The Application of Multi-slice Spiral CT Angiography in the Internal Mammary Artery / 实用放射学杂志

ABSTRACT

Objective To estimate the ability of MSCTA in displaying internal mammary artery . Methods MSCTA images of clinically suspected aortic disease in 30 patients were retrospectively re-processed and analyzed.The transverse images were combined with the reorganization images to observe the running rule,length and diameter of internal mammary artery.Results 60 internal mammary arteriae were showed by MSCTA,one was maldevelopment and obvious smaller than that of the contralateral one,four in two patients were obvious circuitous and two in one patient appeared abnormal branch.All internal mammary arteries originated from the outside of the first segmental of the left and right subclavian artery respectively,and descended along the back of the upper 6 sostal cartilages,in the distance of 2 cm to the limbus of sternal border,then divided into two in the sixth intercostal space level.56 on anterior view showed straight line descent,while on lateral view,they closed to the costal cartilage and were mild-circuitous.The average length of internal thoracic arteries was(20.11?1.85) cm in right and (20.34?1.57) cm in left, the average diameter was(2.49?0.37) cm in right and (2.45?0.35) cm in left.Conclusion MSCTA can clearly demonstrate the internal mammary artery,which provides various kinds of information for the clinical diagnosis and treatment of certain diseases.