128层螺旋CT血管成像对胆囊动脉的研究  

Cystic artery with 128-detector row spiral CT angiography

作　　者：王礼同[1] 李澄[1] 刘淑惠[1] 徐文娟[1] 

机构地区：[1]扬州市第一人民医院影像科,江苏225001

出　　处：《放射学实践》2010年第11期1249-1252,共4页Radiologic Practice

摘　　要：目的:探讨128层CT血管成像(CTA)对胆囊动脉的正常解剖及其变异的显示能力。方法:107例患者采用128层螺旋CT行胆囊动脉成像,并行多平面重组(MPR)、薄层最大密度投影(SMIP)、全体积最大密度投影(VMIP)和容积再现(VR)成像,观察胆囊动脉的起源、支数、走行及其与胆囊三角之间的解剖关系。结果:103例(96.3%)CTA能显示胆囊动脉(n=128)及其起源,起源于正常肝右动脉105支(82.0%),变异肝右动脉8支(6.3%),其它动脉15支(11.7%);单支胆囊动脉78例(75.7%),双支胆囊动脉25例(24.3%),共同起源于正常肝右动脉20例(80%)。98例(95.1%)MPR、SMIP图像能清晰地显示胆囊动脉与胆囊三角之间的解剖关系,1支胆囊动脉走行于胆囊三角内55例(56.1%),1支胆囊动脉走行于胆囊三角外18例(18.4%),1支胆囊动脉走行于胆囊三角内而另外1支走行于胆囊三角外18例(18.4%)。103例横轴面CT、MPR和SMIP图像均能显示胆囊动脉,VMIP图像能显示胆囊动脉92支(71.9%),VR图像仅能显示胆囊动脉59支(46.1%)。结论:CTA能清晰地显示胆囊动脉的起源、支数、走行及其与胆囊三角之间的解剖关系,为临床外科提供解剖学依据。Objective：To discuss the capability of 128-detector row spiral CT angiography （CTA） in displaying the a natomy and variations of cystic artery. Methods：The cystic artery CTA was performed with 128 detector row spiral CT for 107 cases and the raw data were reconstructed with multi planar reformation （MPR）, thin section maximum intensity pro jection （SMIP）,volume maximum intensity projection （VMIP） and volume rendering （VR） technology. The origin, bran ches and course of cystic arteries and their anatomy relationship with the calot triangle were studied. Results： CTA could show the cystic artery and its origin in 103 cases （128 branches）,which were originated from the normal natural right hepatic artery in 105 branches （82.0 %）, the variant accessory right hepatic artery in 8 branches （6.3 % ） and other arteries in 15 branches （11.7%）. One single cystic artery was showed in 78 cases （75.7%） ,two cystic arteries were showed in 25 ca ses （24.3 % ）, both of them originated from the normal natural right hepatic artery in 20 cases （80 % ）. MPR and SMIP images could clearly show the anatomy relationship Between cystic arteries and calot triangle in 98 cases （95.1%）. The course of the single cystic artery was showed within the calot triangle in 55 cases （56.1%） ,and outside the calot triangle in 18 ca ses （18.4%）;the course of one cystic artery within the calot triangle and the other one outside the calot triangle were showed in 18 cases （18.4%）. The arteries could be clearly displayed on axial view,MPR and SMIP images in 103 cases. 92 branches （71.9%） of the cystic arteries could be displayed on the VMIP images yet only 59 branches （46.1%） could be as sessed on VR images. Conclusion： The origin, branches, course of cystic arteries and their anatomy relationship with the calot triangle could be clearly displayed on CTA,which provides the anatomy basis for clinical surgical practice.

关 键 词：胆囊 胆囊动脉 血管成像 体层摄影术 X线计算机 

分 类 号：R657.4[医药卫生—外科学]