Preliminary Study for the Relationship Between Left Coronary Plaque Characteristics With Left Coronary Bifurcation Angle and Diameter By 256 Slice CT Angiography
10.3969/j.issn.1000-3614.2014.10.006
- VernacularTitle:256层螺旋计算机断层摄影术对左冠状动脉粥样斑块性质与其分支夹角及径线指标关系的初步探讨
- Author:
Xiangjie REN
;
Caiying LI
;
Xiaowei LIU
;
Wei WANG
;
Guojing MA
;
Chen YU
- Publication Type:Journal Article
- Keywords:
Left coronary bifurcation angle;
Coronary atherosclerosis;
Coronary artery diameter;
Coronary artery area;
Computerized tomography;
Angiography
- From:
Chinese Circulation Journal
2014;(10):780-783
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To explore the relationship between left coronary plaque character with the bifurcation angle and diameter by 256-slice CT angiography (CTA). Methods: A total of 387 consecutive patients who received CTA in our hospital were retrospectively studied. There were 102 patients with normal image including 60 male and 42 female at the mean age of (52.10 ± 9.65) years and 285 patients with left coronary plaque including 166 male and 119 female at the mean age of (55.65 ± 10.40) years. All patients were divided into 4 groups according to the plaque condition, Normal group,n=102 patients without plaque, Non-calciifcation group,n=137, Calciifcation group,n=79 and Mixed group,n=69. The patients with non-calciifcation plaque included 73 of mild stenosis and 57 of moderate to severe stenosis in proximal LDA. Left coronary bifurcation angle, proximal diameter and area were measured by multi-planar reconstruction (MPR) and the maximum density projection (MIP) techniques to analyze the relationship between the above indexes and plaque position, character, degree of local stenosis. Results: Left coronary bifurcation angle, the proximal diameter, area in LDA and LCX in 3 plaque groups were all larger than those in Normal group,P<0.05. In Non-calciifcation group, the above indexes were similar between the patients with mild stenosis and moderate to severe stenosis,P>0.05, while in patients with moderate to severe stenosis, the bifurcation angle and diameter were larger in male than those in female patients,P<0.05. Conclusion: 256-slice CTA could objectively evaluate left coronary bifurcation angle, stenosis degree and plaque character, which are valuable for coronary artery disease prevention, diagnosis and treatment in clinical practice.
