256层螺旋CT血管成像对胸廓内动脉的显示价值

The Value of 256-Slice Spiral CT Angiography in Internal Thoracic Artery

目的探讨256层螺旋CT(MSCT)血管成像对胸廓内动脉的显示价值。方法回顾性分析107例怀疑胸腹主动脉病变患者的血管造影图像,观察两侧胸廓内动脉的走行规律及其解剖特征,将其沿走行平均分为近、中、远3段,测量3个节段血管腔内径、两侧胸廓内动脉长度及其分支肌膈动脉内径和至邻近胸骨缘的距离。结果 107例患者两侧胸廓内动脉及其分支肌膈动脉显示率均为100%。两侧胸廓内动脉中,同侧近、中、远各段内径比较差异有统计学意义(P<0.05),从上至下依次变细;两侧相应节段比较差异无统计学意义(P>0.05)。左侧胸廓内动脉较右侧稍长(P<0.05)。两侧肌膈动脉内径及至胸骨边缘距离差异无统计学意义(P>0.05)。结论应用256层螺旋CT血管成像可以清晰显示正常胸廓内动脉走行规律及其解剖特征,为临床提供了较为重要的解剖信息。

Objective To study the value of 256-slice spiral CT （MSCT） in internal thoracic artery. Methods The angiographic images of 107 patients who were suspected thoracic and abdominal aortic diseases were retrospectively ana- lyzed. The running rule and branches of internal thoracic artery on both sides were observed. Each side of the internal thorac- ic artery was divided into 3 sections according to the running rule. The lumen diameter, vessel length and its branches were measured in three segmental vascular of the internal thoracic artery. The lumen diameter of the diaphragmatic artery diame- ter, and the distance between internal thoracic artery and each border of the sternum were also measured. Results Both sides of the internal thoracic and diaphragmatic arteries were shown in 107 patients （100%）. There were significant differenc- es in vascular lumen diameter of intrathoracic artery of both sides （P 〈 0.05）. There were no significant differences between both sides of the corresponding segments （P 〉 0.05）. The left internal thoracic artery was significantly longer in the left side than that of right side （P 〈 0.05）. There were no significant differences between the diameter of diaphragmatic arteries and the distance between the internal thoracic artery and the sternal edge of two sides （P 〉 0.05）. Conclusion The application of 256-slice spiral CT angiography can clearly show the running rule and anatomical features of internal thoracic artery, and provide a relatively important clinical information.