• Test Code - NM0055
  • Test Name - 2-5 mCi
  • Views - 786 Views
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Test Details & Preparation

Scan details and preparation:

  • Thyroid scan is done by small amounts of thyroid radioactive materials(I-131 or I-123) a special camera and a computer to provide information about your thyroid's size, shape, position and function that is often unattainable using other imaging procedures.
  • mCi(milicurie) is the unit of radioactivity, which shows the amount of radiation dosage given in the body. In these case 2-5mCi(0.002-0.005 curie) dosage is given.
  • The imaging scan is performed due to-
  • determine if the gland is working properly
  • help diagnose problems with the thyroid gland, such as an overactive thyroid gland, a condition called hyperthyroidism, cancer or other growths
  • assess the nature of a nodule discovered in the gland
  • detect areas of abnormality, such as lumps (nodules) or inflammation
  • determine whether thyroid cancer has spread beyond the thyroid gland
  • evaluate changes in the gland following medication use, surgery, radiotherapy or chemotherapy
  • The patient is treated with already prepared capsule or a liquid injection and been observed under a gamma camera with transforms the radiation released from the body into image.
  • The capsule is given earlier to the patient and the imaging is done 6 hours,24 hours or 48 hours after that depending upon what kind of scan is going to take place.
  • The camera rolls over the whole body which captures the radiation and transforms into image.
  • The patient should tell the doctor about any major scans such as,CT-Scan,X-ray he/she has gone through, whether she is breastfeeding, whether he/she has allergies to iodine or any related medication.
  • The patient should not take food with much iodine content, and iodine containing medications.

Results and Effects:

  • A normal thyroid scan would show no abnormalities in the size, shape, and location of the thyroid gland. Your thyroid will have an even green color on the image.
  • Abnormal results of a thyroid scan may also indicate:
  • colloid nodular goiter, which is a type of thyroid enlargement due to too little iodine
  • Graves' disease, which is a type of hyperthyroidism
  • painless thyroiditis, which can involve switching between hyperthyroidism and hypothyroidism
  • toxic nodular goiter, which is an enlargement of a nodule on an existing goiter
  • A thyroid test is done with a thyroid scan to know the result better and in a more clean manner.
  • There are no known long term effects of this method.
  • Some radioactive substance remain in the body and they are removed from the body after some hours of scan through urine or stool.


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