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Table 1. Color Tone Changes before and after the MRI Examinations.

From: Multifaceted Evaluation of Ultra-high-field 9.4-T Magnetic Resonance Imaging after Inorganic Tattoos: An Animal Study

Hue Value Chroma L* a* b* ⊿E00
Titanium dioxide Before MRI 1.2 ± 0.9 Y 6.10 ± 0.25 1.30 ± 0.11 62.51 ± 2.50 0.82 ± 0.40 9.41 ± 0.93
0.86
After MRI 1.2 ± 0.2 Y 6.01 ± 0.01 1.25 ± 0.02 61.57 ± 0.11 0.85 ± 0.09 8.98 ± 0.05
Iron oxide yellow Before MRI 9.3 ± 0.0 YR 5.60 ± 0.01 5.51 ± 0.00 56.51 ± 0.11 12.94 ± 0.01 32.90 ± 0.02
3.00
After MRI 9.4 ± 0.1 YR 5.93 ± 0.06 5.32 ± 0.04 59.77 ± 0.66 12.16 ± 0.06 31.64 ± 0.37
Iron oxide red Before MRI 7.7 ± 0.1 R 3.10 ± 0.01 3.51 ± 0.02 31.37 ± 0.14 16.63 ± 0.11 9.51 ± 0.09
0.38
After MRI 7.3 ± 0.1 R 3.13 ± 0.02 3.46 ± 0.01 31.69 ± 0.18 16.49 ± 0.03 9.09 ± 0.03
Iron oxide black Before MRI 3.32 ± 0.10 25.22 ± 0.54 0.65 ± 0.06 0.19 ± 0.14
1.11
After MRI 3.10 ± 0.05 26.34 ± 1.11 0.31 ± 0.25 −0.37 ± 0.40
Ultramarine blue #29 Before MRI 6.1 ± 0.1 PB 2.49 ± 0.13 1.30 ± 0.09 25.96 ± 1.34 −0.70 ± 0.06 −5.81 ± 0.37
2.63
After MRI 5.7 ± 0.1 PB 2.64 ± 0.01 2.01 ± 0.02 27.57 ± 0.12 −1.08 ± 0.03 −8.88 ± 0.07
Chromium oxide green #7 Before MRI 7.0 ± 0.5 GY 4.14 ± 0.13 2.53 ± 0.29 42.42 ± 1.43 −8.46 ± 1.18 11.88 ± 0.88
1.35
After MRI 7.7 ± 0.2 GY 4.24 ± 0.03 2.74 ± 0.09 43.37 ± 0.33 −9.62 ± 0.37 12.14 ± 0.27
D&C red #7 Before MRI 5.4 ± 0.1 R 4.18 ± 0.09 8.11 ± 0.25 42.45 ± 0.97 33.32 ± 1.11 17.81 ± 0.37
0.87
After MRI 5.3 ± 0.3 R 4.11 ± 0.05 8.45 ± 0.08 41.75 ± 0.53 34.79 ± 0.26 18.20 ± 0.59
Carbon black Before MRI 3.32 ± 0.10 34.12 ± 1.00 0.38 ± 0.03 0.34 ± 0.12
1.91
After MRI 3.10 ± 0.05 31.78 ± 0.57 0.33 ± 0.04 0.67 ± 0.09
Control Before MRI 2.4 ± 0.1 YR 5.87 ± 0.05 2.13 ± 0.03 60.29 ± 0.48 5.59 ± 0.13 9.56 ± 0.08
0.90
After MRI 3.3 ± 0.6 YR 5.79 ± 0.09 2.03 ± 0.11 59.69 ± 0.78 5.19 ± 0.44 10.14 ± 0.76
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