节段性或弥漫性狭窄的冠状动脉磁共振成像与血管造影术对比研究  

Comparison of MRA findings of the segmental or diffuse coronary artery stenoses with conventional DSA

作　　者：陈穗惠[1] 安宁豫[1] 江波[1] 李雪[1] 薛桥[1] 

机构地区：[1]解放军总医院,北京100853

出　　处：《中华老年心脑血管病杂志》2008年第9期653-656,共4页Chinese Journal of Geriatric Heart,Brain and Vessel Diseases

摘　　要：目的回顾性研究节段性或弥漫性狭窄的冠状动脉磁共振成像(CMRA)表现并与血管造影术进行对比。方法临床怀疑冠心病患者24例,采用CMRA导航波门控三维序列定向扫描冠状动脉,与数字减影血管造影术结果进行对比研究。结果CMRA显示<50%的狭窄13个节段,其中8个节段表现为信号下降,伴或不伴管腔边缘粗糙、轻度狭窄,5个节段分别表现为管腔轻度狭窄(2个)及轮廓粗糙(3个)。CMRA显示≥50%的节段性或弥漫性狭窄24个节段,18个节段表现为条状或间断性信号下降,伴轮廓粗糙及管腔狭窄≥50%,2个节段信号轻度下降,但管腔无明显狭窄,3个节段未显示,1个节段仅表现为≥50%的管腔狭窄。结论<50%和≥50%的冠状动脉狭窄的CMRA均可以表现为信号下降、轮廓粗糙、管腔狭窄。CMRA反映管腔狭窄程度与数字减影血管造影术比较有高估或低估的可能。objective To retrospectively study the coronary MRA（CMRA） findings of diffuse or segmental coronary artery stenoses. Methods Twenty four patients with clinically suspected coronary stenosis received targeted 3D navigator-gated coronary MRA which was compared with DSA as the standard of reference. Results Of the 13 segments with diffuse or tubular stenosis 50% on MRA, 8 showed decreased signal intensity with or without luminal coarseness and mild narrowness,5 showed mild luminal narrowness in 2 and luminal coarseness in 3. Of 24 segments with diffuse or tubular stenosis ≥50% on MRA, 18 demonstrated the linear or discontinuous decreased signal intensity with remarkable luminal narrowness and coarseness. Three segments were invisible and one displayed remarkable stenoses only. Conclusions CMRA findings of the diffuse or tubular coronary stenoses with both 〈50% and ≥50% narrowing have common features such as decreased signal intensity,luminal coarseness and narrowness. CMRA may over-or under-estimate luminal narrowness compared with DSA.

关 键 词：冠状动脉狭窄 磁共振成像 血管造影术 数字减影 对比研究 

分 类 号：R543[医药卫生—心血管疾病]