Benefits of Nuclear Medicine. Nuclear medicine provides your physician with valuable information that help determine your medical condition... before it becomes apparent through other types of testing procedures. Nuclear medicine testing is sensitive to abnormalities in an organ's function or structure. Minimal traces of radioactive material are given usually by intravenous injection. Scanning the activity of the minute trace material is performed using a special detector called a gamma camera, which provides a diagnostic image. The examinations are safe and the tiny quantity of radioactive material decays or is excreted usually within 24 hours. The benefit of early diagnosis through nuclear medicine improves the prospects of effective treatment.
Memorial Hospital's specially trained nuclear medicine team works closely together to give you quality care and to provide your doctor with accurate diagnostic information using the latest technology, for example: tomographic nuclear techniques (Single Photon Emission Computed Tomography -- SPECT) and sophisticated computer processing. You'll need a physician referral for all nuclear medicine testing.
Warning: Please indicate whether you are or may be pregnant when considering this test procedure.
Lung Scan. A lung scan can detect lung abnormalities, particularly pulmonary embolism, or other types of breathing problems.
Although the lung scan is a two part procedure, no preparation is necessary.
- The first part of the examination is called a ventilation scan. You inhale trace amounts of tasteless, odorless, radioactive gas through a mask that enables imaging to be performed.
- The second part of the examination is called perfusion. It requires an injection of radioactive particles which shows the blood perfusion throughout the lungs. Multiple images are taken from front and back.
- The examination requires approximately 1 hour.
- Results of the scan will be given to you by your physician.
Hida Scan. A hida scan is an examination of the biliary system which provides information about the gallbladder and bile ducts.
- Please do not eat 4 hours prior to the procedure.
- You will receive an injection of a radioactive tracer that is secreted by the liver.
- Multiple images of the abdominal area are taken.
- After the completion of the examination, another procedure may be performed to indicate the response of the gallbladder to hormonal stimulation. It requires a second injection.
- The examination requires approximately 1.5 hours.
- Results of the scan will be given to you by your physician.
Bone Scan. The primary reason for a bone scan is to evaluate possible bone abnormalities such as injury, fracture, tumor, or unexplained bone pain. This may be performed as a phased procedure using initial and delayed imaging as indicated under lung scan.
- No preparation is necessary.
- Please bring any pertinent outside X-rays with you.
- You receive an injection of radionuclide that binds to bone.
- You will need to drink plenty of fluids and void often. This reduces radiation exposure to the bladder and improves distribution of radionuclide to target areas.
- Return for imaging 3-4 hours after the injection.
- Bone imaging takes approximately 1 hour.
- A SPECT (Single Photon Emission Computed Tomography) examination may be required for a thorough evaluation. Correlative X-rays also may be ordered at the time of the bone scan to improve diagnostic accuracy.
Cardiac MIBI Stress Test. The MIBI stress test provides your physician with a detailed evaluation of your cardiovascular fitness. It can help your doctor evaluate circulation to your heart muscle in a controlled exercise environment. This test also helps your doctor evaluate the condition of your coronary arteries.
MIBI Stress Test Procedures. The MIBI stress examination is performed in two parts.
- Please do not eat prior to or during the test. If you have diabetes, please check with your doctor.
- When you arrive, you'll need to provide your medical history (including a list of medications) and sign an informed consent.
- An intravenous line is placed in your arm.
- Your chest will be prepared for EKG electrode placement for monitoring your heart activity. Your chest may need to be shaved.
- There will be a physician and trained staff member with you during your test.
- You'll be introduced to a power-driven treadmill or testing bicycle and asked to exercise at a low level initially. The level of exercise will then be slowly increased.
- Your heart rate, blood pressure, appearance, and other observations will be monitored closely before you begin, as you exercise, and after the test.
- If any difficulties are noticed, testing will be discontinued.
- Near the peak of exercise, thallium, a nuclear tracer, is injected into the intravenous line.
- Exercise continues 1 minute after the sesta MIBI injection, and you are taken by stretcher to the Nuclear Medicine Department for 30 minutes of scanning.
- The sesta MIBI injection is repeated again in 3 hours and scanning is repeated an hour later for 30 minutes.
- All MIBI stress examinations use Single Photon Emission Computed Tomography and sophisticated computer processing for data analysis.
- Results of the test will be given to you by your physician.
Persantine MIBI Stress Test. If you are unable to exercise on a treadmill or bike as indicated in the thallium stress test, the same information can be obtained at rest on a stretcher, where you will receive an injection intravenously of a medicine called persantine (dipyridamole) prior to the sesta MIBI injection.
Other Nuclear Medicine Services. Memorial Hospital's nuclear medicine team provides other services which include:
- Gallium Scan -- looks for sites of infection or tumors.
- Indium Labelled White Blood Cell Scan -- evaluates possible infection using the patient's white blood cells, which are radio-labelled.
- G.I. Bleed -- indicates unidentified sources of gastrointestinal bleeding.
- Liver/Spleen Scan -- evaluates functional liver disorders, i.e., cirrhosis, hepatitis, metabolic disorders.
- Labelled Red Cell Scan -- differentiates benign vascular liver lesions from other tumors.
- Meckle's Scan -- identifies a disorder that affects 1-2% of the population... usually children; the symptoms include abdominal pain and rectal bleeding.
- Renal Imaging -- evaluates renal function. It may be performed with a diuretic to determine the possibility of obstruction.
- MUGA Scan -- determines cardiac function and wall motion.
- Thyroid Scan and Uptake -- detects thyroid nodules. Useful for evaluating various thyroid disorders.
- OncoScint Monoclonal Anitbody Scan -- new FDA approved test using radioactive antibodies to detect colon and ovarian cancer in patients for whom other diagnostic tests are inconclusive.