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Table 3 Associations between an abnormal origin and an abnormal penetration of the VA into the transforamen

From: Are the anomalous vertebral arteries more hypoplastic?: retrospective linear mixed model approach

 

MRA

Total

V2 anomaly (+)

V2 anomaly (−)

CTA

V1 anomaly (+)

8 (1.7%)

3 (0.6%)

11 (2.3%)

V1 anomaly (−)

19 (4.0%)

446 (93.7%)

465 (97.7%)

Total

 

27 (5.7%)

449 (94.3%)

476 (100%)

  1. P for chi-square < 0.001
  2. V1 VA with aortic origin in V1 segment, V2 VA with an abnormal entrance into the C6 transverse foramen