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Table 2 Relation between meningioma operative vascularity and different MRI parameters

From: Can magnetic resonance imaging predict preoperative consistency and vascularity of intracranial meningioma?

MRI parameters Meningioma Operative vascularity p
Highly vascular
(n = 27)
Intermediate vascularity
(n = 6)
Hypo vascular
(n = 7)
No % No % No %
T2 signal        
 Hyperintense 18 66.7 1 16.7 2 28.6 p = 0.003*
 Isointense 9 33.3 4 66.7 2 28.6
 Hypointense 0 0.0 1 16.7 3 42.9
Significance between groups p1 = 0.027*, p2 = 0.006*, p3 = 0.479  
Diffusion        
 Free diffusion 2 7.4 0 0.0 0 0.0 p = 0.174
 Iso diffusion 5 18.5 4 66.7 2 28.6
 Restricted 20 74.1 2 33.3 5 71.4
ADC (× 10−5cm2/s)     
 Min.–Max 0.60–1.30 0.70–1.20 0.70–1.20 p = 0.244
 Mean ± SD 0.89 ± 0.21 1.03 ± 0.23 0.85 ± 0.18
 Median 0.85 1.15 0.80
ASL        
 Hyper perfusion 27 100.0 0 0.0 0 0.0 p < 0.001*
 Iso perfusion 0 0.0 6 100.0 0 0.0
 Hypo perfusion 0 0.0 0 0.0 7 100.0
Significance between groups p1 < 0.001*, p2 < 0.001*, p3 = 0.001*  
nCBF     
 Min.–Max 2.10–14.20 1.50–1.60 0.70–0.90 p < 0.001*
 Mean ± SD 3.93 ± 2.73 1.55 ± 0.04 0.82 ± 0.09
 Median 2.50 1.55 0.87
Significance between groups p1 = 0.002*, p2 < 0.001*, p3 = 0.313  
  1. ADC, apparent diffusion coefficient; ASL, arterial spin labeling; n, number of patients; nCBF, normalized cerebral blood flow; p, p value for association between different categories; p1, p value for association between hyper vascular and intermediately vascular; p2, p value for association between hyper vascular and hypo vascular; p3, p value for association between Intermediately vascular and hypo vascular meningioma; SD, standard deviation
  2. *Statistically significant at p ≤ 0. 05