Relationship between selected echocardiographic variables before and after radioiodine treatment in 91 hyperthyroid cats.

Ninety-one spontaneously hyperthyroid cats were studied by two-dimensional and M-mode echocardiography with in a week before and 2-3 months following oral radioiodine administration. A statistical search was made for a correlation between any of the linear echocardiographic variables (pre- or posttreatment) and the serum total thyroxine concentrations (pre- or posttreatment). No clinically useful relationships were found.

Relationship between orally administered dose, surface emission rate for gamma radiation, and urine radioactivity in radioiodine-treated hyperthyroid cats.

Objective: To determine the relationship between surface emission rate of gamma radiation and urine concentration of I131 (urine radioactivity) during the period 7 to 21 days after oral or SC administration of I131 to hyperthyroid cats.

Animals: 47 hyperthyroid cats administered I131 PO and 24 hyperthyroid cats administered I131 SC.

Procedure: A dose of I131 (1.

Evaluation of relationships between pretreatment patient variables and duration of isolation for radioiodine-treated hyperthyroid cats.

Objective: To determine relationships between commonly measured pretreatment variables and duration of isolation for unrestricted dismissal after oral administration of iodine 131 (131I) for treatment of hyperthyroidism in cats.

Animals: 149 hyperthyroid cats treated with 131I.

Procedure: A dose of 131I (2.