Multi-detector CT for evaluating aortic root parameters changes caused by aortic stenosis
10.13929/j.issn.1003-3289.2025.03.015
- VernacularTitle:多层螺旋CT评估主动脉瓣狭窄所致主动脉根部参数改变
- Author:
Shuai ZHANG
1
;
Ting HUANG
;
Xi GUO
;
Quanliang SHANG
Author Information
1. 吴忠市人民医院放射影像科,宁夏吴忠 751100;中南大学湘雅二医院放射科,湖南长沙 410011
- Publication Type:Journal Article
- Keywords:
aortic valve stenosis;
transcatheter aortic valve replacement;
tomography,X-ray computed
- From:
Chinese Journal of Medical Imaging Technology
2025;41(3):419-423
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of multi-detector CT(MDCT)for evaluating changes of aortic root parameters caused by aortic stenosis(AS).Methods MDCT data of 20 cases with severe AS were retrospectively analyzed.The changes of the long diameter,short diameter,mean diameter,area,circumference,as well as diameter derived from area(DA)and diameter derived from circumference(DC)of aortic annulus(AA),left ventricular outflow tract(LVOT)and sinotubular junction(STJ)during early systole,late systole,early diastole and late diastole were measured and calculated,respectively.Results In early systole,the short diameter,mean diameter,area,circumference,DA and DC of A A were all significantly larger than that those in late systole,early diastole and late diastole(all P＜0.05).No significant difference of the long diameter of AA was found among different phases(all P＞0.05).Meanwhile,the short diameter,mean diameter,area,circumference,DA and DC of LVOT in early systole were all significantly larger than those in late systole,early diastole and late diastole(all P＜0.05).The long diameter of LVOT in early systole was larger than in late systole(P＜0.05),but not significantly different compared with that in early and late diastole(both P＞0.05).No significant difference of the above parameters of STJ was found among different phases(all P＞0.05).At early systole,DA and the mean diameter of AA were both significantly smaller than those of DC(both P＜0.05).Conclusion AA parameters obtained with MDCT in patients with severe AS were valuable for selecting prosthetic valves during transcatheter aortic valve replacement.
