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  • Author or Editor: Joshua W. Tumulty x
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A 9-year-old female domestic shorthair cat was evaluated for progressive hyporexia, lethargy, weight loss, and intermittent vomiting and regurgitation of 2 weeks' duration. The cat's vaccination status was adequate, and there was no history of notable medical illnesses or travel outside of the state of New York. Results of physical examination indicated that the cat was approximately 7% dehydrated and had a moderate amount of dental tartar. A gallop rhythm was detected during auscultation of the thorax. Abnormalities detected on CBC and serum biochemical analyses included a relative erythrocytosis and moderately high serum creatine kinase activity, respectively. Survey radiographs

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in Journal of the American Veterinary Medical Association


OBJECTIVE To determine the usefulness of medical infrared thermal imaging (MITI) as a screening tool for hyperthyroidism in cats, evaluate the need for hair clipping over the ventral aspect of the neck to achieve optimal images, and determine whether there is a change in thermal patterns at 1 and 3 months after radioactive sodium iodide I 131 treatment.

ANIMALS 17 cats with and 12 control cats without hyperthyroidism.

PROCEDURES All cats underwent MITI first with the hair present and then after the hair was clipped. Each cat with hyperthyroidism was subsequently appropriately treated SC with radioiodide; reevaluations, including MITI before and after hair clipping and measurement of serum thyroxine concentration, were performed 1 and 3 months after treatment.

RESULTS The MITI had 80.5% and 87.5% accuracy in differentiating hyperthyroid cats from clinically normal cats before and after the hair over the ventral aspect of the neck was clipped. Among cats with an initial serum thyroxine concentration > 4.0 μg/dL, the success rate for MITI-detected response to radioiodide treatment at the 1-month reevaluation was 92.86% in unshaved cats and 85.71% in shaved cats. The success rate for MITI-detected response to radioiodide treatment at the 3-month reevaluation was 100% in unshaved and shaved cats.

CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that MITI was successful in differentiating between hyperthyroid cats and clinically normal cats and identifying patients with thyroxine concentration within reference interval after radioactive sodium iodide I 131 treatment.

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in American Journal of Veterinary Research