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Table 2 Summary statistics for mean syrinx perpendicular dimensions (cm2) in each dorsal quadrant

From: MRI characteristics for “phantom” scratching in canine syringomyelia

Spinal segment Mean SD Median Min Max Two sample test (p=) SAMPLE SIZE
C2 LQ       
 SR 0.0248 0.0153 0.0256 0.0025/0.0450 0.121 6
 NSR 0.0428 0.0194 0.0467 0.0217/0.0600 3
C2 RQ  
 SR 0.0119 0.0136 0.0069 0.0025/0.0313 0.032 4
 NSR 0.0425 0.0152 0.0350 0.0325/0.0600 3
C3 LQ  
 SR 0.1020 0.0480 0.0944 0.0103/0.1789 0.001 15
 NSR 0.0331 0.0290 0.0175 0.0050/0.0943 14
C3 RQ  
 SR 0.1021 0.0236 0.1033 0.0550/0.1369 <0.001 15
 NSR 0.0274 0.0220 0.0171 0.0063/0.0743 14
C4 LQ  
 SR 0.1122 0.0571 0.1060 0.0200/0.2220 <0.001 19
 NSR 0.0457 0.0420 0.0233 0.0090/0.1250 14
C4 RQ  
 SR 0.1172 0.0601 0.1000 0.0222/0.2400 <0.001 19
 NSR 0.0447 0.0400 0.0272 0.0085/0.1233 14
C5 LQ  
 SR 0.1013 0.0607 0.0957 0.0063/0.2275 <0.001 15
 NSR 0.0212 0.0218 0.0125 0.0050/0.0740 12
C5 RQ  
 SR 0.0993 0.0501 0.0900 0.0242/0.1925 <0.001 15
 NSR 0.0225 0.0230 0.0135 0.0030/0.0780 12
C6 LQ  
 SR 0.0876 0.0535 0.0930 0.0200/0.1625 0.002 8
 NSR 0.0089 0.0041 0.0100 0.0038/0.0146 5
C6 RQ  
 SR 0.0653 0.0478 0.0500 0.0200/0.1300 0.009 8
 NSR 0.0132 0.0088 0.0100 0.0050/0.0250 5
C7 LQ       
 SR 0.1000 0.0652 0.1000 0.0100/0.1900 n/a 5
 NSR 0.0133 0.0133 0.0133/0.0133 1
C7 RQ       
 SR 0.0448 0.0249 0.0450 0.0100/0.0800 n/a 5
 NSR 0.0200 0.0200 0.0200/0.0200 1
C8 LQ  
 SR 0.3450 0.3450 0.3450/0.3450 n/a 1
 NSR       0
C8 RQ  
 SR 0.0600 0.0600 0.0600/0.0600 n/a 1
 NSR       0
  1. A figure representing the syrinx cavity area was obtained by multiplying the perpendicular dimensions of the cavity in each dorsal quadrant in each transverse MRI section. Subsequently a figure representing the dorsal syrinx cavity size for each spinal cord segment was obtained by calculating the mean of all the perpendicular dimension areas for each transverse MRI section for each segment for each dog. C – cervical (see Table 1) RQ – right dorsal quadrants LQ – left dorsal quadrants SR – scratcher, NSR – non-scratcher. C1 Not included due to sample sizes. Blank cell means that there was no syrinx at this site. Bold font - p values indicates a significant result (p < 0.05)