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Table 2 Distribution of audio-vestibular dysfunction symptoms in patients with vascular loop/vascular contact MRI

From: Presence of vascular loop in patients with audio-vestibular symptoms: is it a significant finding? Evaluation with 3-tesla MRI 3D constructive interference steady state (CISS) sequence

MR findings Tinnitus Sensory hear loss (deafness) Vertigo
Symptomatic ear (n = 42) Asymptomatic ear χ2 p Symptomatic ear (n = 34) Asymptomatic ear χ2 p With (n = 64) Without χ2 p
Patient (n = 154) Control (n = 120) Patient (n = 162) Control (n = 120) Patients (n = 132) Control (n = 120)
Vascular loop  
 Grade I 31 (73.8%) 111 (72.1%) 75 (62.5%) 3.79 0.15 25 (73.5%) 115 (71%) 75 (62.5%) 0.72 0.70 45 (70.3%) 88 (66.7%) 75 (62.5%) 2.22 0.33
 Grade II 7 (16.7%) 39 (25.3%) 37 (30.8%) 8 (23.5%) 39 (24%) 37 (30.8%) 18 (28.1%) 37 (28.0%) 37 (30.8%)
 Grade III 4 (9.5%) 4 (2.6%) 8 (6.7%) 1 (3%) 8 (5%) 8 (6.7%) 1 (1.6%) 7 (5.3%) 8 (6.7%)
Vascular contact  
 Type I 22 (52.4%) 111 (72.1%) 53 (44.1%) 0.86 0.65 20 (58.8%) 112 (69.1%) 53 (44.2%) 0.03 1.0 42 (65.6%) 100 (75.7%) 53 (44.2%) 0.77 0.68
 Type II 18 (42.8%) 38 (24.7%) 62 (51.7%) 13 (38.3%) 47 (29%) 62 (51.6%) 20 (31.3%) 31 (23.5%) 62 (51.7%)
 Type III 2 (4.8%) 5 (3.2%) 5 (4.2%) 1 (2.9%) 3 (1.9%) 5 (4.2%) 2 (3.1%) 1 (0.8%) 5 (4.2%)
  1. χ2 Chi square test
  2. Grade I in CPA, Grade II in IAC < 50%, Grade III in IAC > 50%
  3. Type I no contact, Type II contact without nerve angulation, Type III contact with nerve angulation
  4. p p value for comparing between the different groups