) for each patient. Residents will have the opportunity to use the virtual reality environment the day before surgery until a sufficient understanding of the anatomy is achieved.

Controls will have regular access to the conventional MRCP images.

In the Virtual Reality (VR) study arm, a VR software (Specto VRTM, version 4.0, Diffuse Ltd, Heimberg, Switzerland) will be used to display volumetric MRCP data using a tethered head-mounted display (HMD) prior to the operation. Specto uses volume rendering at 180 frames/sec to visualize the medical data in an immersive fashion in the VR environment and allows for viewing of the 3D reconstructed 3D imaging with 360° free movement. Each participant will perform a procedure with VR training and one with conventional preparation (MRCP).

For the global assessment of laparoscopic skills, the Global Operative Assessment of Laparoscopic Skills (GOALS) will be used. Evaluation will be performed by the attending surgeon. The GOALS is a 5 item rating scale and the items are scored using a 5-point Likert scale where "1" represents the lowest level of performance, and "5" is considered ideal performance. The total score for the global rating scale is the sum of the scores for each of the 5 items for a maximum total score of 25.

For the global assessment of laparoscopic skills, the Global Operative Assessment of Laparoscopic Skills (GOALS) will be used. Evaluation will be performed by the resident (self-assessment).

Length of the total hospital stay (days)

All postoperative deviations from the normal expected course graded according to the Accordion classification and the comprehensive complication index.