PET/CT exam Questions and Answers
Graded A+
Most common irradiation process for 18F cyclotron - Correct answer-18Oxygen
(p,n)= 18f
2. 18F t1/2= - Correct answer-110mins
Carbon-11 t1/2= - Correct answer-20mins
Rb82 t1/2= - Correct answer-75secs
Nitrogen 13 t1/2= - Correct answer-10 mins
Rb82 is generator produced - Correct answer-True
Ga68 is generator produced - Correct answer-True
Which Rphx are generator produced - Correct answer-rb82, cu82, ga68
Positrons are produced by proton poor nuclei - Correct answer-false / proton rich
or neutron poor
The most common 18F rphx is : - Correct answer-FDG
The most common Pet rphxs include:= - Correct answer-F18,Carbon, Rb, nitrogen,
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, Most target material used in pet production is - Correct answer-liquid or gases
Rphx fdg is used for = - Correct answer-oncology: cerebral and metabolism tagged
to 18f
must be used on site in cyclotron - Correct answer-11c,13n and 15O (such a short
half life)
what is a drawback for FBP =filtered back projection: - Correct answer-star artifact
Which algorithim is used more: - Correct answer-ORedered subset ecpectation
maximations =OSEM
Iterative reconstruction produces no artifacts and has better signal to noise ratio in
areas of low tracer uptake: - Correct answer-True
The best of the 3 stipulations for Pet rad protect: - Correct answer-Distance
What is HVL for positron emitters= - Correct answer-4.2mm(lead)
What are examples of PET scintillation crystals: - Correct answer-LSo, bgo, gso,
lyso
What makes a good scintillation material in pet crystals: - Correct answer-high
light yields=good energy resolution
High atomic #=efficient detection - Correct answer-TRUE
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Graded A+
Most common irradiation process for 18F cyclotron - Correct answer-18Oxygen
(p,n)= 18f
2. 18F t1/2= - Correct answer-110mins
Carbon-11 t1/2= - Correct answer-20mins
Rb82 t1/2= - Correct answer-75secs
Nitrogen 13 t1/2= - Correct answer-10 mins
Rb82 is generator produced - Correct answer-True
Ga68 is generator produced - Correct answer-True
Which Rphx are generator produced - Correct answer-rb82, cu82, ga68
Positrons are produced by proton poor nuclei - Correct answer-false / proton rich
or neutron poor
The most common 18F rphx is : - Correct answer-FDG
The most common Pet rphxs include:= - Correct answer-F18,Carbon, Rb, nitrogen,
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Most target material used in pet production is - Correct answer-liquid or gases
Rphx fdg is used for = - Correct answer-oncology: cerebral and metabolism tagged
to 18f
must be used on site in cyclotron - Correct answer-11c,13n and 15O (such a short
half life)
what is a drawback for FBP =filtered back projection: - Correct answer-star artifact
Which algorithim is used more: - Correct answer-ORedered subset ecpectation
maximations =OSEM
Iterative reconstruction produces no artifacts and has better signal to noise ratio in
areas of low tracer uptake: - Correct answer-True
The best of the 3 stipulations for Pet rad protect: - Correct answer-Distance
What is HVL for positron emitters= - Correct answer-4.2mm(lead)
What are examples of PET scintillation crystals: - Correct answer-LSo, bgo, gso,
lyso
What makes a good scintillation material in pet crystals: - Correct answer-high
light yields=good energy resolution
High atomic #=efficient detection - Correct answer-TRUE
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