多层螺旋CT低剂量扫描在肺部病变诊断中的应用价值

The Application Value of Low Dose Multi-slice Spiral CT Scan in Diagnosis of Pulmonary Lesions

目的:探讨多层螺旋CT低剂量扫描在肺部病变诊断中的应用价值。方法:选择2012年1月-2013年1月在本科进行检查的30例肺部疾病患者,对其分别进行常规剂量(160mAs)扫描检查和低剂量(20mAs)扫描检查,其他相关参数相同,对两种剂量扫描的效果进行对照分析,并对比不同扫描方式所产生的辐射量。结果:两种剂量扫描所发现的结节、肿块、钙化灶、结核空洞等的数量比较差异无统计学意义(P>0.05);所得的影像片在病灶特征上没有显著性差异;低剂量扫描产生辐射量为(1.02±0.02)mSv,常规量扫描产生的辐射量为(2.75±0.61)mSv,两者比较差异有统计学意义(P<0.05)。结论:CT低剂量扫描能够发现间质性肺疾病、肺结核、原发性肺癌或肺转移瘤等肺部疾病中的病变,效果与常规剂量扫描没有显著性差异无统计学意义,因此,低剂量扫描在肺部病变诊断中具有较高的应用价值,且辐射剂量较低,对患者和医务人员所造成的危害较小,值得在临床上推广应用。

Objective： To evaluate the application value of low dose multi-slice spiral CT scan in diagnosis of pulmonary lesions.Method： 30 cases with pulmonary disease were selected in the department of author from January 2012 to January 2013, the conventional dose （ 160 mAs ） scanning and low dose （ 20 mAs ） scan were given to them respectively, other relevant parameters were the same, two kinds of dose effect were analyzed and compared, compared the amount of radiation produced by different scanning modes.Result： The number comparison of nodules, mass, calcification, tuberculous cavity by different scanning had no statistical significance （P〉0.05）, there were no significant differences between the images obtained in lesion characteristics, low dose scanning radiation amount was （ 1.02 ~ 0.02 ） mSv, routine scanning radiation amount was （ 2.75 ~ 0.61 ） mSv, the difference was statistically significant between them （P〈O.05） .Conclusion： Low dose CT scan can found interstitial lung disease, pulmonary tuberculosis, lung cancer or lung metastasis lung disease lesions, there is no significant difference in the effect of routine dose scanning, and therefore, low dose scanning has high application value in the diagnosis of lung diseases, and Lower radiation dose, less harmful to the patients and the medical staff, and worth of clinical application.