Study On CTA Of Cervical Spondylotic Arteriopathy

Objective:To find the correlation between cervical vertigo and transverse foramen stenosis and vertebral artery setnosis,we use CTA to measure the diameter of vertebral artery and transverse foramen for the people who had cervical spondylosis,and then try to position the cervical segment of transverse foramen stenosis and vertebral artery setnosis which is associated with cervical vertigo. Methods:Choosing the people that from rehabilitation medicine outpatient in our hospital between December 2013 and June 2014,which is consist of 30 cases of CSA(group A)、33 cases of other types of cervical spondylosis(group C) and 28 cases of normal control people(group B).After getting the CTA images,we try to choose complete symmetrical section of transverse foramen from transection images of C1~C6. If each side of transverse foramen doesn’t display on the same level and at the same time,then we will measure the transerse foramen on different levels.The diameter of transverse foramen and vertebral artery in both side will be measured and all the records can be read on the CT screen. Results:(1)The diameter of transverse foramen of all groups on the left side were greater than the right side,there were not statistical significance(P>0.05).The difference of transverse foramen diameter in different levels of group C had statistical significance(P = 0.0034),and the rest of ipsilateral transverse foramen in different levels of other two groups had not statistical significance(P > 0.05).The transverse foramen diameter of C2~C6 levels of group A were less than group B and the difference was statistically significant(P < 0.05). Transverse foramen diameter on both sides of group C were less than group B.All the differences of all levels on left side were statistically significant except C3 and all the differences of all levels on right side were statistically significant except C1.There were no statistical significances on all levels on both sides between group A and group C.(2) The vertebral artery dianmeter of C1~C6 levels of group A were less than group B and the difference was statistically significant(P < 0.05). The vertebral artery dianmeter of C1~C6 levels on left side in group C were less than group B and the difference was statistically significant(P < 0.05). There were statistical significances of vertebral artery dianmeter on C3、C5、C6 level on right side between group C and group B(P < 0.05). There were statistical significances of vertebral artery dianmeter on all levels on both sides between group A and group C(P < 0.05).(3)The transverse foramen diameter are greater than vertebral artery dianmeter in all groups.And the differences between transverse foramen diameter and vertebral artery dianmeter on both sides in all groups were statistically significant(P < 0.0001).(4)The correlation coefficent between CSA and vertebral artery setnosis on C1 ~C6 level were 0.2583, 0.2686, 0.3243, 0.2965, 0.4099, 0.4402, which were statistically significant(P < 0.05).Obviously vertebral artery setnosis was correlated with CSA and C5、C6 level got a high correlation. The correlation coefficent between CSA and transverse foramen stenosis on C1 ~C6 level were 0.2875, 0.3126, 0.2499, 0.3717, 0.3923, 0.4234, which were statistically significant(P < 0.05).Obviously transverse foramen stenosis was correlated with CSA and C4、C5、C6 level got a high correlation. Conclusion:CSA was correlated with transverse foramen stenosis and the correlation between CSA and C4、 C5、C6 level was significantly high. CSA was correlated with vertebral artery setnosis and C5、C6 level got a high correlation. And it will provede an important theoretical basis for the pathogenesis and diagnosis of CSA.