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目的探讨多层螺旋CT在评价颈动脉斑块特征中的价值。方法回顾性分析2011年7月-10月132例行CT颈部血管造影患者的影像资料。对颈动脉斑块特征进行评价,重建方法包括多层面重建、容积再现技术、最大密度投影及曲面重建。结果 132例患者中,80例检出颈动脉斑块,最常出现钙化斑块的部位为海绵窦段和床突上段,右侧海绵窦段52例(65.0%)、左侧海绵窦段49例(61.3%),右床突上段37例(46.3%)、左侧床突上段30例(37.5%)。最常出现软斑块的部位为双侧颈总动脉,均为12例(15.0%)。最常出现混合斑块的部位为颈总动脉,右侧颈总动脉9例(11.3%)、左侧颈总动脉12例(15.0%)。颈动脉最容易轻度狭窄294处(294/1 440,20.4%),中、重度狭窄少见,分别为8处(8/1 440,0.5%)和6处(6/1 440,0.4%)。颈部动脉血管斑块最易出现钙化,总计249处(249/1 440,17.3%),其次是软斑块和混合斑块,均为39处(39/1 440,2.7%)。结论多层螺旋CT可准确评价颈动脉斑块特征。
Objective To investigate the value of multislice spiral CT in evaluating carotid plaque characteristics. Methods We retrospectively analyzed the imaging data of 132 patients with CT neck angiography from July to October in 2011. Carotid plaque features were evaluated. Reconstruction methods included multi-level reconstruction, volume rendering, maximum density projection, and surface reconstruction. Results Of the 132 patients, carotid artery plaque was detected in 80 cases. The most common sites of calcified plaque were cavernous sinus and upper part of the bed, the right cavernous sinus segment was 52 (65.0%), the left cavernous sinus segment Cases (61.3%), the right upper bed in 37 cases (46.3%), the left upper bed in 30 cases (37.5%). The site of the most common plaque was the common carotid artery, both in 12 (15.0%) patients. Nineteen patients (11.3%) had common carotid artery and 12 patients (15.0%) had left common carotid artery. Carotid artery stenosis was the most common at 294 (294/1 440, 20.4%) with moderate and severe stenosis, which were 8 (8/1 440, 0.5%) and 6 (6/1 440, 0.4% . Cervical artery plaque was the most vulnerable to calcification, totaling 249 (249/1 440, 17.3%), followed by soft plaque and mixed plaque, both of which were 39 (39/1 440, 2.7%). Conclusion Multi-slice spiral CT can accurately evaluate the characteristics of carotid plaques.