- How is thyroid scintigraphy done?
- Preparation for scintigraphy
- Evaluation of scintigraphy results
- Indications and contraindications
- Side Effects of Scintigraphy
Many patients are interested in thyroid scintigraphy, which
it is how it is carried out and why it is needed. Via
this procedure, the doctor may identify the patient abnormal
the location of the thyroid gland, the presence of nodes in it,
pathological changes. To do this, the patient is administered
contrast agent or he swallows a special capsule, for
account of which is the necessary study.
How is thyroid scintigraphy done?
That the patient was ready for the procedure and was not afraid of it,
the doctor advises the patient and explains how to conduct
scintigraphic study. For a qualitative survey
thyroid gland and identify pathological changes and disorders
Special radioactive substances are administered to the patient in a complex with
drugs so that they reach the bloodstream
required for the study of the body. Via специальной, хорошо
equipped with equipment, the doctor makes conclusions about the state of the thyroid
glands of the patient.
The isotope that is injected into the patient’s body is
safe. Also, after administration, it quickly collapses and
excreted from the body. Therefore side effects when conducting
scintigraphy is significantly less than radiographic
research. In very rare cases, the patient with the introduction
contrast agents are observed allergic reactions.
To prepare the patient for the procedure takes no more than 30
minutes This period of time is necessary to ensure that the drug
reached the body and began to work. The survey itself lasts no more
In order for scintigraphy to be most reliable, it is necessary to strictly
adhere to the following recommendations:
- One month before the procedure, you must refuse all
drugs that include iodine;
- If you have heart problems, you must give up
use of blockers.
If medication is vital, the doctor discusses tactics.
treatment during this period and conducts the replacement of essential drugs
funds for similar options. Proper preparation for
scintigraphy will allow you to get the most reliable results
Radioisotope research by this method conducts
highly qualified specialist who accurately selects for
for each patient, the dosage of the contrast agent, considering all
safety requirements carries out a survey.
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The patient lies on a couch under the equipment. 20 distance away
cm from it is a gamma camera that will capture
indicators in the thyroid gland. Inside the camera is a counter,
who conducts the scan, and all the figures obtained
sends to the computer. The program draws scintigrams as
three-dimensional image of the body. Image shows location
introduced isotope, the accumulation of which in the gland allows
calculate which areas in the body are “warm”, “hot” or
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Preparation for scintigraphy
Scintigraphic study requires special patients
preparation. One month before the procedure is necessary
- From all marine products;
- For the month to abandon the use of vitamins, which include
iodine, lugol, betadine;
- For 3 months, do not use the drug Cordaron;
- For 4 weeks, stop taking thyroid hormones;
- For a week, stop taking Streptotsid, Biseptol, Aspirin,
Nitroglycerin, Monosan, Nitrosorbide, Mercazolil.
It is important to follow all recommendations so that the scintillation
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Evaluation of scintigraphy results
Thyroid scintigraphy makes it possible to determine whether
patient nodular formation. Also research gives
understanding of the functioning of the body, the presence of pathologies,
growth and development of formations. When scintigraphy nodes are divided into
two kinds: cold and hot.
If the nodes are “cold”, the radioactive substance does not accumulate in
knots. So, part of this gland has ceased to function, and the tissue
for this reason does not absorb isotope. It indicates colloidal
goiter and predisposition to the formation of tumors that have
benign course. �”Hot” nodes accumulate entered
contrast agent indicating abnormal functioning
thyroid gland. Nodes of this type indicate the presence of a patient
toxic adenoma or toxic multinodular goiter.
If the scintigraphy shows a slight isotope absorption,
The patient is diagnosed with hypothyroidism. �”Warm” sites suggest that
that there are no changes in the work and state of the thyroid gland and
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Indications and contraindications
Scintigraphy is performed as an auxiliary diagnostic
exercise to explore the work of the thyroid and at
the need to identify its violations. It is prescribed if
it is necessary:
- Consider the state of the retrosternal lobes of the gland;
- Fully determine the condition of the organ;
- Identify the presence or absence of oncology;
- To diagnose the degree and development of nodes.
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On the identification of the patient thyrotoxicosis possible
Существуют противопоказания, которые учитывают at
study of the patient. These include:
- Intolerance to one of the components of the contrast
- Недавние исследования организма с atменением контрастного
Pregnant women can do research in
exceptional cases. Nursing mother after scintigraphy is not
should breastfeed the baby throughout the day.
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