| 李剑明,李亚明,裴著果.脑转移瘤的18F-FDG PET/CT图像特点[J].中国医学影像技术,2009,25(11):2102~2105 |
| 脑转移瘤的18F-FDG PET/CT图像特点 |
| Imaging features of 18F-FDG PET/CT in patients with brain metastases |
| 投稿时间：2009-02-08 修订日期：2009-08-17 |
| DOI： |
| 中文关键词: 脑肿瘤 肿瘤转移 体层摄影术,X线计算机 18F 氟脱氧葡萄糖 |
| 英文关键词:Brain neoplasma Neoplasm metastasis Tomography, X-ray computed Fluorodeoxyglucose F18 |
| 基金项目: |
|
| 摘要点击次数: 2709 |
| 全文下载次数: 1120 |
| 中文摘要: |
| 目的 分析脑转移瘤18F-FDG PET/CT全身扫描的图像特点。方法 对25例脑转移瘤患者的18F-FDG PET/CT全身扫描的头部图像进行分类。依据CT表现将瘤灶分为高密度结节、等密度结节、囊性密度结节及无结节型四种形式,并观察病灶周边水肿情况;根据病灶摄取18F-FDG程度将PET图像分为0级、1级、2级和3级四级;分析两者之间的对应关系。结果 本组发现脑转移瘤病灶共53个,其中高密度结节、等密度结节、囊性密度结节和无结节型各占16.98％(9/53)、52.83％(28/53)、9.43％(5/53)和20.75％(11/53)。无结节型脑转移病灶摄取18F-FDG情况均为0级(11/11,100％),高密度结节摄取18F-FDG程度均不超过2级(9/9,100％),而等密度结节周边无论有或无水肿,摄取18F-FDG均不低于1级(28/28,100％),并以3级居多(20/28,71.43％);囊性密度结节摄取18F-FDG程度与囊壁厚度有关。结论 脑转移瘤的18F-FDG PET/CT表现形式多样,掌握其PET与CT图像间的对应关系及特点有助于准确诊断。 |
| 英文摘要: |
| Objective To analyze the imaging features of 18F-fluorodeoxyglucose (FDG) PET/CT of whole body scan in patients with brain metastases. Methods Head images of whole body PET/CT scan of 25 patients with brain metastases were classified according to CT or PET images. Lesions of brain metastases were classified into four types: high-density nodules, iso-density nodules, cystic-density nodules and none-nodules according to CT characteristics, and the appearances of edema around the lesions were also observed. The uptake of 18F-FDG in the lesions of PET images were classified into 0, 1, 2 and 3 grades according to uptake degrees. The relations between CT types and the uptakes of 18F-FDG of all lesions were analyzed. Results A total of 53 lesions were detected. High-density nodules, iso-density nodules, cystic-density nodules and none-nodules occupied 16.98% (9/53), 52.83% (28/53), 9.43% (5/53) and 20.75% (11/53) in this group, respectively. None-nodule lesions present as 0 grade of 18F-FDG uptake (11/11, 100%), high-density nodules showed ≤2 grade uptake of 18F-FDG (9/9, 100%), whereas lesions of iso-density nodules with or without edema had obvious accumulations of 18F-FDG not less than 1 grade (28/28, 100%), with the majority of them was 3 grade (20/28,71.43%) uptakes. The degree of uptake of 18F-FDG in cystic-density nodules was related to the wall thickness of lesions. Conclusion The imaging features of 18F-FDG PET/CT in patients with brain metastasis are diverse. Mastering the features and the relationship between PET and CT images would be helpful to accurate diagnosis. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
