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The Egyptian Journal of Neurology, Psychiatry and Neurosurgery

Table 3 Lesion to background contrast ratio

From: Role of contrast-enhanced FLAIR MRI in diagnosis of intracranial lesions

Background contrast ratio

Mean±SD

Median (range)

Test of significance

NC FLAIR

0.342±0.25

0.3 (− 0.31 , 1.0)

z = 8.0

p < 0.001*

CE FLAIR

1.08±0.60

0.97 (0.20-3.0)

NC T1

− 0.13±0.15

− 0.13 (− 0.60,0.43)

z = 7.57

p < 0.001*

CE T1

0.40±0.34

0.33 (− 0.05 , 1.2)

  1. CE FLAIR contrast-enhanced FLAIR MRI, NC FLAIR non-contrast-enhanced FLAIR MRI, CE T1 contrast-enhanced T1-weighted image, NC T1 non-contrast-enhanced T1-weighted image. Z: Wilcoxon signed-rank test
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