摘要
目的:探讨MSCTAMIP及VR重建在评价颈动脉粥样硬化斑块形态和检出斑块内溃疡的应用价值。方法:21例病人(男18例,女3例,年龄38～90岁,平均68.9岁)共42支颈动脉分别行血管造影及MSCTA检查。在工作站行双侧颈动脉MIP及透明化VR重建,在显示不规则斑块和斑块内溃疡的能力上与血管造影结果进行对比分析。结果:VR显示不规则斑块最多,能显示所有血管造影、MIP图像表现为不规则斑块的血管。VR观察到7支血管7个溃疡;MIP显示其中6个,另1个由于钙化遮盖,MIP图像上未见显示;血管造影仅显示其中的5个。结论:MSCTAVR重建,在发现不规则斑块和检出斑块内溃疡的能力上,较血管造影更有优势;而MIP由于有钙化影响,没有较血管造影更有优势。
Objective： To discuss the value of MSCTA for evaluation of carotid artery atherosclerotic plaque morphology and plaque ulceration. Materials and Methods： In 21 patients, 42 carotid arteries were examined with conventional angiography and MSCTA（GE Lightspeed Qx/1 Extra）. Original CT data were transferred to workstation（Advantage Workstation 4.1） for reconstruction and were displayed on volume rendering（VR） and maximum intensity projection（MIP） images. The ability for demonstration of plaque morphology and plaque ulceration was compared between MSCTA and conventional angiography. Resuits： Plaque irregularities demonstrated more frequent on VR images than those on angiograms and MIP images. Seven ulcerations in 7 vessels were observed on VR images, 6 of them were observed by MIP and only 5 of them by angiography, one ulceration was missed on MIP images because of heavv calcification. Conclusion： Comparing with conventional angiography, VR depicts plaque morphology, plaque ulceration more thoroughly. As the obscurity of plaque by calcification, conventional angiography is more valuable than MIP.
出处
《中国临床医学影像杂志》
CAS
北大核心
2005年第9期494-496,504,共4页
Journal of China Clinic Medical Imaging
