Table 1 Spectrophotometric values for different color spaces (CIE L*a*b*, XYZ, L*c*h*), dominant wavelength (nm), and % reflectance at 700 nm in the different steatosis groups.

From: Surface color spectrophotometry in a murine model of steatosis: an accurate technique with potential applicability in liver procurement

Color space axis

Control

S1

S2–3

p value

L*

39.8 (36.9–42.9)

47.4 (45.6–50.5)

61.0 (58.8–62.4)

<0.001

b*

12.2 (11.0–13.8)

16.0 (14.8–16.9)

19.9 (19.2–20.7)

<0.001

X

11.5 (10.0–13.6)

17.1 (16.0–19.6)

29.4 (27.3–30.8)

<0.001

Y

11.1 (9.5–13.1)

16.3 (15.0–18.8)

29.3 (26.8–30.9)

<0.001

Z

7.9 (7.1–9.1)

10.8 (10.1–12.4)

19.3 (17.4–20.6)

<0.001a

c*

14.9 (13.5–15.9)

18.6 (17.6–19.7)

20.9 (20.1–21.9)

<0.001

R

113.5 (107–123)

137 (134–146)

170.5 (167–174)

<0.001

B

74 (71–79)

86 (83–92)

112 (106–117)

<0.001

G

89 (82–96)

106.5 (102–114)

142 (136–146)

<0.001

C

47 (45–49)

41 (38–42)

33 (32–34)

<0.001

M

58 (56–60)

54 (51–56)

41 (40–44)

<0.001

Y

66 (64–67)

65 (64–66)

59 (57–62)

<0.001b

K

29 (25–34)

19 (15–21)

4.5 (3–6)

<0.001a

h*

57.6 (53.3–60.5)

60.0 (56.9–62.4)

72.0 (69.9–73.0)

<0.001b

Dominant wavelength

582.5 (581.3–584.1)

581.7 (580.6–583.2)

577.3 (576.9–578.1)

<0.001b

% reflectance at 700 nm

24.4 (22.1–28.9)

36.3 (33.7–40.7)

55.2 (52.7–56.9)

<0.001

  1. Values are expressed as median (interquartile range). All p values were calculated using mixed-effects linear regression.
  2. ap = 0.002 for control vs. S1 and <0.001 for S2–3 against either control or S1.
  3. bp > 0.05 for control vs. S1 and <0.001 for S2–3 against either control or S1.
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