Fig. 24.1
In these figures three thyroid scans showing normal bilobed gland in proper side with moderately low (a), normal (b), and high (c) tracer uptake are displayed, respectively. Qualitative and quantitative analyses reveal different levels of organ/background activity ratio. Using the dedicated method of calculation, thyroid uptake can be evaluated comparing to normal range value (i.e., Sue Clark’s normal value: 0.4–4 %)
24.1.1.2 Case 24.2 Scintigraphic Detection of Unilateral Thyroid Agenesis (Fig. 24.2)
Fig. 24.2
(a) Thyroid scintigraphy with 99mTc-pertechnetate reveals nonvisualization of right lobe (suggesting the absence of right thyroid lobe). Left lobe shows homogeneous tracer uptake; a slightly enlarged shape of the left lobe and isthmus is evident (known as characteristic “hockey stick sign” pattern). (b) Thyroid hemiagenesis is a rare form of thyroid dysgenesis; ultrasonography scan confirms functional finding detected by scintigraphy
Related posts:
Stay updated, free articles. Join our Telegram channel
Full access? Get Clinical Tree
