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What characteristics does an abnormal technetium heart scan have?
In an abnormal technetium heart scan, hot spots reveal damage to the heart. The larger the hot spots, the poorer the patient's prognosis.
What care should a patient receive after a technetium heart scan?
The patient can resume normal activities immediately after the test.
What risks exist for the patient in undergoing a technetium heart scan?
The technetium heart scan is not dangerous. The technetium is completely gone from the body within a few days of the test. The scan itself exposes the patient to about the same amount of radiation as a chest x ray.
What is the purpose of a technetium heart scan?
The technetium heart scan is used to evaluate the heart after a heart attack. It can confirm that a patient had a heart attack when the symptoms and pain usually associated with a heart attack were not present; identify the size and location.
How should patients be prepared for a technetium heart scan?
Two to three hours before the scan, technetium is injected into a vein in the patient's forearm.
What is technetium Tc-99m sestamibi scan?
This scan is used for the diagnostic of heart diseases.
What precautions need to be taken when doing a technetium heart scan?
Pregnant women and those who are breastfeeding should not be exposed to technetium.
How is a technetium heart scan done?
The isotope is injected into a vein and absorbed by healthy tissue at a known rate during a certain time period. The radionuclide detector, in this case a gamma scintillation camera, picks up the gamma rays emitted by the isotope.
What characteristics does a normal gastric emptying scan have?
The value is expressed as a percentage of emptying over a period of time. For a technetium-filled egg sandwich, normal emptying is 78 minutes for half the material to leave the stomach, with a variation of 11 minutes.
What characteristics does a normal thallium heart scan have?
A normal thallium heart scan typically shows even distribution of the radioactive tracer throughout the heart muscle, indicating adequate blood flow to all regions of the heart. There should be no areas of reduced blood flow or "cold spots" which could indicate potential blockages or areas of reduced heart muscle function. The scan should also show normal heart wall motion and function.
What characteristics does a normal indium scan of the body have?
The scan should reveal no infection or pathology.
What characteristics does a normal kidney nuclear medicine scan have?
The test reveals normal kidney function for age and medical situation.
