...

2. What is PET-scan?

3. PET/CT
PET

4. 18-Flourodeoxyglucose

8. Давуу тал Сул тал
18F-FDG –ХЗХ 110 мин,бага
позитрон энерги ялгаруулдаг,өндөр
чанартай дүрслэл гаргаж чаддаг
Өндөр өртөгтэй(4-16 slice ,250-600,0
dollar)
Ихэнхдээ ямар ч өвдөлт илэрдэггүй Ховор тохиолдолд гаж нөлөө
илэрдэг
Ер бусын шинжилгээ,онош баттай
тавигддаг
Зүүний хатгалт,аманд үл ялиг
амтагдах
.....

9.  You may be asked not to eat anything for 4 - 6 hours before the scan.You
will be able to drink water.
Tell your health care provider if:
 You are afraid of close spaces (have claustrophobia).You may be given a
medicine to help you feel sleepy and less anxious.
 You are pregnant or think you might be pregnant.
 You have any allergies to injected dye (contrast).
 You have take insulin for diabetes.You will need special preparation.
Always tell your health care provider about the medicines you are taking,
including those bought without a prescription. Sometimes, medicines
interfere with the test results.
Considerations

10. A PET scan can show the size, shape, and function of the brain, so your
doctor can make sure it is working as well as it should. It is most often used
when other tests, such as MRI scan or CT scan, do not provide enough
information.
This test can be used to:
• Diagnose cancer
• Prepare for epilepsy surgery
• Dementia /such as Alzheimer's disease/
• Tell the difference between Parkinson's disease and other movement
disorders

13. Alzheimer's disease

16. Brain tumor

18. Parkinson's disease

19. PET scans highlight the loss of
dopamine storage capacity in
Parkinson’s disease. In the scan of a
disease-free brain, made with [18F]-
FDOPA PET (left image), the red and
yellow areas show the dopamine
concentration in a normal putamen, a
part of the mid-brain. Compared with
that scan, a similar scan of a
Parkinson’s patient (right
image) shows a marked dopamine
deficiency in the putamen.

20. Huntington chorea
PET scan of a healthy person’s brain (left image), compared with a PET scan of a
patient with Huntington’s disease, 3.6 years into the progression of the
disease (right image), shows the loss of dopamine D2 receptors in the mid-brain.
The scans were made with [11-C]-RAC PET

21. PET brain scans show
chemical differences in
the brain between
addicts and non-
addicts.The normal
images in the bottom
row come from non-
addicts; the abnormal
images in the top row
come from patients
with addiction
disorders.These PET
brain scans show that
that addicts have
fewer than average
dopamine receptors in
their brains, so that
weaker dopamine
signals are sent
between cells.