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1目的 探讨甲状腺摄 99m Tc O4率测定方法及其与吸 1 31 I率、含碘食物和药物、FT3及 FT4的关系。2方法 采用 SPECT对 5 2例受试者行甲状腺动态显像 30 min,计算各段时间摄 99m Tc O4率。 5 2例中 2 5例忌食含碘食物与药物者用甲状腺功能仪测定吸 1 31 I率。 RIA法检测 5 2例及另外 32例受试者血中 FT3,FT4浓度。 3结果静脉注射 99m Tc O4后 ,10 m in内甲状腺摄 99m Tc O4率快速上升 ,10 min后明显平缓。甲状腺摄 99m Tc O4率与 FT3,FT4呈正相关。未忌食含碘食物与药物者摄 99m Tc O4率降低 (t=4.2 5 8,P<0 .0 0 1)。 4结论 甲状腺显像的同时测 10 min摄 99m Tc O4率简单可行 ,能较好地反映甲状腺功能 ,有一定的实用价值。
1 Objective To investigate the method of 99m Tc O4 in thyroid gland and its relationship with 131I, iodine-containing foods and drugs, FT3 and FT4. 2 Methods SPECT on 52 subjects with thyroid dynamic imaging for 30 min, calculate the time taken 99m Tc O4 rate. 5 2 cases, 25 cases of iodine-free foods and drugs were measured by the thyroid function of smoking 1 31I rate. RIA method was used to detect FT3 and FT4 concentrations in blood of 52 patients and 32 other subjects. 3 Results 99m Tc O4 intravenous injection, 99m Tc O4 rate of 10 m in thyroid uptake increased rapidly after 10 min was significantly flat. Thyroid uptake 99m Tc O4 rate and FT3, FT4 was positively correlated. 99m Tc O4 rate was lower in patients who did not eat iodine-containing foods and drugs (t = 4.2 5 8, P <0.01). 4 Conclusion Simultaneous detection of thyroid imaging 10min 99m Tc O4 rate is simple and feasible, can better reflect the thyroid function, have some practical value.