Imaging devices in
Nuclear Medicine Exam 1
Questions and Answers
emission
Ans- looking at radiation come out of the patient.
transmission
Ans- use a radioactive source placed behind the target to project radiation
through the target.
emission
Ans- nuclear medicine is what kind of imaging?
x-ray: transmission
,CT: transmission
nuclear medicine: emission
Ans- identify the scans modality types (emission or transmission):
x-ray
CT
nuclear medicine
it is used to measure the spatial distribution of a radiopharmaceutical. a spatial
and temporal distribution over time.
Ans- What is the purpose of a scintillation camera?
1st component: collimator.
2nd component: scintillation crystal.
3rd: component: photomultiplier tube.
4th component: positioning logic network.
5th component: pulse height analyzer.
Ans- Identify the five components in order of the scintillation camera.
,the collimator is the interface between the patient and the crystal: its job is to
filter out photons based on their direction of travel which maintains the quality
of the image.
Ans- explain the purpose of the collimator on a scintillation camera.
septa are the material in the holes of the collimator that allow the photons to
go through to produce the image.
Ans- what are collimator septa?
They come in different energy sizes - low, medium, and high energy.
Parallel hole: holes are facing directly at what we are trying to image. Used
most often. Does not magnify the image.
Diverging: comes out from the center of the collimator. Pyramid.
Converging: holes all face toward the center. Upside down pyramid. Converging
magnifies the image.
Pinhole: giant cone. Hourglass shape. Best way to magnify the image. Also always
inverts the image.
, Ans- contrast differences between the types of collimators used in nuc med.
energy sizes:
parallel hole:
diverging hole:
converging hole:
pinhole:
always invert the image and are the best to magnify an image.
Ans- pinhole collimators always do what?
they are the best way to do what?
toward the center. (upside down pyramid)
Ans- converging collimators holes all face:
center of the collimator and go out. (pyramid)
Ans- diverging collimators come from the:
Nuclear Medicine Exam 1
Questions and Answers
emission
Ans- looking at radiation come out of the patient.
transmission
Ans- use a radioactive source placed behind the target to project radiation
through the target.
emission
Ans- nuclear medicine is what kind of imaging?
x-ray: transmission
,CT: transmission
nuclear medicine: emission
Ans- identify the scans modality types (emission or transmission):
x-ray
CT
nuclear medicine
it is used to measure the spatial distribution of a radiopharmaceutical. a spatial
and temporal distribution over time.
Ans- What is the purpose of a scintillation camera?
1st component: collimator.
2nd component: scintillation crystal.
3rd: component: photomultiplier tube.
4th component: positioning logic network.
5th component: pulse height analyzer.
Ans- Identify the five components in order of the scintillation camera.
,the collimator is the interface between the patient and the crystal: its job is to
filter out photons based on their direction of travel which maintains the quality
of the image.
Ans- explain the purpose of the collimator on a scintillation camera.
septa are the material in the holes of the collimator that allow the photons to
go through to produce the image.
Ans- what are collimator septa?
They come in different energy sizes - low, medium, and high energy.
Parallel hole: holes are facing directly at what we are trying to image. Used
most often. Does not magnify the image.
Diverging: comes out from the center of the collimator. Pyramid.
Converging: holes all face toward the center. Upside down pyramid. Converging
magnifies the image.
Pinhole: giant cone. Hourglass shape. Best way to magnify the image. Also always
inverts the image.
, Ans- contrast differences between the types of collimators used in nuc med.
energy sizes:
parallel hole:
diverging hole:
converging hole:
pinhole:
always invert the image and are the best to magnify an image.
Ans- pinhole collimators always do what?
they are the best way to do what?
toward the center. (upside down pyramid)
Ans- converging collimators holes all face:
center of the collimator and go out. (pyramid)
Ans- diverging collimators come from the:
