Table 2.

Task completion times and task completion rate.

Task		Mean (SD), in seconds	Unassisted completion rate, %
Bosc
	Selecting the image	4 (1.12)	100
	Selecting the square tool	6.36 (3.84)	100
	Moving sliders to optimal position	154.57 (46.89)a	0
	Selecting the annotation tool	133.5 (55.10)a	0
	Marking the tumor	17.5 (17.14)	88
Medical Holodeck
	Selecting the heart	8.13 (8.33)	75
	Rotate the model using touch	15.83 (9.32)	96
	Find and use 1 cut plane	23.13 (17.31)	75
	Remove cut plane	42.88 (22.91)	25
	Using 2 cut planes	22.5 (11.73)	100
	Turn on and off ring filters	86.13 (45.74)	25
	Adjust resolution to 400-600 on the outermost ring filter and turn off other ring filters	60.75 (54.38)	50

^aCompleted with assistance.