64层螺旋CT对心功能不全患者冠状窦的评价

目的探讨64层CT冠状动脉血管成像(CTA)评价冠状窦(CS)的可行性,并观察心功能不全患者冠状窦口(CSO)的形态学变化。方法将24例经CTA证实无心脏和冠状动脉疾病的患者和24例不同程度充血性心功能不全患者的冠状动脉CTA检查数据进行图像处理,主要评价CS的图像质量、长度、CSO的直径和横截面积、冠状窦瓣的显示率,并比较心功能正常患者和充血性心功能不全患者的CSO大小有无差异。结果所有患者CS的图像质量评分均达3分,并均有较高的对比噪声比(CNR),心功能正常组CS平均长度(34.3±16.3)mm,与心功能不全组无显著差异(P>0.05),心功能不全组的CSO上下径和横截面积明显大于心功能正常组(P<0.05)。结论64层螺旋CT血管成像可以清晰显示CS,并能够对CSO的大小进行精确测量;心功能不全患者的CSO扩张,其上下径和横截面积大于心功能正常组。

Evaluation of coronary sinus in patients with heart failure by 64-slice CT angiography

Objective To evaluate the feasibility of imaging coronary sinus (CS) on 64-slice CT angiography, and to compare the caliber and area of coronary sinus orifice (CSO) in patients with and without heart failure. Methods Post-processing the coronary CTA data of 24 patients with heart failure and 24 patients without heart failure on vascular analysis techniques to visualize the CS, and the caliber and the area of CSO were measured. The quality of CS on CT imaging was graded using a 4-point scale. The contrast noise ratio (CNR) of CS was evaluated. Results The grade of the quality of CS for every patient was 3, and the mean CNR of CS was 5.3±2.9. The length of CS of patients without heart failure was (34.3±16.3) mm, and there was no significant difference between the patients with and without heart failure (P>0.05). The supero-inferior caliber of CSO for the patients with heart failure was significantly larger than that of patients without heart failure (P<0.05). Conclusion 64-slice CT angiography can visualize CS clearly, and the size of CSO can be measured on CT accurately. The CSO of the patients with heart failure was larger than that of patients without heart failure, especially for the super-inferior caliber and area of CSO.