【摘要】 ①目的　通过对螺旋CT脑血管造影 (SCTA)参数优化组合 ,提高CT脑血管造影的图像质量。②方法　确定增强扫描范围、最佳扫描时间及增强方法。以 2 .5～ 4 .5mL/s流量注射对比剂Ultravist(成人 1.5mL/kg计算 )。③结果　经过对SCTA扫描参数的优化 ,12 0例SCTA不仅可清楚显示动脉瘤的位置、瘤体及瘤颈大小和形态 ,还可以为血管内栓塞治疗提供最佳工作角度。④结论　SCTA扫描参数的优化是提高图像质量的关键更多还原

【Abstract】 Objective To improve the image quality of SCTA by optimizing various parameters. Methods The proper area, time, method of enhanced scan were determined. Ultravist on velocity of 2.5-4.5 mL/s (for adults, 1.5 mL/kg) was injected. Results Clear SCTA images were achieved in 120 patients, with clear pictures of the site, diameter and shape of aneurysm, which could provide precise point of operation for intra-vessel embolism. Conclusion The optimized parameters of SCTA could improve image quality.更多还原