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目的 利用PET判断恶性肿瘤复发并进行再分期。方法 应用18F FDGPET于 2 3例恶性肿瘤 ,以胸腹部断层显像和标准化摄取值 (SUV)评价 7例 (A组 )无肿瘤复发和 16例 (B组 )经病理和临床证实的肿瘤复发病人。结果 6例无肿瘤复发病人PET表现与正常人相似。 1例放射性肺炎病人于放疗部位可见轻中度放射性摄取增高 ,其他部位未见异常浓聚灶。 16例肿瘤复发病人影像分为三型 :3例仅在原发肿瘤部位复发 ;8例于原发部位同时在其它部位可见肿瘤灶 ;5例原发部位未见异常但在其它部位出现放射性浓聚灶。 11个原发部位复发的肿瘤灶 ,平均SUV 4 38± 1 84,33个其它部位肿瘤灶 ,平均SUV 2 18± 0 96。 16例病人TNM分期 ,Ⅱ期 3例 ,Ⅲ期 4例 ,Ⅳ期 9例。结论 经一次18F FDGPET全身显像即可准确判定有无恶性肿瘤复发。
Objective To determine the recurrence of malignant tumor with PET and to carry out the re-staging. Methods Seventeen patients (group A) with no tumor recurrence and 16 patients (group B) with pathologically and clinically confirmed tumor recurrence were evaluated by using 18F FDG PETET in 23 patients with malignant tumors. Thoracoabdominal imaging and standardized uptake (SUV) . Results Six cases of non-tumor recurrence PET performance similar to normal. One patient with radiation pneumonitis showed mild to moderate radiation uptake at radiotherapy sites and no abnormal focus at other sites. 16 cases of tumor recurrence patients were divided into three types of images: 3 cases of recurrence in the primary tumor site only; 8 cases of tumor at the same time in other parts of the tumor can be seen; 5 cases of primary site without exception, but in other parts of the emergence of radioactive concentration Foci. 11 primary tumor recurrence sites, the average SUV 4 38 ± 1 84,33 other parts of the tumor focus, the average SUV 2 18 ± 0 96. TNM staging of 16 patients, 3 cases of stage Ⅱ, 4 cases of stage Ⅲ, 9 cases of stage Ⅳ. Conclusion 18F FDG PETET can determine the presence or absence of malignant tumor recurrence.