Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Radiologic Practice》 2018-04
Add to Favorite Get Latest Update

Clinical value of single energy metal artifact reduction technique of 320-row CT in the follow-up of visceral arterial aneurysms after coil embolization

HOU Kai;LV Peng;TANG Qi-ying;Department of Radiology,Zhongshan Hospital,Fudan University,Shanghai Institute of Medical Imaging;  
Objective:To investigate the clinical value of single energy metal artifact reduction(SEMAR)technique combined with adaptive iterative reconstruction algorithm of 320-row CT in the follow-up of visceral arterial aneurysms after coil embolization.Methods:The CTA images of 24 patients with visceral arterial aneurysms after coil embolization were retrospectively analyzed.Among them,22 were splenic artery aneurysms,2 were hepatic artery aneurysms.All of the CTA data were reconstructed using only iterative reconstruction technique(group A)or iterative reconstruction combined with SEMAR technique(group B).The visualization of contrast media and thrombus in the aneurysms,the diameters of the aneurysms,the proximal and distal arteries of the aneurysms and the enhancements of target organs were analyzed and compared between the two techniques.Results:The scores of visualization of contrast media and thrombus in the aneurysms,the proximal and distal arteries of the aneurysms and enhancements of target organs in group B were higher than those in group A(3.3±0.7 vs 1.3±0.5,Z=-4.52,P0.01;3.4 ±0.7 vs 1.3±0.5,Z=-4.38,P0.01;3.4±0.8 vs 1.4±0.5,Z=-4.37,P0.01;and 3.3±0.7 vs 1.5±0.5,Z=-4.46,P0.01;respectively).The diameters of the aneurysms could not be calculated in 4 patients because of severe metal artifacts;in the remaining 20 patients,the diameter of aneurysms in group B was less than that in group A[(25.4±9.3)mm vs(28.2±9.5)mm,Z=-3.36,P0.01].Conclusion:SEMAR technique can significantly reduce the metal artifacts and accurately assess the effect of the coil embolization of visceral arterial aneurysms,it has great application value in the follow-up.
【CateGory Index】: R730.44;R735
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved