Clinical value of high-resolution flat detector computed tomography in intracranial covered stent (Willis) implantation
10.3760/cma.j.cn115354-20200304-00143
- VernacularTitle:高分辨平板CT在颅内Willis覆膜支架置入术中的应用价值研究
- Author:
Chengcheng SHI
1
;
Ji MA
;
Ming ZHU
;
Tao ZHU
;
Bao MA
;
Xinwei HAN
;
Tengfei LI
Author Information
1. 郑州大学第一附属医院放射介入科 郑州大学介入治疗研究所，郑州 450052
- Keywords:
High-resolution flat detector CT;
Willis covered stent;
Stent implantation;
Dual volume 3D fusion reconstruction technique
- From:
Chinese Journal of Neuromedicine
2020;19(8):757-762
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the utility of high-resolution flat detector CT (HR-FDCT) in Willis covered stent implantation.Methods:The clinical and imaging data of 23 patients with intracranial aneurysms, intracranial artery dissection or carotid-cavernous fistula treated by Willis covered stents in our hospital from June 2017 to August 2019 were retrospectively analyzed. Images were acquired using conventional FDCT and HR-FDCT; the differences of image quality for stent visualization were compared. Immediately after stent deployment, dual volume 3D fusion images were obtained from 5 s-3D-digital subtraction angiography (DSA) and HR-FDCT, and the stent expansion status was also recorded.Results:A total of 25 Willis covered stents were implanted in 23 patients with a success rate of 100%. As compared with that by FDCT, visualization of fine structures of the stent by HR-FDCT was improved, and the image quality by HR-FDCT was significantly improved as compared with that by FDCT (mean scores: 0.56±0.71 vs. 1.56±0.65, P<0.05). According to the reconstruction of 3D fusion images obtained from 3D-DSA combined with HR-FDCT, one stent was found to have poor apposition (the distal of the stent with kinking) without vascular rupture and internal leakage, and the other 24 stents were found to have good apposition. Conclusions:HR-FDCT could better display Willis covered stent details and afford improved image quality, which instructs surgeons to adopt appropriate treatment strategy. This novel HR-FDCT has great application potential in Willis covered stent implantation.
