Table 3.

Overview of the Mean, Maximum, and Minimum Average (in millimeters) Between the Location of Each Artery, Detected by Duplex Ultrasound, and the Location Drawn on the Patient’s Face, Based on the Projected Augmented Reality Image

	Left side of the face									Right side of the face									Bilateral									Total
	Fa	IL	SL	Ang	LN	DN	STr	SO	ST	Fa	IL	SL	Ang	LN	DN	STr	SO	ST	Fa	IL	SL	Ang	LN	DN	STr	SO	ST
Number of visualized arteries	15	5	10	15	14	4	19	11	20	15	2	8	18	11	5	18	6	20	30	7	18	33	25	9	37	17	40	216
Mean average (mm)	0.73	0.00	0.00	0.53	0.29	0.50	0.32	0.36	0.90	0.47	0.00	0.63	0.33	0.09	0.00	0.11	0.00	0.35	0.60	0.00	0.28	0.42	0.20	0.22	0.22	0.24	0.63	0.31
Maximum average (mm)	3	0	0	3	2	2	2	2	5	3	0	3	2	1	0	2	0	3	3	0	3	3	2	2	2	2	5	5
Minimum average (mm)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Standard deviation (SD)	1.28	0.00	0.00	0.99	0.73	1.00	0.75	0.81	1.68	0.99	0.00	1.19	0.77	0.30	0.00	0.47	0.00	0.88	1.13	0.00	0.83	0.87	0.58	0.67	0.63	0.66	1.35	0.66

“Number of visualised arteries” = the number of patients in which a specific artery was visualised on the MRI and augmented reality (AR) image; “mean average” = the mean average deviation between the AR-location of an artery and the location determined by ultrasound (US); “maximum average” = the maximum deviation between the AR-location of an artery and the location determined by ultrasound (US) - “minimum average” = the minimum deviation between the AR-location of an artery and the location determined by ultrasound (US).

Ang, angular artery; DN, dorsal nasal artery; Fa, facial artery; IL, inferior labial artery; LN, lateral nasal artery; SL, superior labial artery; SO, supraorbital artery; ST, superficial temporal artery; STr, supratrochlear artery.