Gas filled detectors are highly efficient for the detection of high energy gamma photons and X-rays as well as low energy beta particles. Select one: True False

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Gas filled detectors are highly efficient for
the detection of high energy gamma
photons and X-rays as well as low energy
beta particles.
Select one:
O True
False
Transcribed Image Text:Gas filled detectors are highly efficient for the detection of high energy gamma photons and X-rays as well as low energy beta particles. Select one: O True False
Which of the following factors tend to not reduce resolution in PET imaging?
O A. Septa in 3-D imaging decrease the number of detected true coincidence events
O B. All answers are true
O C. 511keV photon emissions are not always exactly 180° apart following an annihilation reaction.
O D. The positrons can travel a significant distance prior to annihilation.
O E No answer is true
F. Proximity of the source to the edge of the ring of detectors.
Transcribed Image Text:Which of the following factors tend to not reduce resolution in PET imaging? O A. Septa in 3-D imaging decrease the number of detected true coincidence events O B. All answers are true O C. 511keV photon emissions are not always exactly 180° apart following an annihilation reaction. O D. The positrons can travel a significant distance prior to annihilation. O E No answer is true F. Proximity of the source to the edge of the ring of detectors.
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