CAJ | 학술논문

目的探讨三维CT血管造影(CTA)的应用范围及临床价值.方法回顾性分析284例确诊为血管疾病的CTA资料,包括头颈血管组141例和躯干四肢血管组143例.扫描层厚为0.625 ～3.0 mm、螺距1.0～1.5,造影剂总量1.5 ～2.0 ml/kg.成像方法包括容积重建法(VR)、多层面重建法(MPR)、曲面重建法(CPR)、表面遮盖法(SSD)、最大强度投影法(MIP)及仿真内窥镜(VE).诊断结果与数字减影血管造影(DSA)和/或手术对比.结果进行2期CT螺旋扫描,实现心脏及全身血管三维成像,图像质量符合诊断要求.本组CTA诊断血管性疾病的敏感性、特异性、准确率分别为97.28％、82.35％、96.48％.CTA显示动脉瘤瘤体大小与DSA基本一致(P＞0.05),但较手术测量小(P＜0.05).结论三维CTA适用于心脏及全身血管检查,可弥补常规CT检查的不足,具有诊断准确率高、无创伤的特点和部分替代创伤性DSA的潜力.
목적 탐토삼유CT혈관조영(CTA)적응용범위급림상개치.방법 회고성분석284례학진위혈관질병적CTA자료,포괄두경혈관조141례화구간사지혈관조143례.소묘층후위0.625 ～3.0 mm、라거1.0～1.5,조영제총량1.5 ～2.0 ml/kg.성상방법포괄용적중건법(VR)、다층면중건법(MPR)、곡면중건법(CPR)、표면차개법(SSD)、최대강도투영법(MIP)급방진내규경(VE).진단결과여수자감영혈관조영(DSA)화/혹수술대비.결과 진행2기CT라선소묘,실현심장급전신혈관삼유성상,도상질량부합진단요구.본조CTA진단혈관성질병적민감성、특이성、준학솔분별위97.28％、82.35％、96.48％.CTA현시동맥류류체대소여DSA기본일치(P＞0.05),단교수술측량소(P＜0.05).결론 삼유CTA괄용우심장급전신혈관검사,가미보상규CT검사적불족,구유진단준학솔고、무창상적특점화부분체대창상성DSA적잠력.
Objective To valuate the three-dimensional CT angiography(3DCTA) in diagnosing blood vessel diseases.Methods CTA findings of 284 patients confirmed with blood vessel diseases were retrospectively analyzed.They were divided into two groups:141 cases of head and neck and 143 cases of trunk and extremities.Scan was performed with the beam collimation of 0.625 ～ 3.0mm,increment of 0.3 ～ 1.4mm,pitch of 1.0 ～ 1.5,with the gross contrast medium of 1.5 ～ 2.0ml/kg.3D imaging methods included volume rendering(VR),multi-planar reformatting (MPR),curved planar reformatting(CPR),surface shade display(SSD),maximum intensity project(MIP) and virtual endoscopy(VE).The diagnostic results of CTA were compared with those of DSA and/or surgery.Results In this study,3D images of vasculature met the diagnostic criterion.The diagnostic sensitivity,specificity and accuracy of CTA was 97.28％,82.35％ and 96.48％,respectively.The size of artery aneurysm shown with CTA and DSA had no significant difference( P ＞0.05 ),both smaller than that in surgery( P ＜ 0.05 ).Conclusion 3DCTA could be used in diagnosing the cardiovascular diseases and compensate the limitation of conventional CT.It had the characteristics of non-invasion,high accuracy and could partly substitute DSA.