|
Abstract [Objective] To explore the value of dual-source CT angiography (DSCTA ) in the diagnosis of vertebral artery sulcus ring .[Methods]Clinical data of 62 patients with vertebral artery sulcus ring diagnosed by DSCTA were col-lected .The types of whole-ring-type vertebral artery sulcus ring were analyzed .The diameter of vertebral artery was measured .[Results] The types of 62 patients with vertebral artery included Ⅳ type in 38 patients(61 .3% ) in which 25 patients were bilateral whole-ring type and 13 patients were unilateral whole-ring type(8 patients with right side and 4 pa-tients with left side) ,Ⅲ type in 6 patients (9 .7% ) which were bone breaking in curve bone bridge arch with both beak-like sides ,typeⅠandⅡ in 18 patients(29 .0% ) in which 3 patients were type I anterior semi-ring and 15 patients were typeⅡ posterior semi-ring .The upper and lower diameters of whole-ring type vertebral artery sulcus ring were 3 .1~8 .2 (4 .8 ± 0 .3)mm and anteroposterior diameters were 4 .2~9 .1(7 .10 .3)mm .The diameter of vertebral artery in atlas ver-tebral artery sulcus ring was 1 .8~5 .9(3 .7 ± 0 .8)mm .Local stenosis of vertebral artery was found in 15 patients ,and the stenosis rate was 10% ~30% .[Conclusion]DSCTA can accurately display the shape of atlas vertebral artery sulcus ring and stenosis caused by vertebral artery entrapment .
|
|
|
|
|
|
2014, Vol. 31 
