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目的 评价甲状腺/右上肺摄锝比值（T/L）诊断甲状腺功能亢进（甲亢）的能力并与甲状腺/唾液腺摄锝比值（T/S）比较。方法 100例临床初诊怀疑甲亢，且排除口腔疾病和结节性甲状腺疾病者行甲状腺功能显像，并计算T/S与T/L。所有实验对象在甲状腺功能显像1周内明确诊断，45人被临床诊断为甲亢，55人甲状腺功能正常。结果100例受试者的T/S与T/L值具有高度相关性（r=0.937，P<0.001）。55例甲状腺机能正常人与45例甲亢患者T/L范围分别为2.0~8.5、10.1~103，二者之间没有重叠，诊断甲亢的灵敏度与特异性分别为100%。上述两组受试者T/S范围分别为1.1~8.7、4.5~38.1，有13%的受试者处于重叠范围。以重叠范围的中值作为诊断甲亢的下限，灵敏度和特异性分别为88.9%与94.5%。以临床诊断为对照，T/L与T/S诊断甲亢的正确指数有显著差异，T/L更准确。结论 T/L比T/S诊断甲状腺甲亢更为准确。
Objective To evaluate the diagnostic value of thyroid / right upper lung uptake ratio (T / L) for hyperthyroidism (Hyperthyroidism) and to compare with thyroid / salivary gland uptake ratio (T / S) Methods Thirty patients with suspected initial diagnosis of hyperthyroidism were enrolled in this study. Thyroid function imaging was performed in patients with oral diseases and nodular thyroid diseases, and T / S and T / L were calculated. All subjects were diagnosed within 1 week of thyroid imaging, 45 were clinically diagnosed as hyperthyroidism, and 55 had normal thyroid function. Results The T / S and T / L values of 100 subjects were highly correlated (r = 0.937, P <0.001). The T / L range of 55 cases with normal thyroid function and 45 cases with hyperthyroidism were 2.0 ~ 8.5 and 10.1 ~ 103, respectively. There was no overlap between them. The sensitivity and specificity of diagnosing hyperthyroidism were 100%. The T / S ranges of the two groups were 1.1 ~ 8.7 and 4.5 ~ 38.1, respectively, and 13% of the subjects were in the overlapping range. The median of overlap range was used as the lower limit of diagnosis of hyperthyroidism with sensitivity and specificity of 88.9% and 94.5%, respectively. The clinical diagnosis as a control, T / L and T / S correct index of hyperthyroidism were significantly different, T / L more accurate. Conclusion T / L is more accurate than T / S in diagnosis of thyroid hyperthyroidism.