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Table 3 Association between tumor grade and each of surgical excision and outcome (total n = 20)

From: Surgical planning in patients with brain glioma using diffusion tensor MR imaging and tractography

Parameter High Low Total pa
No % No % No %
Surgical excision
 Subtotal 11 78.6 1 16.7 12 60.0 0.018*
 Total 3 21.4 5 83.3 8 40.0  
Postoperative outcome
 Deteriorated cerebral function 3 21.4 0 0.0 3 15.0 0.521
 Deteriorated motor power 2 14.3 0 0.0 2 10.0 1.000
 Deteriorated visual complaint 1 7.1 0 0.0 1 5.0 1.000
 Headache 2 14.3 1 16.7 3 15.0 1.000
 Improved motor power 5 35.7 2 33.3 7 35.0 1.000
Pre- and postoperative imaging
Preoperative pattern I (not affected) 0 0.0 2 33.3 2 10.0 0.079
  Normalized position and anisotropy 0 0.0 2 33.3 2 10.0  
Preoperative pattern II (displacement) 10 71.4 5 83.3 15 75.0 1.000
Postoperative        
  Normalized position and anisotropy 7 70.0 5 100.0 12 80.0 0.505
  Normalized position and partial FA improvement 3 30.0 0 0.0 3 20.0  
Preoperative pattern III (edematous) 7 50.0 4 66.7 11 55.0 0.642
Postoperative        
  Normalized position and anisotropy 4 57.1 3 75.0 7 63.6 1.000
  Normalized position and partial FA improvement 2 28.6 1 25.0 3 27.3  
  No fibers position or FA improvement 1 14.3 0 0.0 1 0.8  
Preoperative pattern IV (infiltration) 11 78.6 1 16.7 12 60.0 0.018*
Postoperative        
  Normalized position and anisotropy 5 45.5 1 100.0 6 50.0 1.000
  Normalized position and partial FA improvement 4 36.4 0 0.0 4 33.3  
  No fibers position or FA improvement 2 18.1 0 0.0 2 16.7  
Preoperative pattern V (destruction) 4 28.6 0 0.0 4 20.0 0.267
  No identifiable fiber tracts on FA or directional color maps 4 100.0 0 0.0 4 100.0  
  1. No number
  2. *Significant at p <0.05
  3. aFisher exact/Fisher-Freeman-Halton exact test