摘要
目的探讨主动脉夹层(AD)真假腔的CT征象。方法收集我院2014年-2017年24例AD,回顾性分析CT表现,评价及观察AD真假腔CT征象。结果蜘蛛网征13例,均位于假腔;鸟嘴征23例,18例位于假腔,1例位于真腔,4例真假腔均可见;腔内血栓19例,18例位于假腔,1例真假腔均见血栓;83.7%节段假腔大于真腔;37.5%动脉期真腔强化密度高于假腔、静脉期假腔高于真腔,62.5%真假腔强化密度相当;内膜片弯曲方向,56.8%节段弯向假腔,35.8%平直,4.9%弯向真腔,1段上半部分弯向真腔、下半部分突向假腔,1例内膜片呈反"S"形;外壁钙化13例,真腔外壁钙化6例,假腔外壁钙化4例,真腔及假腔均钙化3例;内膜片钙化及钙化弯曲方向,内膜片钙化11例,弯向真腔4例,弯向假腔1例,平直4例,小点状钙化2例;环绕征1例。结论蜘蛛网征为AD假腔的可靠征象,鸟嘴征、真假腔大于对比、腔内血栓、真假腔强化密度对比有助于AD真假腔的鉴别。
Objective To investigate the CT findings of true and false cavities in aortic dissection(AD).Methods 24 cases of AD from 2014 to 2017 in our hospital were collected.The CT findings were retrospectively analyzed,and the true and false lumen manifestations of AD were evaluated and observed.Results The spider web signs 13 cases,all in the false cavity.Twenty-three cases were found in the beak,18 were in the false cavity,one was in the real cavity,and four were in the true cavity.There were 19 cases of intracavitary thrombosis,18 of which were in the sham cavity.83.7 false cavities are larger than the true lumen;The true lumen of the arterial period was higher than that of the false cavity,and the phleural cavity was higher than the true cavity.Diaphragm in the bending direction,a total of 81 lesions,46 segment to the false lumen,29 straight section,to the true lumen 4,paragraph 1 in the upper part to the true lumen,the lower part to the false lumen,1 case of diaphragm inside tends to be the"S"shape change;There were 13 cases of external wall calcification,6 cases of external wall calcification,4 cases of pseudocavity wall calcification,and 3 cases of true cavity and false cavity.There were 11 cases of calcification and calcification in the inner diaphragm calcification and calcification.There were 11 cases of calcification in the inner diaphragm,4 cases were curved to the true cavity,1 case in the flexural cavity,4 cases in straight lines,and 2 cases of small point calcification.One case is encircled,the lumen is the true cavity.Concluion Spider webs to AD reliable sign of false lumen,around the sign was around the cavity as the true lumen,beak sign and false cavity is greater than the true lumen,lumen thrombosis,the density of lumen strengthen contrast will aid in the identification of AD true and false lumen.
作者
陈炯
何飞
CHEN Jiong;HE Fei(Department of Radiology,Guangxi Nanning Second People's Hospital,Nanning 530031,Guangxi Province,China)
出处
《中国CT和MRI杂志》
2018年第1期79-81,共3页
Chinese Journal of CT and MRI
关键词
64排CT
主动脉夹层
真假腔
鉴别诊断
64-slice CT
Aortic Dissection
True and False Cavity
The Differential Diagnosis
