PET/CT Board Exam/PET/CT registry exam with
complete solu on 2025/2026 newest
Which of the following radionuclides is not a positron emi er? - CORRECT ANSWERS C-14
When a neutron deficient nucleus emits a positron? - CORRECT ANSWERS atomic mass
number is unchanged
Which of the following has the shortest half life? - CORRECT ANSWERS Rb-82
When F-18 FDG is transported across most cell membranes? - CORRECT ANSWERS it is trapped
in the cell and it is not further metabolized
Which of the following will not affect the distribu+on of F-18 FDG on a PET image? - CORRECT
ANSWERS Intense physical ac+vity the day before imaging, Serum insulin level, Serum glucose
level, and bladder catheteriza+on
Normal F-18 FDG distribu+on would show the least ac+vity in the? - CORRECT ANSWERS bone
All positron emi1ng isotopes are produced in a cyclotron? - CORRECT ANSWERS false
F-18 FDG PET is not an important tool for? - CORRECT ANSWERS detec+ng helicobacter pylori
Which of the following is true regarding F-18 FDG? - CORRECT ANSWERS it is taken up by a
disease free myocardium
,F-18 FDG PET images show a map of the ______ distribu+on in the body? - CORRECT ANSWERS
glucose
What length of +me should a lacta+ng female who undergoes F-18 FDG PET scanning wait
before resuming breast feeding? - CORRECT ANSWERS 24 hr
Because of the rela+vity high energy of the photons detected in PET imaging, a enua+on
correc+on does not need to be performed? - CORRECT ANSWERS false
What part of a PET scanner quality control regimen is necessary for the computa+on of
a enua+on factors? - CORRECT ANSWERS blank scan
Which of the following describes random coincidence? - CORRECT ANSWERS the simultaneous
detec+on of photons origina+ng from different positrons
Scin+lla+on crystals for PET scanners are not made of? - CORRECT ANSWERS lead sulfate
PET images may be reconstructed using? - CORRECT ANSWERS filtered back projec+on
Following an annihila+on reac+on, two 511 keV photons are emi ed in opposite direc+ons. If
one of the photons is deflected in the body? - CORRECT ANSWERS the deflec+on photon may
be detected outside the correct LOR
A pa+ent has undergone myocardial PET scans using 13 N ammonia and 18 FDG. There is li le
inferoapical ac+vity on the 13 N scan, but there is homogeneous uptake in the same area on the
18 FDG images. This suggests that? - CORRECT ANSWERS the inferoapical area may
revascularize
, Pa+ent A and Pa+ent B are injected with the same dose of 13 N ammonia for a myocardial PET
scan. The pa+ents are the same height but Pa+ent A weighs 120 lbs. and Pa+ent B weighs 180
lbs. From which pa+ent would more true coincidence be detected? - CORRECT ANSWERS
pa+ent A
Chewing gum between injec+on of 18 FDG and PET scanning will have no effect on the resul+ng
images? - CORRECT ANSWERS false
Why is it important to know if a pa+ent has an inflammatory condi+on before performing an 18
FDG-PET scan? - CORRECT ANSWERS Some inflammatory condi+ons cause areas of increased
uptake of 18 FDG
Pa+ent prepara+on for an F-18 FDG PET scan of the whole body includes? - CORRECT ANSWERS
fas+ng state of at least 4-6 h prior to the exam and avoiding intense physical ac+vity the day
before the exam
F-18 FDG is useful for imaging tumors because? - CORRECT ANSWERS it is a glucose analog,
there is an elevated rate of glycolysis in tumors, and it becomes trapped in tumor cells
Which dose and route of administra+on is the best choice when performing a whole body PET
scan with 18 FDG and a dedicated PET scanner? - CORRECT ANSWERS 10-20 mCi IV
Fill in the blank. High blood glucose levels may _____ F-18 FDG uptake in tumors? - CORRECT
ANSWERS decrease
Rela+ve to one another, Rb-82 and Sr-82 are? - CORRECT ANSWERS isobars
Which determines the lower limit of spa+al resolu+on in PET imaging? - CORRECT ANSWERS
