The choice of multi slice computer tomography angiography reconstruction methods in the pre-operative abdominal aortic aneurysms

HUANG Xiao-yong; HUANG Lian-jun; PU Xin; Dou Rui-yu; LI Jie; XUE Yu-guo

doi:10.3760/cma.j.issn.1673-4777.2011.11.002

Abstract：Objective To assess the clinical value of integrated applications of multi slice computer tomography angiography (MSCTA) and multiple reconstruction methods in pre-operative abdominal aortic aneurysms.Methods The MSCTA data of 100 abdominal aortic aneurysms(AAA) from June 2009 to March 2011 were analyzed retrospectively.And the parameters that endovascular aortic repair(EVAR) required were measured by volume rendering techique,mulit-planar reformation,maximum intensity projection and curved planar reformation reconstruction seperately in 83 cases which had underwent EVAR successfully.Compared with single axis view of measurements,the differences between MSCTA different reconstruction methods were assessed.Results Traditional surgeries were performed in 15 cases,clinical follow up were performed in 2 cases,and EVAR were performed in 83 cases.In 83 cases which underwent EVAR,2 cases were type Ⅰ (2.4％),66 cases were type Ⅱ (79.5％),in which 35 cases were type Ⅱ a,18 cases were type Ⅱ b,13 cases were type Ⅱ c,and 15 cases were type Ⅲ ( 18.1％ ).The parameters including the length and diameter of proximal and distal neck,the bilateral common iliac arteries,the diameter of bilateral external iliac arteries,the length of aneurysm,and the angles were measured in MSCTA.Compared with the single axis view of measurements,there was significance differences.Conclusions The abdominal aortic aneurysm measured by single axis view can lead to an error measurements of length.The integrated applications of MSCTA and multiple reconstruction methods can describe the details of AAA.