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目的研究低剂量CT扫描在副鼻窦检查中的应用及其临床价值。方法将108例患者随机分为A、B、C 3组,每组各36例,在其他扫描参数不变的情况下,A组用250 mAs进行扫描,B组用50 mAs进行扫描,C组用30 mAs进行扫描,比较各组图像质量有无差异。结果B、C 2组单次扫描权重CT剂量指数分别降低了79.89%和87.99%;B组与A组所得图像质量比较无明显差异,C组与A组所得图像质量比较有显著性差异。结论可利用50 mAs低剂量对鼻窦进行扫描,所得的图像对疾病的诊治无影响。
Objective To study the application and clinical value of low-dose CT scanning in paranasal sinus surgery. Methods One hundred and eighty patients were randomly divided into A, B and C groups, with 36 cases in each group. When the other parameters were the same, group A was scanned with 250 mAs, group B was scanned with 50 mAs, group C Scan with 30 mAs to compare the image quality of each group whether there is any difference. Results The CT scan index of group B and group C decreased by 79.89% and 87.99%, respectively. There was no significant difference in the image quality between group B and group A, and the image quality of group C and group A was significantly different. Conclusion The low dose of 50 mAs can be used to scan the sinuses. The obtained images have no effect on the diagnosis and treatment of the disease.