Comparison of spectral CT imaging and 64 slice CT in assessment of carotid artery atherosclerotic plaque
10.3760/cma.j.issn.1005-1201.2015.01.008
- VernacularTitle:能谱CT重建模式与64层CT重建模式对于颈动脉粥样硬化斑块评估能力的对比分析
- Author:
Jingtao WU
;
Qingqiang ZHU
;
Wenrong ZHU
;
Hongying ZHANG
- Publication Type:Journal Article
- Keywords:
Carotid arteries;
Atherosclerosis;
Tomography,X-ray computed
- From:
Chinese Journal of Radiology
2015;49(1):29-32
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the efficacy of spectral CT imaging and 64 slice CT in assessment of carotid artery atherosclerotic plaque.Methods Thirty-eight patients with carotid plaque were detected retrospectively in this study (plaque,n=46) by using spectral CT.The composition of atherosclerotic plaque was measured by iodine-based images,lipid-based images with spectral CT imaging.Intraplaque hemorrhae,lipid components were also evaluated on spectral CT imaging and compared with pathology and specimen.Statistical comparison was performed with the Kappa value,independent-sample t test and exact test.Results The degree of carotid artery stenosis was (63.3 ±3.1)％ on spectral CT imaging whereas (61.6 ± 3.8) ％ on 64 slice CT.Two imaging modalities were in good consistency in evaluation of the degree of stenosis (Kappa=0.993,P＜0.01).There was no statistical difference in detecting fibrous cap rupture on spectral CT imaging and 64 slice CT (12 plaques vs 11 plaques,respectively,P＞0.05).Furthermore,spectral CT imaging showed 11 plaques within intraplaque hemorrhage,however,no case was found on 64 slice CT (P＜0.05).The plaque iodine concentration were (6.365 ± 1.937) and (1.573 ±0.776) mg/cm3 with or without internal hemorrhage(t=16.39,P＜0.05).Spectral CT imaging showed 9 plaques within intraplaque liquid whereas only 2 plaques showed intraplaque liquid on 64 slice CT (P＜0.05).Twenty-eight plaques within calcification in the plaque were found on spectrl CT imaging and 27 on 64 slice CT(P＞0.05).Conclusion Spectral CT imaging is a reliable tool in detecting intraplaque hemor-rhage and liquid component.
