摘要
目的:探讨肺孤立性小结节的18F-脱氧葡萄糖(FDG)正电子发射计算机扫描与CT扫描融合显像(PET-CT)的影像学特点.方法:对经螺旋CT薄层扫描证实的45例肺部孤立性小结节(结节直径≤3cm)患者进行18F-FDG PET-CT显像,结节直径大小为0.8～3.0cm,经临床病理证实肺恶性病变27例,包括肺腺癌13例,鳞癌8例,肺泡癌2例,小细胞未分化癌2例,其他部位转移癌2例.良性病变18例,其中肺结核球10例,肺炎性假瘤6例,肺错构瘤2例.结果:在所检查的45例胸部病灶中,27例恶性病变,在肺内的分布比较弥散,且多发生在外周.在18例良性病变中,10例结核有6例发生于两肺上叶尖后段或下叶背段,4例发生在两肺上叶前段或下叶基底段,均为结核的好发部位.6例炎性假瘤多发生于两肺上叶前段或下叶基底段,也在其好发部位.结合PET的SUV与CT影像学特点共同分析诊断正确率为93.3%.单独以PET的SUV诊断,诊断正确率为82.2%.单独以CT影像诊断,诊断正确率为71.1%.结论:联合应用PET-CT的SUV指标和常规CT对肺结节的良恶性诊断的准确性优于单独CT或单独PET的SUV指标.
Objective：To discuss the speciality of PEY-CT （positron emission tomography-computed tomography） image in patients with isolaed small pulmonary nodules.Methods：PEY-CT scans were obtained for 45 patients. All patients with isolaed small pulmonary nodules were known or suspected by thin planar scanning with spiral computed tomography （CT）.The range of diameter is between 0.8 -3.0era. They had been divided into malignant nodules（27）,benign ones（18）. All the patients had eomparatively eomplete chest PET-CT data. 27 lung eaneer were studied, including 13 adenocarcinoma, 8 squamous carcinoma, 2 alveolar cell carcinoma, 2 small cell lung cancer and 2 metastasis carcinoma. 18 patients with benign pulmonary nodules proved pathologienlly 10 tuberculomas（TB）, 6 inflammato- ry pseudotumors , 2 hamartomas. Results：27 of 45 patients chocked over were diagnosis lung cancer. Lung nodules showed distributing dispersion, most of the nodules occur ambient. Only 4 of 27 patients were centricity lung cancer. The nodules distributed in lung without borderliness. In 18 benign nodules, 6 of 10 tuberculomas（TB） nodules distributed in double lung superior apical back segment or lower lamina back segnent. 4 of 10 tuberculomas distributed in double lung superior anterior segment or lower basic segment. All of the TB nodules were distributed in frequent region. 6 psedotmnor distributed double lung superior arterior segnent or lower basle segment. 26 of 27 lung cancer showed high uptake of FDG, only one of lung cancer showed lightly uptake of FDG. Among the 18 benign nodules there were 3 TB and inflammatory showed high uptake of FDG.. Accuracy of the CT associate with SUV of FDG-PEY imaging in diagriceing the lung nodules was 93.3%, by CT or SUV only was 71.1% or 82.2%. Condttsion： Accuracy of the CT associate SUV of FDC-PET imaging in diagnosing the lung nodules was much higher than that by CT only and even higher than that by SUV of FDG-PET imaging only.
出处
《医学影像学杂志》
2005年第8期669-672,共4页
Journal of Medical Imaging
作者简介
姚树展（1968-），男，山东省巨野县人，毕业于白求恩医科大学，硕士学位，主治医帅，主要从事医学影像诊断
