摘要
目的:探讨18F-FDG PET/CT结合高分辨率CT(HRCT)在肺炎型细支气管肺泡癌(PTBAC)诊断中的应用价值,以提高诊断准确率。资料与方法:搜集经病理证实26例PTBAC患者的18F-FDG PET/CT及HRCT影像资料,患者均先行18F-FDG PET/CT显像,其中15例根据诊断需要0~3 d内行HRCT检查,分析两者结合对PTBAC的诊断价值。结果:全组26例患者18F-FDG PET/CT显像检查,确切诊断肺癌9例,恶性不除外13例,肺感染性病变4例,确诊率为34.6%,误诊率较高;其中15例患者18F-FDG PET/CT显像后结合HRCT确切诊断肺癌13例,1例初次诊断感染性病变者后经结合HRCT图像诊断为肺癌,1例18F-FDG PET/CT显像及HRCT均疑为肺炎者,经18F-FDG PET/CT延迟显像后综合评判考虑肺癌,后病理证实;18F-FDG PET/CT结合HRCT诊断正确率达100%。结论:PTBAC的18F-FDG PET/CT显像特点及HRCT表现复杂多样,PET/CT结合HRCT在PTBAC诊断中的应用能够大大提高诊断准确率,减少误诊率。
Objective： To evaluate the application value of ^18F-FDG PET/CT combined with HRCT in diagnosing pneumonia type of bronchioloalveolar carcinoma （PTBAC）. Materials and Methods： The ^18F-FDG PET/CT images of 26 cases with pathologically confirmed PTBAC were studied. Fifteen of the 26 cases were followed up after 0-3 days by HRCT study. The diagnostic accuracy rate of ^18F-FDG PET/CT combined with HRCT were analyzed. Results： According to ^18F-FDG PET/CT imaging, definite diagnosis of malignant was made in 9 cases, no exclusion of malignancies in 13 cases, and definite diagnosis of pulmonary inflammation in 4 cases. The diagnostic accuracy rate of ^18F-FDG PET/CT imaging was 34.6%. The misdiagnosis rate of ^18F-FDG PET/CT was higher. Associating ^18F-FDG PET/CT with HRCT, 13 of 15 cases were diagnosed as malignant tumors. Pulmonary inflammation was diagnosed firstly in 1 case by PET/CT, and then definite diagnosis of malignancy was confirmed by HRCT. In addition, the other one case of malignant tumor was analyzed as pulmonary inflammation by PET/CT and HRCT. However, ISF-FDG PET/CT displayed metastasis during the delay scanning, which was approved by pathology. Based on ^18F-FDG PET/CT and HRCT results, 15 cases were diagnosed correctly. Conclusion： PTBAC displays a variety of characteristics in lSF-FDG PET/CT and HRCT. Combining ^18F-FDG PET/CT with HRCT is reasonable and practicable for PTBAC diagnosis, which may be due to the synergistic effect on diagnosing PTBAC and can greatly improve the diagnostic accuracy.
出处
《中国临床医学影像杂志》
CAS
2012年第10期695-698,共4页
Journal of China Clinic Medical Imaging
