The early phase (20 min) shows an intense accumulation of the radiopharmaceutical in the thyroid gland with relatively increased uptake in the lower part of the left thyroid lobe. The late phase (120 min) shows a delayed washout of the radiopharmaceutical from the thyroid gland while registering a focus of residual activity in the caudal part of the left thyroid lobe.

  Part of: Botushanova A, Popov V, Grudeva Z, Botushanov A, Troev D (2022) The role of 18F-FDG PET/CT and single isotope 99mTc-tetrofosmin scintigraphy combined with SPECT in diagnosis of multiple endocrine neoplasia type 1 syndrome. Folia Medica 64(1): 181-186.