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作者评价三维CT血管成像(3D-CTA)在诊断13例临床上怀疑有蛛网膜下腔出血(SAH)后血管痉挛的价值,其中12例常规血管造影显示有颅内动脉瘤,10例作了急诊夹闭。用螺旋CT机先作普通检查,层厚10mm,间隔10mm,随后用螺旋CT扫描,参数为:120kV,175mA,1s,层厚2mm,床速2mm/s(螺距为1:1),采集时间31s,视野21cm。在枕大孔后缘平面开始扫描,以2ml/s静脉团注非离子型对比剂100ml,扫描前延迟25s。以1mm间隔
The authors evaluated the value of three dimensional CT angiography (3D-CTA) in diagnosing vasospasm in 13 clinically suspected subarachnoid hemorrhages (SAH), of which 12 had conventional intracranial aneurysms and 10 had intracranial aneurysms Emergency Closure. Spiral CT machine for the first ordinary examination, layer thickness 10mm, interval 10mm, followed by spiral CT scan parameters: 120kV, 175mA, 1s, layer thickness 2mm, bed speed 2mm / s (pitch 1: 1), the acquisition time 31s, 21cm field of vision. On the trailing edge of the occipital foramen plane, a scan was started with a bolus of non-ionic contrast agent (2 ml / s) and a delay of 25 s before scanning. At 1mm intervals