Volumetric assessment of hepatic grafts using a light detection and ranging system for 3D scanning: Preliminary data

Table 1 Donor demographics.

N	Gender	Age (yr)	Cause of death	Graft steatosis (%)	Weight (kg)	Height (m)	BMI (kg/m2)	BSA (m2)
1	Female	59	IBI	> 10	60	1.6	23.43	1.76
2	Male	32	IBI	> 10	75	1.7	25.95	1.88
3	Male	64	SH	> 10	85	1.75	27.75	2.03
4	Female	63	ICH	60	70	1.6	27.34	2.06
5	Female	46	ICH	5	90	1.7	31.14	2.41
6	Female	54	ICH	20	120	1.75	39.18	1.63
7	Male	49	IBI	> 10	75	1.83	22.39	1.95

N: Donor number; BMI: Body mass index; BSA: Body surface area; IBI: Ischemic brain injury; SB: Subarachnoid haemorrhage; ICH: Intracerebral haemorrhage.

Table 2 Results

N	Graft weight (g)	LIDAR volume (mL)	Vauthey volume (mL)	LIDAR estimated graft mass (g)	LIDAR error (g)	LIDAR error (%)
1	1202	1179	1275.04	1261.53	59.53	4.95
2	1623	1490	1590.52	1594.30	-28.70	-1.77
3	2201	2090	1781.61	2236.30	35.30	1.60
4	1332	1248	1440.86	1335.36	3.36	0.25
5	1227	1141	1818.15	1220.87	-6.13	-0.50
6	1074	1040	2266.36	1112.80	38.80	3.61
7	1623	1482	1680.03	1585.74	-37.26	-2.30

Estimated graft mass = Light detection and ranging (LIDAR) volume mL × 1.07 gr/mL. The LIDAR error is calculated by subtracting the LIDAR estimated liver mass from the actual mass (weight) of the grafts. N: Donor number; g: Grams; LIDAR: Light detection and ranging.

Table 3 ANOVA: Single factor

Source of Variation	SD	df	MS	F	F crit
Between groups	225616.3945	2	112808.1972	0.861884735	3.554557
Within groups	2355938.641	18	130885.4801
Total	2581555.035	20

SD: Standard deviation; df: Degrees of freedom; MS: Mean squares; F crit: F critical.