ABSTRACT
Objective To investigate the relationship between carotid arteriostenosis and atheromatous plaques with cerebral in-farction.Methods Cervical spiral CT angiography of 56 cases with cerebral infarction and 49 cases without cerebral infarction were retrospectively analysed .The difference between the two groups was compared with regard to the distribution ,nature of plaques and the degree of carotid artery stenosis.Results Of 56 patients with cerebral infarction,126 atheromatous plaques were detected in 42 patients,of which 39 were soft,34 were calcified,53 exhibited a combined nature of both calcified and soft plaque and 7 cases were plaque ulcerations (soft plaque and mixed plaque accounted for about 73%).Plaque location for carotid artery was in the bifurcation. 102 carotid arteries stenosis were found in 38 patients,which included mild stenosis in 29,moderate in 40,severe in 27 and occlusion in 6(moderate and severe stenosis accounted for about 65.7%).In the control group,28 plaques were detected in 1 1 cases,of which 6 were soft,13 were calcified and 9 exhibited a combined nature of both calcified and soft plaque.1 1 carotid arteries stenosis were found in 7 patients,included mild stenosis in 10,moderate in 1.A significant difference (P <0.05)in carotid arteriostenosis and ath-eromatous plaques between the two groups was found.Conclusion Carotid plaques and stenosis are important risk factors of cerebral infarction.Multi-slice spiral CT angiography(MSCTA)has important value in analysis of carotid artery stenosis and atheroderotic plaques.
ABSTRACT
Objective To analyze the plaque distribution of abdominal aorta and its branches by multislice spiral CT angiography (MSCTA).Methods 145 patients recommended to abdominal enhanced CT were randomly selected in this investigation,and divided into three groups according to their age,i.e.,young,middle and old-aged group.CTA was performed with the use of multiple planar reconstruction(MPR),volume rendering (VR)and vessel probe(VP)technology.Results 124 patients with atherosclerotic plaques of abdominal aorta and all its branch-vessels,the incidences of the three groups were 9.7%(14 cases),30.3%(44 cases)and 45.5%(66 cases)respectively(P <0.005).It showed that calcified plaques were detected in a total of 1 50 in 302 plaques of all the branch-vessels.230 plaques(76.2%)were detected in abdominal branch-vessels of grade 1,of which,the incidences of superior mesenteric artery plaques was the highest(32.4%).Of the 54 plaques(1 7.9%)detected in abdominal branch-vessels of grade 2,the incidence of splenic artery plaques was the highest(13.8%).In abdominal branch-vessels of grade 3,the plaques were mainly distributed in splen-ic lobial artery.The splenic artery plaques mainly spreaded in the middle segment,while other plaques were mostly in peristome and proximal segment of vessels.The incidences of plaques in the three branches were 47.6%(69 cases),1 5.2%(22 cases),and 9.0%(13 cases)respectively(P <0.005).Conclusion The incidences of atherosclerotic plaques are higher in the middle and aged people. The plaques of the three abdominal branch-vessels mainly distribute in the peristome and proximal segment,and are much likely to be detected in abdominal branch-vessels of grade 1.