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目的:比较低剂量与常规剂量螺旋CT扫描在肺结核治疗中应用的价值。方法:选择2013年2月至2014年7月在我院进行随访检查的120例肺结核患者作为研究对象,将患者随机分为低剂量组和常规剂量组,对两组患者的CT图像进行质量评分,对两组患者的图像质量、辐射剂量、诊断报告变动评分和病灶的数目等方面进行比较。结果:两组患者的图像质量评分均大于2.5,均达到临床诊断的要求。常规剂量组图像质量的优良率明显高于低剂量组,其差异有统计学意义(X2=7.945,P<0.05)。低辐射组的CTDIvol和DLP均明显小于常规剂量组,其差异有统计学意义(t=37.381,29.742;P<0.001)。常规剂量扫描后发现病灶数目与低剂量扫描发现的病灶数目进行比较,其差异无统计学意义(X2=0.099,P>0.05)。结论:在确保人体健康和节约成本的前提下,低剂量CT扫描应用于肺结核治疗的随访检查中值得推广。
Objective: To compare the value of low-dose and conventional-dose spiral CT in the treatment of pulmonary tuberculosis. Methods: From January 2013 to July 2014, 120 patients with pulmonary tuberculosis who underwent follow-up examination in our hospital were selected as research objects. Patients were randomly divided into low dose group and conventional dose group. The CT images of two groups were scored as follows: , The two groups of patients with image quality, radiation dose, the diagnostic report changes in the score and the number of lesions compared. Results: The image quality scores of both groups were greater than 2.5, all meeting the requirements of clinical diagnosis. The excellent rate of image quality in routine dose group was significantly higher than that in low dose group (χ2 = 7.945, P <0.05). The CTDIvol and DLP of the low radiation group were significantly lower than the conventional dose group, the difference was statistically significant (t = 37.381,29.742; P <0.001). There was no significant difference between the number of lesions detected by routine dose scanning and the number of lesions detected by low dose scanning (X2 = 0.099, P> 0.05). Conclusions: Low-dose CT scans are worthy of follow-up in the treatment of tuberculosis to ensure human health and cost savings.