<div style="text-align:justify;"> <span style="font-family:Verdana;"><strong>Background:</strong> The <sup>99m</sup>TcO<sub>4</sub><sup style=&quo...<div style="text-align:justify;"> <span style="font-family:Verdana;"><strong>Background:</strong> The <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> thyroid scintigraphy is commonly used for hyperthyroidism diagnosis. Uptake value of <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> on thyroid scintigraphy is an indicator of hyperthyroidism activity. Although, the correlation between free T3 value and free T4 value is not necessary clear in primary hyperthyroidism. <strong>Introduction: </strong>This study investigated the correlation between results of blood test and uptake of <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> on thyroid scintigraphy in primary hyperthyroidism. <strong>Methodlogy: </strong>In this retrspective study, uptake was calculated in patients diagnosed with primary hyperthyroidism (Graves’ disease/Basedow’s disease) based on clinical findings, blood tests, thyroid ultrasound, and <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> thyroid scintigraphy (uptake ≥3%) at St. Marianna University School of Medicine Hospital between 1 January 2010 and 31 December 2019. This uptake of <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> was compared with results of blood tests. <strong>Results:</strong> Fifty-four consecutively arriving patients at the hospital (12 men, 42 women;mean age 43.0 ± 14.0 years) were selected. Free T3 (n = 54) was 14.6 ± 6.8 pg/mL, free T4 (n = 53) was 5.0 ± 2.3 ng/mL, and uptake on thyroid scintigraphy was 10.0% ± 7.1%. The correlation coefficients were 0.60 (p < 0.01) between free T4 (all case), 0.39 (p < 0.01) between free T4 (under 7 ng/mL), 0.12 (p = 0.70) between free T4 (above 7 ng/mL) and <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> thyroid scintigraphy uptake. <strong>Conclusion:</strong> In primary hyperthyroidism (Graves’ disease), there is a correlation between free T4 value and <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> thyroid scintigraphy uptake, but there is no correlation in patients with high free T4 level.</span> </div>展开更多
文摘<div style="text-align:justify;"> <span style="font-family:Verdana;"><strong>Background:</strong> The <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> thyroid scintigraphy is commonly used for hyperthyroidism diagnosis. Uptake value of <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> on thyroid scintigraphy is an indicator of hyperthyroidism activity. Although, the correlation between free T3 value and free T4 value is not necessary clear in primary hyperthyroidism. <strong>Introduction: </strong>This study investigated the correlation between results of blood test and uptake of <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> on thyroid scintigraphy in primary hyperthyroidism. <strong>Methodlogy: </strong>In this retrspective study, uptake was calculated in patients diagnosed with primary hyperthyroidism (Graves’ disease/Basedow’s disease) based on clinical findings, blood tests, thyroid ultrasound, and <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> thyroid scintigraphy (uptake ≥3%) at St. Marianna University School of Medicine Hospital between 1 January 2010 and 31 December 2019. This uptake of <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> was compared with results of blood tests. <strong>Results:</strong> Fifty-four consecutively arriving patients at the hospital (12 men, 42 women;mean age 43.0 ± 14.0 years) were selected. Free T3 (n = 54) was 14.6 ± 6.8 pg/mL, free T4 (n = 53) was 5.0 ± 2.3 ng/mL, and uptake on thyroid scintigraphy was 10.0% ± 7.1%. The correlation coefficients were 0.60 (p < 0.01) between free T4 (all case), 0.39 (p < 0.01) between free T4 (under 7 ng/mL), 0.12 (p = 0.70) between free T4 (above 7 ng/mL) and <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> thyroid scintigraphy uptake. <strong>Conclusion:</strong> In primary hyperthyroidism (Graves’ disease), there is a correlation between free T4 value and <sup>99m</sup>TcO<sub>4</sub><sup style="margin-left:-7px;">-</sup> thyroid scintigraphy uptake, but there is no correlation in patients with high free T4 level.</span> </div>