Klinkert A, Gangi A, Arhan J M, Zollner G, Beaujeux R, Rimmelin A, Schlund C, Kastler B, Dietemann J L
Service de Radiologie B, Hôpitaux Universitaires, Hôpital Civil, Strasbourg.
J Radiol. 1995 Aug;76(8):491-6.
Vertebral artery dissection is the first diagnosis that must be suspected by a 40 years old patient with posterior fossa ischemic signs. CT data from six cases of spontaneous or post-traumatic vertebral artery dissections are reviewed. Cervical CT is performed after contrast medium injection from C7 to C0 with 1.5 mm thick slices and a 2 mm gap or with a spiral mod including millimetric reconstruction. The enhancement of the vascular wall, the hypodense hematoma surrounding a stenotic and eccentric lumen, and the enlargement of the artery are typical for a vertebral artery dissection. CT findings were correlated with angiography that is still considered to be the gold standard for this diagnosis. Among noninvasive technics including MRI, duplex scanning and CT, the latter appears very accurate to diagnose vertebral artery dissection.
椎动脉夹层是一名有后颅窝缺血体征的40岁患者必须首先怀疑的诊断。回顾了6例自发性或创伤后椎动脉夹层的CT数据。颈部CT在从C7至C0注入造影剂后进行，层厚1.5mm，层间距2mm，或采用螺旋模式并进行毫米级重建。血管壁强化、狭窄且偏心管腔周围的低密度血肿以及动脉增粗是椎动脉夹层的典型表现。CT表现与血管造影结果相关，血管造影仍被认为是该诊断的金标准。在包括MRI、双功扫描和CT在内的非侵入性技术中，CT在诊断椎动脉夹层方面显得非常准确。
