Farrés M T, Grabenwöger F, Magometschnig H, Trattnig S, Heimberger K, Lammer J
Department of Radiology, Institut Gustave Roussy, Villejuif, France.
Neuroradiology. 1996 Nov;38(8):738-43. doi: 10.1007/s002340050339.
The origin of the vertebral artery may be difficult to show on sonography or conventional angiography. Our aim was to evaluate the accuracy of CT angiography (CTA) in detecting arteriosclerotic changes in the first segment (V1) of the vertebral artery. We performed CTA and intra-arterial digital subtraction angiography (DSA) on 24 patients with vertebrobasilar insufficiency. The ostium and the V1 segment were examined. Stenosis was assessed on a three-grade scale, and calcification and the degree of kinking were recorded. DSA and CTA results were compared. The ostium of the artery was seen in all cases on CTA and in 33 of 47 cases with DSA. All ostial stenoses diagnosed on DSA were seen with CTA. CTA revealed 4 stenoses in cases in which angiography proved inadequate, 11 zones of calcification and 5 cases of luminal reduction due to calcified plaques undetected on DSA. In the V1 segment DSA and CTA showed 3 stenoses, 9 cases of kinking, 1 of coiling and 4 stenoses due to kinking. CTA also demonstrated 4 additional stenoses, 2 cases of kinking and 3 stenoses due to kinking.
椎动脉的起源在超声检查或传统血管造影上可能难以显示。我们的目的是评估CT血管造影（CTA）检测椎动脉第一段（V1）动脉硬化改变的准确性。我们对24例椎基底动脉供血不足的患者进行了CTA和动脉内数字减影血管造影（DSA）。对动脉开口和V1段进行了检查。狭窄按三级标准进行评估，并记录钙化和扭曲程度。比较了DSA和CTA的结果。CTA在所有病例中均可见动脉开口，DSA在47例中的33例可见。DSA诊断的所有开口狭窄CTA均可见。CTA在血管造影显示不充分的病例中发现了4处狭窄、11处钙化区域以及5例因DSA未检测到的钙化斑块导致的管腔狭窄。在V1段，DSA和CTA显示3处狭窄、9例扭曲、1例盘绕以及4例因扭曲导致的狭窄。CTA还显示了另外4处狭窄、2例扭曲以及3例因扭曲导致的狭窄。
