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. 2016 Jul 8;95(27):e4170. doi: 10.1097/MD.0000000000004170

Figure 5.

Figure 5

Comparison of 99mTcO4 %thyroid uptakes between the thyroid uptake system and the SPECT/CT. (A) The %thyroid uptake determined by the thyroid uptake system, reflecting the anterior neck counts, was significantly greater than that determined by SPECT/CT, which only measured thyroid activity (P < 0.0001). The summation of %uptakes from the thyroid and the extra-thyroid tissues (salivary glands and oral cavity saliva) (B) generated a summed %uptake with the SPECT/CT, which was equivalent to the %uptake determined by the thyroid uptake system (P = 0.2773). Data are mean ± standard error of the mean (∗P < 0.0001) (yellow = parotid glands, orange = submandibular glands, and green = saliva in oral cavity). %Thyroid uptakes determined by the thyroid uptake system (C) and by the SPECT/CT (D) were significantly greater in patients with Graves disease than in patients with thyroiditis (∗∗P = 0.0003). There was a systemic overestimation of %thyroid uptake by the thyroid uptake system compared with SPECT/CT. CT = computed tomography, SPECT = single-photon emission computed tomography, TUS = thyroid uptake system.