What is the PET scan?
by magnusmedi ¡¤ January
18 Nike
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A positron emission tomography (PET) scan is an imaging test that allows your
doctor to check how your tissues and organs are functioning. A PET scan uses a
radioactive drug (tracer) to show this activity. This scan can sometimes detect
disease before any other imaging tests. The scan uses a special dye containing
radioactive tracers. These tracers are either swallowed, inhaled, or injected
into a vein in your arm depending on what part of the body is being examined.
Certain organs and tissues then absorb the tracer. When detected by the PET
scanner, a doctor can see how well your organ and tissues are working.
The PET test is most commonly used in cancer
treatment Nike
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MRI scan, a PET scan can produce multidimensional, color images.
Why is PET scan performed?
PET scan is done to examine the chemical activity in parts of your body. It
is the most effective way of examining. It helps identify a variety of
conditions Nike
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brain disorders. PET scans show problems at the cellular level, giving your
doctor the best view of complex systemic diseases.
PET scan is commonly used:
1. Cancer
2. Alzheimer¡¯s disease
3. Heart disease
4. Medical research differences
between
PET
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CT scan and MRI can access to the body organs size and shapes and tissues but
they cannot access how these works. PET scan shows how an organ works, but
without MRI and CT scan it is difficult to pinpoint the exact location of
activity within the body. The combined PET scan and CT scan will give the more
clear picture of the patient¡¯s situation.
Modern PET scanners are now available with integrated CT scanners which can
create two sets of precisely matched images. There are also integrated PET-MRI
scanners which are currently only used for head and brain imaging.
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People with other health condition and Allergies
People who are allergic to iodine,
aspartame Nike
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beforehand. Those who have allergies with iodine tracer typically receive a
tracer made up of diluted barium sweetened with saccharin.
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People have an allergic reaction to the iodine tracer include people with:
1. Allergies
2. Asthma
3. Heart disease
4. Dehydration
5. A history of allergic reactions to PET scans
6. Kidney disease
7. Multiple myeloma
8. Blood cell disorders
How to prepare for PET scan
The Doctor will provide you with the complete instruction on how to be
prepaid for PET scan, and what precautions should you take before TEST scan.
24 hours before the appointment, you will be asked to restrict
low-carbohydrate, no-sugar diet. You should avoid following food and beverages:
1. Rice
2.
Milk Nike
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3. Fruit juices
4. Alcohol
5. Cereal
6. Pasta
7. Bakery items
8. Candy, chewing gums
On the day of scanning you will want to arrive at least 30 mins in advanced
so that you can settle comfortably, Generally, PET scan takes around an hour and
a half to perform from start to finished.
However Nike
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If you are taking anaesthesia for the procedure, don¡¯t eat or drink anything
the entire morning. If you are receiving anaesthesia you will still want to
refrain from eating before six hours of PET scan. You will be able to drink
water and take medicines as recommended.
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Other Consideration
1. If you have diabetes: If your glucose levels are high, the radiotracer
will not be taken up efficiently in
cells Nike
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required.
2. If you are taking vitamins and herbal supplements
3. Tell your doctor if you are pregnant
4. If you are breastfeeding
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