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The images are developed based on the detection of energy emitted from a radioactive substance given to the
patient either intravenously or by mouth. Generally, radiation to the patient is similar to that resulting from
standard x-ray examinations.
What are some of the common uses of the procedures?
Nuclear Medicine images can assist the physician in diagnosing diseases. Tumors, infection, and other
disorders can be detected by evaluating organ function. Specifically, nuclear medicine can be used to:
- Analyze kidney function
- Image blood flow and function of the heart
- Scan lungs for respiratory and blood flow problems
- Identify non-functioning gallbladder
- Evaluate bones for fracture, infection or metastatic disease
- Identify bleeding into the bowel
- Measure thyroid function to detect an overactive or underactive thyroid
- Measure how well the stomach is emptying
How does the procedure work?
You are given a small dose of radioactive material, usually intravenously but sometimes orally, that localizes
in specific body organ systems. This radioactive material collects in the organ of concern and gives off energy
known as gamma rays. The gamma camera detects the rays and works with a computer to produce images and measurements
of organs and tissues. One of the great things about the radiopharmaceuticals is that people don't have
reactions to them. Very small amounts of radioactivity can be used to obtain optimal image quality because of the
sensitivity and sophistication of the imaging equipment.
Depending on which type of scan is being performed the imaging will be done either immediately, a few hours later,
or even several days after the injection. Imaging times vary, generally ranging from 30 to 90 minutes. While the images
are being obtained you must remain as still as possible. After the procedure a physician with specialized training in
nuclear medicine checks the quality of the images to ensure that an optimal diagnostic study has been performed.
How should I prepare for the procedure?
Several procedures in Nuclear Medicine require special preparation such as not eating or drinking prior to your
test. Your physician will be given the prep you must follow when the procedure is scheduled.
Many nuclear studies require delayed imaging that might not be reflected on your initial schedule. If these delays
apply to your study, your schedule will be accommodated the best we can while still providing the best exam for you.
Each individual patient and study has unique concerns that will be addressed before your study begins. If you
leave the department and find you have more questions, please feel free to contact Nuclear Medicine at 517.364.2973. If
you have questions regarding films, please call 517.364.2316.
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