Page 153 - Atlas of Small Animal CT and MRI

Thyroid and Parathyroid 143

Figure 1.11.1 Normal Thyroid Glands (Canine) CT
On unenhanced CT images, normal thyroid
lobes are typically hyperattenuating as a
result of iodine content (a,b: arrowheads).

(a) CT, TP (b) CT, DP

Figure 1.11.2 Normal Thyroid Glands (Canine) MR
Left and right thyroid lobes are seen as small,
roughly triangular structures on transverse T1
and T2 images (a,b: arrows) located adjacent
to the tracheal wall and ventromedial to the
common carotid arteries. Right (c: arrow) and
left (d: arrow) thyroid lobes are well delineated
on dorsal plane T1 3D‐SPGR images, seen
medial to the common carotid arteries (c,d:
arrowhead), which course obliquely through
this imaging plane.

(a) T1, TP (b) T2, TP

(c) T1, SPGR, DP (d) T1, SPGR, DP

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