Regional left ventricular function in patients with hot technetium 99M thyroid scan

In this work, 17 hyperthyroid patients underwent technetium 99m thyroid scan after stoppage of treatment for two weeks were studied. The development of enhanced left ventricular systolic and diastolic function in patients with hyperthyroidism was consistent with a direct trophic effect of thyroid hormone on the myocardium. Technetium 99m thyroid scan was a valuable measure in expecting early alterations in diastolic left ventricular function which might be affected before the systolic one