Research Article
Comparison of Intravoxel Incoherent Motion Diffusion-Weighted MR Imaging and Arterial Spin Labeling MR Imaging in Gliomas
Table 4
Histogram parameters of white matter from the ASL and MB-DWI from histogram analysis as well as ROC analysis in HGG and LGG (mean ± SD).
| | | White matter | HGG | LGG | Test type | |
| | CBF | Mean (mL/100 g/min) | 25.25 ± 3.46 | 27.64 ± 8.21 | mw | 0.733 | | Median (mL/100 g/min) | 25.69 ± 5.15 | 27.33 ± 7.48 | mw | 0.649 | | Maximum (mL/100 g/min) | 38.62 ± 5.23 | 42.91 ± 12.49 | mw | 0.955 | | Minimum (mL/100 g/min) | 13.82 ± 5.44 | 15.91 ± 7.79 | mw | 0.459 | | 90th percentile (mL/100 g/min) | 33.62 ± 4.75 | 35.18 ± 10.94 | mw | 0.459 | | Standard deviation (mL/100 g/min) | 6.77 ± 3.62 | 6.14 ± 2.39 | mw | 0.331 | | Skewness | 2.37 ± 7.86 | 2.32 ± 0.47 | mw | 0.776 | | Kurtosis | 2.38 ± 0.45 | 2.86 ± 0.55 | mw | 0.03 |
| | Mean (10−3 mm2/s) | 2.5 ± 0.18 | 2.52 ± 0.29 | mw | 0.691 | | Median (10−3 mm2/s) | 2.44 ± 0.18 | 2.48 ± 0.27 | mw | 0.91 | | Maximum (10−3 mm2/s) | 3.72 ± 0.62 | 3.79 ± 0.65 | mw | 0.733 | | Minimum (10−3 mm2/s) | 1.76 ± 0.16 | 1.82 ± 0.19 | tt | 0.429 | | 90th percentile (10−3 mm2/s) | 2.99 ± 0.34 | 2.95 ± 0.26 | tt | 0.992 | | Standard deviation (10−3 mm2/s) | 0.42 ± 0.11 | 0.39 ± 0.09 | tt | 0.453 | | Skewness | 0.68 ± 0.36 | 0.75 ± 0.32 | tt | 0.627 | | Kurtosis | 3.49 ± 1.24 | 3.88 ± 1.2 | mw | 0.459 |
| | Mean (10−3 mm2/s) | 0.41 ± 0.02 | 0.41 ± 0.02 | tt | 0.801 | | Median (10−3 mm2/s) | 0.4 ± 0.02 | 0.41 ± 0.02 | tt | 0.473 | | Maximum (10−3 mm2/s) | 0.47 ± 0.03 | 0.49 ± 0.04 | tt | 0.161 | | Minimum (10−3 mm2/s) | 0.35 ± 0.03 | 0.33 ± 0.02 | tt | 0.083 | | 90th percentile (10−3 mm2/s) | 0.44 ± 0.03 | 0.45 ± 0.02 | tt | 0.385 | | Standard deviation (10−3 mm2/s) | 0.03 ± 0.01 | 0.04 ± 0.01 | mw | 0.252 | | Skewness | 0.11 ± 0.63 | −0.11 ± 0.34 |
tt | 0.308 | | Kurtosis | 2.56 ± 0.66 | 2.47 ± 0.41 | tt | 0.707 |
| | Mean (10−3 mm2/s) | 0.32 ± 0.03 | 0.29 ± 0.01 | mw | 0.207 | | Median (10−3 mm2/s) | 0.3 ± 0.02 | 0.29 ± 0.01 | mw | 0.608 | | Maximum (10−3 mm2/s) | 0.4 ± 0.08 | 0.37 ± 0.04 | mw | 0.331 | | Minimum (10−3 mm2/s) | 0.25 ± 0.02 | 0.26 ± 0.01 | mw | 0.82 | | 90th percentile (10−3 mm2/s) | 0.37 ± 0.08 | 0.33 ± 0.03 | mw | 0.15 | | Standard deviation (10−3 mm2/s) | 0.04 ± 0.03 | 0.02 ± 0.01 | mw | 0.207 | | Skewness | 0.54 ± 0.47 | 0.47 ± 0.76 | tt | 0.785 | | Kurtosis | 3.07 ± 1.41 | 3.41 ± 0.84 | mw | 0.106 |
| | ADC | Mean (10−3 mm2/s) | 0.53 ± 0.03 | 0.53 ± 0.01 | tt | 0.857 | | Median (10−3 mm2/s) | 0.53 ± 0.03 | 0.53 ± 0.02 | tt | 0.988 | | Maximum (10−3 mm2/s) | 0.64 ± 0.08 | 0.62 ± 0.05 | tt | 0.64 | | Minimum (10−3 mm2/s) | 0.46 ± 0.02 | 0.45 ± 0.02 | tt | 0.293 | | 90th percentile (10−3 mm2/s) | 0.59 ± 0.08 | 0.58 ± 0.05 | tt | 0.826 | | Standard deviation (10−3 mm2/s) | 0.04 ± 0.02 | 0.04 ± 0.02 | mw | 0.82 | | Skewness | 0.45 ± 0.8 | 0.13 ± 0.57 | tt | 0.278 | | Kurtosis | 3.28 ± 1.47 | 2.78 ± 0.74 | mw | 0.392 |
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Statistically significant values are presented in bold font. mw: Mann-Whitney test, tt: Student’s -test. LGG: low grade gliomas, WM: contralateral semioval center. AUC: area under the curve.
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