异位甲状腺的 CT 衰减值低于正常甲状腺。
Ectopic thyroids have lower computed tomography attenuation values than orthotopic thyroids.
机构信息
Division of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
Department of Oral Pathology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
出版信息
Endocrine. 2018 Dec;62(3):546-551. doi: 10.1007/s12020-018-1747-5. Epub 2018 Sep 10.
PURPOSE
To determine whether ectopic thyroid had the same computed tomography (CT) value as orthotopic thyroid.
METHODS
Twenty-one patients with 23 ectopic thyroids and 23 controls with orthotopic thyroids underwent CT scans and were included in this retrospective study. The CT images were reviewed in a blinded fashion by two radiologists. Independent-Samples T-test was used for comparison of CT attenuation values between two groups.
RESULTS
Ectopic thyroids had significantly lower non-enhanced attenuation (91.04 ± 5.97 Hounsfield Units vs. 106.56 ± 4.06 Hounsfield Units, P = 0.038) and contrast-enhanced attenuation (141.32 ± 6.42 Hounsfield Units vs. 169.82 ± 4.30 Hounsfield Units, P = 0.001) values than orthotopic thyroids.
CONCLUSIONS
Ectopic thyroids have lower CT attenuation values than orthotopic thyroids probably due to the structural or functional abnormalities. The dysgenesis and pathological changes of the ectopic thyroids may contribute to functional deficiency which finally leads to decrease of the CT attenuation values.
目的
确定异位甲状腺的 CT 值是否与正常甲状腺相同。
方法
本回顾性研究纳入了 21 例 23 个异位甲状腺和 23 个正常甲状腺的患者。由两名放射科医生对 CT 图像进行盲法评估。采用独立样本 t 检验比较两组 CT 衰减值。
结果
异位甲状腺的平扫 CT 值明显更低（91.04±5.97 Hounsfield 单位 vs. 106.56±4.06 Hounsfield 单位，P=0.038）和增强 CT 值更低（141.32±6.42 Hounsfield 单位 vs. 169.82±4.30 Hounsfield 单位，P=0.001）。
结论
异位甲状腺的 CT 衰减值低于正常甲状腺，可能是由于结构或功能异常所致。异位甲状腺的发育不良和病变可能导致功能缺陷，最终导致 CT 衰减值降低。
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