文档介绍：16层螺旋CT头颈联合CTA成像技术优化
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作者:刘玉涛彭秀斌杜中立陈海东毛俊
【摘要】目的探讨16层螺旋CT头颈联合CTA最佳扫描技术方法。方法使用16层螺旋CT对31例头颈联合CTA成像,选用两种参数进行扫描:A组15例患者选用螺距为1、120mAs,扫描方向自主动脉弓至颅顶;、160mAs,扫描方向自颅顶至主动脉弓,其他参数相同。评估两种方法重建的血管像和血管的强化值。结果 B组重建的图像优于A组,检测点颈动脉起始段,大脑中动脉强化值B组高于A组,直窦强化值B组低于A组。结论 16层螺旋CT联合CTA成像时,,160mAs改变扫描方向的方法,可重建出更优质的血管图像。
【关键词】体层摄影术;X线计算机;血管造影术;图像处理;计算机辅助
[Abstract] Objective To investigate the scanning technique puted tomography angiography(CTA) of intracranial and cervical arteries in 16-slice spiral CT. Methods The study included 31 patients. The scaning with 16-slice spiral CT CT was performed for 15 patients with the technique of A, which pitch:1, 120mAs from aortic arch to cerebral top;And 16 patients with the technique of B which pitch:, 160mAs from cerebral top to aortic arch. We assess image quality and the enhancement of monitor spots(internal carotid artery,middle cerebral artery and straight sinuses). pared the technique, To assess of image and enhance monitor spot of internal carotid artery and middle cerebral artery were well with A than B; A was little than B in enhance of straight sinuses. Conclusion Adopt scanning paremeter of pitch was , 160mAs and scanning direction with 16-slice spiral CT acquire very quality images.
[Key words] tomography; X-puted; angiography; image processing; computer assisted
16层螺旋C