Positron Emission Tomography

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Contents 1 More Specific Terms 2 Indications 3 Procedure 4 More General Terms 5 References

More Specific Terms

• adenosine positron emission tomography (adenosine PET)

Indications

• brain disease

• Alzheimer's disease

• sensitivity > specificity
• bilateral parietal hypometabolism

• frontotemporal dementia
• Huntington's disease ( pathognomonic)
• seizures

• heart disease
• malignant neoplasm

• brain neoplasm
• breast cancer
• cervical cancer
• colorectal adenocarcinoma
• esophageal cancer
• lung cancer
• lymphoma
• melanoma
• pancreatic cancer
• thyroid cancer [2]

Procedure

• 12.5 mCi of 2-fluoro*-2-deoxy- glucose is injected intravenously
  
• * F[18]
  
• 40 minute uptake period with patient resting quietly in a dark room.
  
• Multiple transaxial images are obtained. A rotating projectional image, sagittal, coronal & transvers tomographic images are generated.
  
• Generally PET scan set to focus on gray matter; white matter appears to have little metabolism
  
• The West Los Angeles VA has a Siemens ECAT-953 tomographic scanner. [2]

More General Terms

• radiography (diagnostic imaging, roentgenography)

References

1. nlmpubs.nlm.nih.gov/hstat/ahcpr/
2. Mayo Clinic Positron emission tomography (PET) scan [1]
3. National Guideline Clearinghouse
   - PET imaging in cervical cancer: recommendations. Program in Evidence-based Care ngc-guideline: [2]
   - PET imaging in esophageal cancer: recommendations. Program in Evidence-based Care ngc-guideline: [3]
   - PET imaging in pancreatic cancer: recommendations. Program in Evidence-based Care ngc-guideline: [4]
   - PET imaging in brain cancer: recommendations. Program in Evidence-based Care ngc-guideline: [5]
   - PET imaging in ovarian cancer: recommendations. Program in Evidence-based Care ngc-guideline: [6]
   - PET imaging in small cell lung cancer: recommendations. Program in Evidence-based Care ngc-guideline: [7]
   - PET imaging in testicular cancer: recommendations Program in Evidence-based Care ngc-guideline: [8]

positron emission tomography (PET, PET scan)