CAJ | 학술논문

目的探讨不同重建算法对能谱CT冠状动脉去钙化效果的影响.方法对22例冠状动脉钙化患者行能谱CT冠状动脉成像.分别采用Detail和Standard两种不同的图像重建算法进行冠状动脉薄层图像重建,使用独立后处理工作站中的物质分离软件对冠状动脉钙化节段去钙化.由2位放射科医师采用4分法对能谱CT成像的去钙化效果进行评分,并采用χ2检验对两组的去钙化效果进行比较.结果 22例患者中,能谱CT共清晰显示85个冠状动脉钙化灶,两种方法的去钙化效果有非常显著的差异,其中Detail算法的去钙化效果更好.结论能谱CT冠状动脉成像中,Detail算法可更好地去除钙化,但会影响血管管腔的显示,Standard算法不能完全去除钙化,但与单能量成像结合,有助于更准确地评价钙化局部的血管管腔.
목적 탐토불동중건산법대능보CT관상동맥거개화효과적영향.방법 대22례관상동맥개화환자행능보CT관상동맥성상.분별채용Detail화Standard량충불동적도상중건산법진행관상동맥박층도상중건,사용독립후처리공작참중적물질분리연건대관상동맥개화절단거개화.유2위방사과의사채용4분법대능보CT성상적거개화효과진행평분,병채용χ2검험대량조적거개화효과진행비교.결과 22례환자중,능보CT공청석현시85개관상동맥개화조,량충방법적거개화효과유비상현저적차이,기중Detail산법적거개화효과경호.결론 능보CT관상동맥성상중,Detail산법가경호지거제개화,단회영향혈관관강적현시,Standard산법불능완전거제개화,단여단능량성상결합,유조우경준학지평개개화국부적혈관관강.
Objective To discuss the inlfuence of two different reconstruction algorithms on calciifcation elimination of coronary spectral imaging.MethodsAltogether 22 cases of patients with coronary calcification underwent coronary spectral imaging. All coronary segments with calcification were reconstructed with two different algorithms (Detail versus Standard) and processed with the material differentiation (MD) software to remove calcification. Two radiologists evaluated the effectiveness of calcification removal according to a 4-score method. Moreover, theχ2 verification method was applied to compare the calcification elimination between two groups.ResultsAmong 22 cases, 85 coronary calcification lesions were revealed clearly. There was significant difference between Detail Group and Standard Group in effectiveness of calciifcation removal. Calciifcation lesions in Detail Group was removed more completely.ConclusionAmong two reconstruction algorithms of coronary spectral CT imaging, the Detail algorithm could eliminate calciifcation more effectively, but inlfuenced the display of of vascular lumen. The Standard algorithm cannot remove the coronary wall calciifcation completely, but was helpful to accurately assess the local calciifed vascular lumenin combination with single energy imaging.