What is bone scintigraphy? Bone scintigraphy is a subtype of scintigraphy. Bones and their metabolism can be assessed very well with it. For this purpose, a radioactively labeled substance (radionuclide) is injected into the patient via a vein. The higher the local metabolic activity, the more it is deposited in the bone. The radiation emitted … Bone Scintigraphy: Definition, Reasons, Procedure
Tracers are artificial endogenous or exogenous substances that are radioactively labeled to participate in the patient’s metabolic processes after being introduced into the body. Tracer is the English word for trace. Based on the traces and markings that the tracers leave in the body of the diseased patient, they enable and facilitate various examinations for … Tracers: Treatment, Effects & Risks
Nuclear medicine includes nuclear physical procedures and radioactive substances whose use in medicine is in diagnostics. This also includes the open radionuclides. Radiation protection in connection with medical, biological and physical principles represents another chapter of nuclear medicine. What is nuclear medicine? Nuclear medicine includes nuclear physical procedures and radioactive substances whose use in medicine … Nuclear Medicine: Treatment, Effects & Risks
Definition Positron emission tomography (PET) is a special imaging examination procedure that can be used to visualize metabolic processes in the body. For this purpose, the patient is administered low-level radioactive glucose via the vein, made visible with a measuring unit and the information is processed into a spatial image. The sugar is distributed throughout … Positron emission tomography (PET)
Functionality of PET In positron emission tomography, good preparation and compliance with various measures are crucial for good image quality and informative value. Current blood values (especially kidney, thyroid and sugar values) must have been determined in advance. On the day before the examination, any physical exertion must be avoided. In addition, no more food … Functionality of PET | Positron emission tomography (PET)
Evaluation of the images The particles released during positron emission tomography are detected by a special detector. A connected computer calculates the incoming information and generates an image that shows the metabolic activity. Areas with high activity are displayed brighter than those with low activity. Some organs such as the brain or the heart naturally … Evaluation of the images | Positron emission tomography (PET)
Iodine is a chemical element with the element symbol I and belongs to the group of halogens. Naturally, the chemical element iodine occurs in bound form in its salts. Examples of the salt forms of iodine are potassium iodide and sodium iodide. Iodine is supplied with food and is an indispensable element for the animal … Iodide
Pharmacokinetics and pharmacodynamics (mode of action) As already described, the diet contains almost exclusively iodine in the form of its salts, i.e. in the form of iodide. In the gastrointestinal tract, this is absorbed and passes into the so-called extracellular fluid, i.e. the fluid that is present between the cells. Iodine, which is released by … Pharmacokinetics and pharmacodynamics (mode of action) | Iodide
Effect of excess iodine on the synthesis of thyroid hormones During normal functioning of the thyroid gland, a permanent excess of iodine (several hundred milligrams with an actual daily requirement of 200 micrograms) inhibits iodine absorption and thyroid hormone production. This effect is known as the Wolff-Chaikoff effect. In the past, this effect was used … Effect of excess iodine on the synthesis of thyroid hormones | Iodide
Fields of application of iodide preparations If the formation of an enlargement of the thyroid gland is to be prevented, a daily intake of 100 μg or also 200 μg iodide is sufficient. If enlargement is already present, 200 μg to 400 μg are taken daily to reduce the size of the thyroid gland. In … Fields of application of iodide preparations | Iodide
Caution when taking iodine preparations Before starting to take an iodine preparation, it should be examined whether there is hyperthyroidism (overactive thyroid gland). This can be done with a simple blood sample. It should also be checked whether there is a nodular goiter, as in individual cases the use of iodine can lead to hyperthyroidism. … Caution when taking iodine preparations | Iodide
Interactions Before starting to take iodide, the treating doctor or pharmacist should be informed about other medicines, including non-prescription medicines, that you are taking. During treatment of hyperthyroidism, iodine deficiency causes an increased response to drug therapy, whereas excess iodine reduces the response to drug therapy. For this reason, any administration of iodine should be … Interactions | Iodide