Fig. 1
From: 18F-FDG PET/CT image findings of a dog with adrenocortical carcinoma
Computed tomography (CT) images of right adrenal mass of the dog. a On pre-contrast CT image, the adrenal mass (an arrow head) showing a hyperattenuated peripheral region and homogeneously hypoattenuated central region. The size of the adrenal mass was 4.3 × 6.8 cm in diameter. b On post-contrast CT image, contrast enhancement (arrow) occurred from the peripheral region of the mass