Xu Yan, Wen Liang, Han Dan, Ma Cun-wen
First Affiliated Hospital, Kunming Medical College, Kunming 650032, China.
Zhongguo Yi Xue Ke Xue Yuan Xue Bao. 2010 Dec;32(6):699-703. doi: 10.3881/j.issn.1000.503X.2010.06.022.
To investigate the advantages and disadvantages of dual energy with dual-source computed tomography (CT) in cerebral angiography by comparing those of neuro-digital subtraction angiography (Neuro-DSA) .
Totally 300 patients with normal CT angiography (CTA) images underwent dual energy CT angiography (DE-CTA groups, n=200) and Neuro-DSA scan (Neuro-DSA groups, n=100) using dual source CT. The comparison of two scan approaches was based on image quality, radiation does, post-processing methods, and duration of scanning and subtraction.
The image quality of intracranial blood vessels in DE-CTA group showed no significant difference with that in Neuro-DSA group (P>0.05) , while the number of Grade I images was significantly higher than those of other three grades (P<0.01) . However, the effect of the skull base bone removal with Neuro-DSA is superior to DE-CTA (P<0.01) . The duration of scanning was significantly longer in DE-CTA group than in Neuro-DSA group (P<0.01) . However, the radiation dose, time of entire examination, and time of subtraction were significantly lower/shorter in DE-CTA group than in Neuro-DSA group (P<0.01) . The radiation dose of DE-CTA group is 26.3% lower than Neuro-DSA group.
The image quality of intracranial blood vessels with head DE-CTA is same as Neuro-DSA, while head DE-CTA has lower radiation doses and higher inspection efficiency than Neuro-DSA. However, the effect of the skull base bone removal needs to be improved.
通过比较神经数字减影血管造影（Neuro-DSA）与双源计算机断层扫描（CT）双能量脑血管造影的优缺点。
300例CT血管造影（CTA）图像正常的患者，使用双源CT进行双能量CT血管造影（DE-CTA组，n = 200）和Neuro-DSA扫描（Neuro-DSA组，n = 100）。两种扫描方法的比较基于图像质量、辐射剂量、后处理方法以及扫描和减影的持续时间。
DE-CTA组颅内血管的图像质量与Neuro-DSA组相比无显著差异（P>0.05），而I级图像数量显著高于其他三个等级（P<0.01）。然而，Neuro-DSA去除颅底骨的效果优于DE-CTA（P<0.01）。DE-CTA组的扫描持续时间明显长于Neuro-DSA组（P<0.01）。然而，DE-CTA组的辐射剂量、整个检查时间和减影时间明显低于/短于Neuro-DSA组（P<0.01）。DE-CTA组的辐射剂量比Neuro-DSA组低26.3%。
头部DE-CTA颅内血管的图像质量与Neuro-DSA相同，而头部DE-CTA的辐射剂量低于Neuro-DSA，检查效率更高。然而，颅底骨去除的效果有待提高。
