Motion freeze technology for improving quality of cone-beam CT images of renal artery aneurysms
10.13929/j.issn.1672-8475.2024.06.011
- VernacularTitle:运动伪影校正技术改善肾动脉瘤锥形束CT图像质量
- Author:
Boshan LIU
1
;
Li SONG
;
Yuxiang ZHANG
;
Yinghua ZOU
;
Guodong ZHAO
;
Xiang LI
;
Yueqin GONG
Author Information
1. 北京大学第一医院介入血管外科,北京 100034
- Keywords:
aneurysm;
artifacts;
cone-beam computed tomography
- From:
Chinese Journal of Interventional Imaging and Therapy
2024;21(6):363-367
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of motion freeze technology(MFT)for improving the quality of cone-beam CT(CBCT)images of renal artery aneurysms.Methods Twenty patients with renal artery aneurysms who would receive transcatheter arterial embolization were prospectively enrolled.Renal artery angiography was performed under the guidance of CBCT,and motion artifacts were processed using MFT.Then subjective and objective evaluation of images before and after MFT correction were performed,aimed on displaying of renal artery,parent artery and vascular tree in target area,and the mean value(mean)and standard deviation(SD)of unit density pixels,margin sharpening error rate of blood vessels were measured and calculated.Results After MFT correction,the displaying of renal artery on maximum intensity projection images and parent artery on reconstructed CBCT images were significantly better than those before correction(both P<0.05),clear vascular trees could be automatically extracted using Flightplan for Liver software,SD and margin sharpening error rate of blood vessels of renal artery aneurysm significantly decreased but mean significantly increased on CBCT images(all P<0.05).Conclusion MFT could effectively improve the quality of CBCT images of renal artery aneurysms.