Objective To discuss the evolution of CT signs before and after treatment of adult active pulmonary tuberculosis. Methods 138 patients with active pulmonary tuberculosis were collected continuously. The spiral CT scan was performed before and after the treatment of anti-tuberculosis. The prognosis of CT signs of pulmonary tuberculosis was observed and compared. Results During the cases of this group, the detection rate of CT signs that showed pulmonary tuberculosis activity was high. After the treatment of anti-tuberculosis, the absorption rates of ground-glass opacity, cavitation, consolidation of lung, tree in bud, fuzzy nodules, thickening of bronchial walls and absorption rate of reticulated micro nodules were all more than 85% after the treatment. There were highly statistically significant differences of detection rate of the CT signs above before and after treatment (P < 0.01). The mainly CT prognosis signs after the active pulmonary tuberculosis was cured were fiber nodules and fiber cord. Conclusion CT examination is helpful for the observation of the prognosis after the treatment of anti-tuberculosise, which can be a radiology method for the evaluation of treatment effectiveness.%目的 探讨成人活动性肺结核治疗前后的CT征象演变.方法 连续收集活动性肺结核患者138例,在抗结核治疗前后分别行螺旋CT检查,对比观察肺结核CT征象的转归表现.结果 本组病例中提示肺结核活动性的CT征象均具有很高的检出率.经过抗结核治疗后,磨玻璃影、空洞、肺实变、树芽征、模糊结节、气道壁增厚、网状微结节吸收率均超过85%.治疗前后上述征象的检出率差异有高度统计学意义(P ＜ 0.01).纤维结节和纤维条索影为活动性肺结核治愈后的主要CT转归征象.结论 CT检查有助于活动性肺结核治疗后病变转归的观察,可作为其治疗效果评价的影像学方法.
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