论文部分内容阅读
目的评价甲状腺99Tc4mO-SPECT显像与CT对甲状腺癌的诊断价值。方法对32例同期兼作甲状腺99Tc4mO-SPECT显像与CT扫描的甲状腺癌影像学表现进行对比分析,并与临床手术及病理结果对照。结果32例甲状腺癌共有39个病灶,CT检出33个病灶(85%),核素扫描检出23个(59%),两种检查方法在病灶检出方面差异有统计学意义(P=0.002)。CT扫描显示8例出现瘤周“半岛状”瘤结节,4例瘤周“残圈”征;7例细颗粒钙化,2例粗钙化,4例混合性钙化,20例肿瘤侵犯周围组织器官,15例出现颈部淋巴结转移,诊断符合率72%9。9Tc4mO-SPECT显像显示冷结节16例,凉结节3例,结节性甲状腺肿8例,甲状腺显像未见异常2例,2例显影模糊,甲状腺区未见显影1例,诊断符合率为59%。结论甲状腺癌的CT表现具有一定特征性,CT在对甲腺病变定性诊断方面优于99Tc4mO-SPECT显像;作为常规甲状腺疾病检查的99Tc4mO-SPECT平面显像主要用于筛选诊断,对甲状腺肿瘤定性诊断作用有限,有必要作进一步检查。
Objective To evaluate the value of thyroid 99Tc4mO-SPECT imaging and CT in the diagnosis of thyroid cancer. Methods Thirty-two thyroid 99Tc4mO-SPECT images and thyroid CT images were analyzed retrospectively and compared with clinical and pathological findings. Results There were 39 lesions in 32 thyroid carcinomas, 33 lesions (85%) in CT and 23 (59%) in radionuclides. There was significant difference between the two methods in the detection of lesions (P = 0.002). In CT scan, 8 cases showed perineal “peninsula” tumor nodules and 4 cases had peritubular ring signs of peritumor. Seven cases of fine granular calcification, two cases of coarse calcification, four cases of mixed calcification and 20 cases of tumor infiltrated the surrounding tissues and organs , 15 cases of cervical lymph node metastasis, the diagnostic accuracy of 72% 9.9Tc4mO-SPECT imaging showed 16 cases of cold nodules, cold nodules in 3 cases, nodular goiter in 8 cases, thyroid imaging showed no abnormal in 2 cases , 2 cases developed blurred, no thyroid region developed in 1 case, the diagnostic coincidence rate was 59%. Conclusions The CT findings of thyroid cancer have certain characteristics. CT is superior to 99Tc4mO-SPECT in the qualitative diagnosis of thyroid lesions. 99Tc4mO-SPECT planar imaging, as a routine thyroid disease examination, is mainly used for screening and diagnosis of thyroid tumors Diagnostic effect is limited, it is necessary for further examination.