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PET Scans (Positron Emission Tomography)
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For nearly 30 years, Cancer Treatment Centers of America has been dedicated to finding the right combination of personalized cancer treatments for their patients. Call (877) 399-6937 or click here to learn more about treatment options.
PET scan image by Raziel
Positron Emission Tomography (PET) is a method of scanning the body for tumors. It uses a machine capable of detecting gamma rays – a type of radiation – and uses these rays to locate cancerous cells.
When a patient has a PET scan, he or she will be injected with radioactive glucose (a sugar). Glucose injected into the veins will circulate through the body quickly and be absorbed into the cells that need the most energy. Since cancer cells grow faster and demand more nourishment than any other cell in the body, tumors will absorb the majority of the radioactive glucose.
This glucose emits positrons (positive electrons) as the radioactive molecule attached to it breaks down. These positrons collide with electrons in the body. When this happens, a gamma ray is created.
The patient lies down on a table inside a machine that looks a lot like an MRI machine. The PET machine detects the gamma rays and locates the origin of the radiation, thus locating a tumor in the body. This information is used in conjunction with a CT scan or X-ray so that doctors can identify the location of all of the patient’s tumors.
Side Effects
Though a PET scan has very few side effects, the radioactive isotope will stay in your body for 24-48 hours. For this reason, it is recommended that you avoid contact with anyone for a day so that you don’t expose anyone to the radiation.
Similar Tests
MRIs, CT scans, X-rays, and gallium scans can also be used to identify and locate tumors.
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For more information on Hodgkin's Disease, please see the following pages:
- Adult Hodgkin's Lymphoma: Diagnosis
- Adult Hodgkin's Lymphoma: Treatment
- Adult Hodgkin's Lymphoma: Introduction
- Childhood Hodgkin's Lymphoma: Diagnosis
- Childhood Hodgkin's Lymphoma: Treatment
- Childhood Hodgkin's Lymphoma: Introduction
For more information on Non-Hodgkin Lymphoma, please see the following pages:
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For nearly 30 years, Cancer Treatment Centers of America has been dedicated to finding the right combination of personalized cancer treatments for their patients. Call (877) 399-6937 or click here to learn more about treatment options.
Support Groups
For individuals, friends and families who are looking to connect during life's challenging times. Share personal experiences, evaluate information and get support during times of need, illness, treatment or recovery.
Find a Treatment Facility Near You
Click on a state below to find Lymphoma treatment options that could be right for you.
Select a State Below
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
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- Maryland
- Massachusetts
- Michigan
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