A technique for performing thyroid scintigraphy in the cat using technetium 99m pertechnetate is presented. Two groups of cats were studied: group I—five young adult cats, and group II—five cats, nine to 11 years of age. The resultant scintigrams were uniform in appearance with no significant differences between groups I and II. Computer analysis was performed to determine radioactivity ratios, comparing thyroid with salivary gland and background radioactivity. A consistent thyroid/salivary ratio (T/S) of approximately 1 was obtained for group I and group II. Thyroid/background ratio (T/B) was variable.
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Beck et al. (1985) studied this question.
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