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Amyloid PET-CT: Alzheimer Disease Diagnosis

PET tracers imaging brain amyloid plaques in vivo support Alzheimer diagnosis

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Radyoloji department. Book Appointment →

What is Amyloid PET-CT: Alzheimer Disease Diagnosis?

Amyloid PET-CT is a molecular imaging method that provides in vivo imaging of beta-amyloid plaques in the brain. Amyloid deposition, one of the pathologic hallmarks of Alzheimer's disease, is detected by this method.

Three FDA-approved amyloid PET tracers exist: 18F-florbetaben (Neuraceq), 18F-florbetapir (Amyvid), 18F-flutemetamol (Vizamyl). These tracers cross the blood-brain barrier and bind to beta-amyloid plaques.

Indications include atypical cognitive impairment, early-onset dementia, suspected progression, and differential diagnosis (Alzheimer vs. frontotemporal dementia vs. primary progressive aphasia). Positive result supports Alzheimer, negative result largely excludes it.

Symptoms

Early-onset cognitive impairment
Atypical dementia presentation
Rapid progression
Indeterminate MRI findings
Family history and genetic risk
Differential diagnosis need
Mild cognitive impairment (MCI)
Clinical research enrollment

Risk Factors

Advanced age
Family history
APOE ε4 allele
Down syndrome
Cardiovascular risk factors
Traumatic brain injury
Low education level
Sedentary lifestyle

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Atypical dementia clinical picture
  • Early-onset cognitive impairment
  • Differential diagnosis need
  • MCI and progression risk
  • Clinical research protocol
  • Genetic risk research

Treatment Methods

01
IV administration of amyloid PET tracer
02
30-90 min waiting period
03
PET-CT or PET-MR acquisition
04
Cortical amyloid burden evaluation
05
Visual + quantitative score
06
Positive/negative reporting
07
Neurology clinical correlation
08
Informed consent
09
Genetic counseling

Which Department to Visit?

You can visit our Radyoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.