钙的冠状动脉沉着与CT

Coronary artery calcinosis and CT

目的探讨CT检测冠状动脉钙量的技术和价值。方法对436例被检者进行胸部螺旋CT检查，心脏重建层厚3．8mm，冠状动脉钙质沉着定义为CT值≥90Hu，面积≥1mm^2。结果436例中，冠状动脉钙质沉着109例（占25．00％），无钙质沉着327例（占75．00％）。冠状动脉钙质沉着的出现率随着年龄的增长而逐渐增加。40-49岁年龄段冠状动脉钙质沉着率为5．03％，50-59岁年龄段冠状动脉钙质沉着率为10．26％，60～69岁年龄段冠状动脉钙质沉着率为20．21％，70-79岁年龄段冠状动脉钙质沉着率为31．82％，80-89岁年龄段冠状动脉钙质沉着率为51．29％。结论CT对冠状动脉钙质沉着的诊断很有价值。

Objective To investigate the technique and value of coronary artery calcium detected by CT. Methods 436 subjects underwent single slice helical CT examination of the chest. Thickness of 3.8 mm were used in single slice helical CT examination of the heart reconstruction. Definition of calcinosis was a density≥90 Hu and area≥1 mm^2. Results Of 436cases, 109 cases were diagnosed as coronary artery calcinosis by helical CT（25.00%） and other 327 cases were normal（75.00%）. The frequency of coronary artery calcinosis increased with age. The incidence rate of coronary artery calcinosis was 5.03% in group of 40 to 49 years old, 10.26% in group of 50 to 59 years old, 20.21% in group of 60 to 69 years old, 31.82% in group of 70 to 79 years old, 51.29% in group of 80 to 89 years old. Conclusion CT is very significant in the diagnosis of coronary artery calcinosis.