Department of Imaging, Linyi Central Hospital, Linyi, Shandong, P. R. China.
CT/MRI Room, Women's and Children's Health Care Hospital of Linyi, Shandong, P. R. China.
J Int Med Res. 2020 Apr;48(4):300060519894790. doi: 10.1177/0300060519894790. Epub 2019 Dec 29.
To examine the clinical effect of computed tomography angiography (CTA) on parameters of intracranial aneurysms in different locations and with different sizes using digital subtraction angiography (DSA) as the standard.
Patients with intracranial aneurysms who underwent CTA examinations at the same center and received DSA examinations within 3 days were analyzed retrospectively. The morphological parameters of the aneurysms and parent arteries were measured with these two methods.
Mean aneurysm size and parent artery diameter were not different between CTA and DSA. The size of microaneurysms was significantly smaller with DSA than with CTA. The aneurysmal neck width was not different between CTA and DSA. DSA could clearly evaluate the relationship between the aneurysmal neck and the parent artery in all cases. However, CTA had a 90% accuracy rate of visualizing this relationship.
The accuracy rates of evaluating aneurysm size and the aneurysmal neck width and parent artery diameter are similar between CTA and DSA. A DSA examination is essential for evaluating the relationship among microaneurysms, the aneurysmal neck, and the parent artery. CTA is widely applied and more safe in clinical practice, while DSA has a better guiding effect than CTA for some complicated aneurysms.
以数字减影血管造影（DSA）为标准，探讨计算机断层血管造影（CTA）在不同部位和不同大小颅内动脉瘤参数方面的临床效果。
回顾性分析同一中心行 CTA 检查且在 3 天内接受 DSA 检查的颅内动脉瘤患者。采用这两种方法测量动脉瘤和载瘤动脉的形态学参数。
CTA 和 DSA 之间的平均动脉瘤大小和载瘤动脉直径无差异。DSA 测量的微动脉瘤大小明显小于 CTA。CTA 和 DSA 之间的瘤颈宽度无差异。DSA 可以清晰地评估所有病例中瘤颈与载瘤动脉之间的关系，而 CTA 对此关系的可视率为 90%。
CTA 和 DSA 对动脉瘤大小、瘤颈宽度和载瘤动脉直径的评估准确性相当。DSA 对于评估微动脉瘤、瘤颈和载瘤动脉之间的关系至关重要。CTA 在临床实践中应用广泛且更为安全，而 DSA 对某些复杂的动脉瘤比 CTA 具有更好的指导作用。