positron range
complete solu on 2025/2026 newest
Which of the following radionuclides is not a positron emi er? - CORRECT ANSWERS C-14
When a neutron deficient nucleus emits a positron? - CORRECT ANSWERS atomic mass
number is unchanged
Which of the following has the shortest half life? - CORRECT ANSWERS Rb-82
When F-18 FDG is transported across most cell membranes? - CORRECT ANSWERS it is trapped
in the cell and it is not further metabolized
Which of the following will not affect the distribu+on of F-18 FDG on a PET image? - CORRECT
ANSWERS Intense physical ac+vity the day before imaging, Serum insulin level, Serum glucose
level, and bladder catheteriza+on
Normal F-18 FDG distribu+on would show the least ac+vity in the? - CORRECT ANSWERS bone
All positron emi1ng isotopes are produced in a cyclotron? - CORRECT ANSWERS false
F-18 FDG PET is not an important tool for? - CORRECT ANSWERS detec+ng helicobacter pylori
Which of the following is true regarding F-18 FDG? - CORRECT ANSWERS it is taken up by a
disease free myocardium
,F-18 FDG PET images show a map of the ______ distribu+on in the body? - CORRECT ANSWERS
glucose
What length of +me should a lacta+ng female who undergoes F-18 FDG PET scanning wait
before resuming breast feeding? - CORRECT ANSWERS 24 hr
Because of the rela+vity high energy of the photons detected in PET imaging, a enua+on
correc+on does not need to be performed? - CORRECT ANSWERS false
What part of a PET scanner quality control regimen is necessary for the computa+on of
a enua+on factors? - CORRECT ANSWERS blank scan
Which of the following describes random coincidence? - CORRECT ANSWERS the simultaneous
detec+on of photons origina+ng from different positrons
Scin+lla+on crystals for PET scanners are not made of? - CORRECT ANSWERS lead sulfate
PET images may be reconstructed using? - CORRECT ANSWERS filtered back projec+on
Following an annihila+on reac+on, two 511 keV photons are emi ed in opposite direc+ons. If
one of the photons is deflected in the body? - CORRECT ANSWERS the deflec+on photon may
be detected outside the correct LOR
A pa+ent has undergone myocardial PET scans using 13 N ammonia and 18 FDG. There is li le
inferoapical ac+vity on the 13 N scan, but there is homogeneous uptake in the same area on the
18 FDG images. This suggests that? - CORRECT ANSWERS the inferoapical area may
revascularize
, Pa+ent A and Pa+ent B are injected with the same dose of 13 N ammonia for a myocardial PET
scan. The pa+ents are the same height but Pa+ent A weighs 120 lbs. and Pa+ent B weighs 180
lbs. From which pa+ent would more true coincidence be detected? - CORRECT ANSWERS
pa+ent A
Chewing gum between injec+on of 18 FDG and PET scanning will have no effect on the resul+ng
images? - CORRECT ANSWERS false
Why is it important to know if a pa+ent has an inflammatory condi+on before performing an 18
FDG-PET scan? - CORRECT ANSWERS Some inflammatory condi+ons cause areas of increased
uptake of 18 FDG
Pa+ent prepara+on for an F-18 FDG PET scan of the whole body includes? - CORRECT ANSWERS
fas+ng state of at least 4-6 h prior to the exam and avoiding intense physical ac+vity the day
before the exam
F-18 FDG is useful for imaging tumors because? - CORRECT ANSWERS it is a glucose analog,
there is an elevated rate of glycolysis in tumors, and it becomes trapped in tumor cells
Which dose and route of administra+on is the best choice when performing a whole body PET
scan with 18 FDG and a dedicated PET scanner? - CORRECT ANSWERS 10-20 mCi IV
Fill in the blank. High blood glucose levels may _____ F-18 FDG uptake in tumors? - CORRECT
ANSWERS decrease
Rela+ve to one another, Rb-82 and Sr-82 are? - CORRECT ANSWERS isobars
Which determines the lower limit of spa+al resolu+on in PET imaging? - CORRECT ANSWERS
positron range
