论文部分内容阅读
目的讨论16层螺旋CT对颈动脉血管的诊断价值和临床应用。方法18例临床怀疑颈动脉狭窄者,经16层螺旋CT扫描后,用薄层横断面放大图像(MTI)及最大密度投影(MIP)、多平面重建(MPR)、曲面重建(CPR)等后处理方法,进行管腔及管壁斑块的形态学显示。结果本组36支颈动脉中,正常20支,异常16支。有10例16支颈动脉狭窄,其中轻度狭窄6例,中度狭窄6例,重度狭窄4例。12例颈动脉狭窄斑块的CT值范围为24-146Hu,平均为67Hu,6例斑块密度较高呈混杂密度影,并有高密度钙化影。其中有2例显示斑块内点状钙化周围环以低密度影,中心的高密度可代表脂质核心钙化,周围为未钙化脂质。结论16层螺旋CT颈动脉血管成像图像质量满意,重建图像质量高,能较准确显示管腔狭窄及管腔斑块形态学改变,满足临床诊断需要,具有很好的临床筛查及实用价值。
Objective To discuss the diagnostic value and clinical application of 16-slice spiral CT in carotid artery. Methods Twenty - eight patients with suspected carotid stenosis were retrospectively analyzed. After 16 - slice spiral CT scans were performed with MTI, MPR, CPR and so on. Treatment methods, the lumen and the wall of the plaque morphology. Results The group of 36 carotid arteries, normal 20, abnormal 16. There are 10 cases of 16 carotid stenosis, including 6 cases of mild stenosis, moderate stenosis in 6 cases, severe stenosis in 4 cases. The CT value of 12 carotid stenosis plaques ranged from 24 to 146 Hu, with an average of 67 Hu. The plaque density of 6 cases was mixed density with higher plaque density and high density calcification. Two of them showed plaque-like calcification around the ring with low density, the center of the high density can represent the lipid core calcification, around the non-calcified lipid. Conclusion The MSCT images of 16-slice spiral CT are satisfactory, the quality of reconstructed images is high, the stenosis of lumen and the morphology of lumen plaque can be accurately displayed, which meets the need of clinical diagnosis and has good clinical screening and practical value.