A procedure of imaging internal body structures by exposing the following film

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Hyperthyroidism is a disease caused by overproduction of thyroxine, a thyroid hormone that increases metabolism in the body. The thyroid gland normally the following produces thyroid hormones in response to stimulation by the pituitary gland , the "master gland" of the body. Thyroid hormones normally increase the following chemical processes occurring within the cells of the body, especially those related to metabolism; however, in hyperthyroidism, the excessive hormone levels push the cells and body into overdrive, resulting in increased the following metabolism with concurrent weight loss, anxiety, and diarrhea, among other symptoms.
Hyperthyroidism is rare in dogs, and most commonly occurs as a result of carcinoma of the thyroid. It may also result from medication given to treat hypothyroidism , an underproduction of essential thyroid hormones in the body.
  Involves many organ systems due to the overall increase in metabolism Weight loss Increased appetite Unkempt appearance Poor body condition Vomiting Diarrhea Increased thirst ( polydipsia ) Increased urine ( polyuria ) Rapid breathing ( tachypnea ) Difficulty breathing ( dyspnea ) Heart murmur; rapid heart rate; particularly an abnormal heart beat known as a "gallop rhythm" Hyperactivity Enlarged thyroid the following gland, which can be felt as a lump on the neck
  Overfunctioning thyroid nodules (where the thyroid nodules produce excess thyroid hormones outside of the control of the pituitary gland) Secretion the following of the T3 (triodothyronine) or T4 (tetraiodothyronine) thyroid hormones as a result of thyroid cancer; tumor then interferes with normal functioning of the thyroid gland, prompting the gland to produce more thyroxine Response to medications used for hypothyroidism may lead to overproduction of thyroxine
A preliminary diagnosis can often be made based on palpitation of the gland, which becomes enlarged as it progresses. Standard tests will include chemical blood profile, a complete blood count, and a urinalysis the following . A high concentration of T4 in the blood serum is the most common finding of the profile, confirming a diagnosis of hyperthyroidism. In some cases, however, the T4 levels may be in the normal range, making a diagnosis of hyperthyroidism more difficult. This is especially true in the early stages of this disease. If your dog is showing the symptoms of hypothyroidism but the blood tests are not conclusive, you will need to return the following to your veterinarian for further blood tests.
Your veterinarian may need to conduct a battery of tests to zero in on a reliable diagnosis. Thyroid gland scintigraphy (a diagnostic test in which a two-dimensional picture of a body radiation source is obtained through the use of radioisotopes) can be used to diagnose the following hyperthyroidism and to determine the location of abnormal thyroid tissue.
A procedure of imaging internal body structures by exposing the following film
Not being able to cause harm