The value and limitation of MRVE of thoracic aorta
LIU Xiangzhi,CHEN Bowen,ZHENG Zhihuang,et al.Department of Radiology, Chaozhou Central Hospital,Guangdong 521000
Objective:To assess the value and limitation of thoracic aortic MR virtual endoscopy(MRVE)and discuss its imaging technique. Methods:20 volunteers and 33 patients of thoracic aortic lesions were performed 3 dimensional dynamic contrast enhanced MR angiography (3D DCE MRA),from which MRVE were reconstructed to demonstrate the inner wall and lesions of thoracic aorta,and its visualization was also evaluated.Results:MRVE intuitively showed the anatomy and lesions of thoracic aorta.In 21 cases of aortic dissection, MRVE documented clearly the inlet,intimal flap displacement and lumina of aortic dissection,while the dilatation or narrowing of lumen of aortic aneurysm and aortitis was also shown by MRVE.For Fallot's tetralogy,the overriding aorta and the degree of the overriding were distinctly documented by MRVE.And half circle artifact was the main artifact of MRVE in this series. Conclusion: MRVE can intuitively show the inner wall and lesions of thoracic aorta,and be regarded as a routine examination for the patient with suspected thoracic aortic diseases.
【CateGory Index】： R445.2