The application of the integration of CT angiography and X-ray fluoroscopy in the guidance of left atrial appendage closure
10.3969/j.issn.1004-8812.2025.03.005
- VernacularTitle:CT血管造影与X线透视融合技术在左心耳封堵术中的应用
- Author:
Shi-yao ZHAO
1
;
Guo-dong HAN
1
;
Ting TAO
1
;
Shou-gang SUN
1
Author Information
1. 兰州大学第二医院(第二临床医学院)心血管内科,甘肃兰州 730000
- Publication Type:Journal Article
- Keywords:
Left atrial appendage closure;
CT angiography;
X-ray Fluoroscopy;
Image fusion
- From:
Chinese Journal of Interventional Cardiology
2025;33(3):150-154
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effectiveness of CT angiography(CTA)imaging and fluoroscopic fusion navigation techniques in left atrial appendage closure(LAAC).Methods A total of 82 patients underwent LAAC in this prospective study and were matched(1:1)according to whether they underwent image fusion or not.The fusion group(41 cases)consisted of patients who received LAAC with the support of CTA and X-ray fluoroscopy fusion technology;The non fusion group(41 cases)consisted of patients who underwent surgery using traditional surgical methods without the support of this technology.Record the intraoperative indicators,perioperative complications,and postoperative follow-up outcomes of both groups.Results The surgical time in the fusion group was significantly shorter than that in the non fusion group[(50.23±25.23)min vs.(65.71±29.15)min,P=0.012],The difference is statistically significant.Compared with the non fusion group,the fusion group significantly reduced the total radiation dose[(195.15±205.59)mGy vs.(351.08±196.54)mGy],dose area product[(22.47±20.05)Gy·cm2vs.(38.12±19.38)Gy·cm2],and X-ray fluoroscopy time[(9.03±3.58)min vs.(13.35±4.23)min].Correspondingly to the radiation dose,the amount of contrast agent used in the fusion group was also relatively reduced[(59.32±24.65)ml vs.(93.12±35.08)ml],and the differences were statistically significant(all P＜0.001).There was a significant difference in the rate of repeated interval puncture(2.44％vs.12.20％,P=0.090),but the difference was not statistically significant.Occluder implantation success rates were identical(100.00％vs.100.00％).No statistically significant differences in procedural complications were observed between the groups.Conclusions Three-dimensional CTA and fluoroscopic fusion navigation techniques are not only feasible and safe but also enhance the efficiency of LAAC procedures.
