Application of 3D T1-SPACE combined with 3D-TOF sequence for follow-up evaluation of stent-assisted

• 作 者: Qiuji Shao Qiang Li Qiaowei Wu Tianxiao Li Li Li Kaitao Chang Yingkun He
• 机 构: Department of Cerebrovascular Disease,Zhengzhou University People’s Hospital,Henan Provincial People
• 出 处: 介入医学杂志（英文）
• 发表日期: 2021年2期
• 关键词: Intracranial aneurysm Stent-assisted Magnetic resonance imaging Follow-up

Objectives:To assess 3D T1-SPACE combined with 3D-TOF sequence for follow-up evaluation of stent-assisted coil embolization for intracranial aneurysm.Materials and methods:Between Oct 2018 and May 2019,we enrolled 25 patients with intracranial aneurysm who underwent stent-assisted coil embolization.All patients were followed up for 6 to 10 months after endovascular treatment(EVT)using 3D-TOF MRA,3D T1-SPACE and DSA to evaluate aneurysm occlusion and parent artery patency.Results:With regards to aneurysm occlusion,the specificity of 3D-TOF MRA was 86.9％(20/23)and the accuracy was 84％(21/25).There was no statistical significance(P=0.409)compared with the DSA.The parent artery by 3D-TOF MRA showed that there were 14 patients with grade 3,8 patients with grade 2 and 3 patients with grade 1.However,3D T1-SPACE showed that all 25 patients were grade 4,and were clearly displayed without metal artifacts.The comparison of the two MR techniques demonstrated that 3D T1-SPACE was superior to 3D-TOF MRA in the evaluation of parent artery(P＜0.001).Conclusions:3D T1-SPACE sequence provides better image quality and higher accuracy for evaluating stented parent arteries compared to TOF-MRA.This study also shows that 3D-TOF MRA has a merit to evaluate aneurysm occlusion.The combination of these two modalities can be used as an optional follow-up evaluation after EVT of intracranial aneurysms.