Geometric parameters of vertebrobasilar artery for judging whether vertebral artery provide cross blood supply of posterior cerebral artery blood supply area
10.13929/j.issn.1003-3289.2025.06.010
- VernacularTitle:椎基底动脉几何参数用于判断椎动脉是否为大脑后动脉供血区提供交叉供血
- Author:
Xuemei LI
1
;
Yang TANG
1
;
Jiamei ZHAO
1
;
Siqi HU
1
;
Wei XIE
1
;
Zongfang LI
1
Author Information
1. 昆明医科大学附属第一医院放射科,云南 昆明 650000
- Publication Type:Journal Article
- Keywords:
vertebral artery;
basilar artery;
magnetic resonance imaging;
arterial spin labeling;
prospective studies
- From:
Chinese Journal of Medical Imaging Technology
2025;41(6):892-898
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the value of geometric parameters of vertebrobasilar artery(VBA)for judging whether vertebral artery(VA)provide cross blood supply of posterior cerebral artery(PCA)blood supply area.Methods MR T2-fluid attenuated inversion recovery(FLAIR),3D time of flight(TOF)MR angiography(MRA)and territorial arterial spin labeling(t-ASL)images of 244 healthy adults were prospectively acquired.The angles between left VA(LVA)or right VA(RVA)and basilar artery(BA)were measured,and the sum and difference between the two angles were calculated(referred to as the sum of VA angles and the difference of VA angles),and the differences of diameters of LVA and RVA were measured and calculated(referred to as the difference of VA diameters).VA perfusion distribution type in PCA blood supply area were observed,and those with type Ⅲ or Ⅵ were enrolled in cross group,while those with type Ⅱ or Ⅴ were enrolled in non-cross group,respectively.The geometric parameters of VBA were compared between groups.Receiver operating characteristic(ROC)curve of parameters being significant different between groups were drawn,and the efficacy of these parameters for judging whether VA provide cross blood supply of PCA area were evaluated.Results There were 34 subjects in cross group and 75 in non-cross group.The sum of VA angles and the difference of VA angles in cross group were both larger than those in non-cross group(both P＜0.05),while the difference of VA diameters were not significantly different between groups(P＞0.05).The AUC of the difference of VA angles for judging whether VA provide cross blood supply of PCA area was 0.676(P＜0.05),while of the sum of VA angles was 0.598(P=0.103).Conclusion The angle differences of LVA and RVA with BA had certain application value for judging whether VA provide cross blood supply of PCA area.
