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Questions and Answers
What type(s) of radiation are being measured when a Geiger counter is used to measure a radioactive source with its cover removed?
What type(s) of radiation are being measured when a Geiger counter is used to measure a radioactive source with its cover removed?
- Gamma rays only
- Beta/alpha particles and gamma rays (correct)
- Alpha particles only
- Beta particles only
What is the region of operation on the voltage-response curve for a Geiger counter?
What is the region of operation on the voltage-response curve for a Geiger counter?
- Proportional region
- Geiger muller region (correct)
- Dose calibrator region
- Ionization region
Does the pulse mode operation of a gas-filled detector require a high photon flux to produce an accurate reading?
Does the pulse mode operation of a gas-filled detector require a high photon flux to produce an accurate reading?
- False (correct)
- Depends on the type of gas-filled detector
- True
- Not mentioned in the text
Will a Geiger counter with a short time constant respond quickly to a change in the local radiation field strength?
Will a Geiger counter with a short time constant respond quickly to a change in the local radiation field strength?
What is the purpose of a pulse height analyzer in a scintillation detector?
What is the purpose of a pulse height analyzer in a scintillation detector?
Which semiconductor material is commonly used in commercial intraoperative probes?
Which semiconductor material is commonly used in commercial intraoperative probes?
What is the function of a collimator in nuclear medicine imaging?
What is the function of a collimator in nuclear medicine imaging?
What is the main cause of non-uniformity in a gamma camera?
What is the main cause of non-uniformity in a gamma camera?
What is the stopping condition for a gamma camera image?
What is the stopping condition for a gamma camera image?
What does dead time refer to in radiation detection?
What does dead time refer to in radiation detection?
What is involved in calibrating a scintillation detector?
What is involved in calibrating a scintillation detector?
What is dead time in radiation detection?
What is dead time in radiation detection?
What causes baseline shift and pulse pile-up in radiation detection?
What causes baseline shift and pulse pile-up in radiation detection?
What is the primary function of a light pipe in nuclear medicine imaging?
What is the primary function of a light pipe in nuclear medicine imaging?
What is the primary function of a pulse height analyzer in a scintillation detector?
What is the primary function of a pulse height analyzer in a scintillation detector?
What causes baseline shift and pulse pile-up in radiation detection?
What causes baseline shift and pulse pile-up in radiation detection?
Which type of collimator design option will improve the collimator’s overall sensitivity?
Which type of collimator design option will improve the collimator’s overall sensitivity?
What is the appropriate collimator if we want high-quality images of the bones of the hand?
What is the appropriate collimator if we want high-quality images of the bones of the hand?
What is dead time in radiation detection?
What is dead time in radiation detection?
Which of the following can be used as the stopping condition for a gamma camera image?
Which of the following can be used as the stopping condition for a gamma camera image?
What is the function of a light pipe in nuclear medicine imaging?
What is the function of a light pipe in nuclear medicine imaging?
Which of the following semiconductor materials is used in commercial intraoperative probes?
Which of the following semiconductor materials is used in commercial intraoperative probes?
What is involved in calibrating a scintillation detector?
What is involved in calibrating a scintillation detector?
What is the percent energy resolution for a Cs137 source with an energy range at half-maximum from 625 keV to 692 keV?
What is the percent energy resolution for a Cs137 source with an energy range at half-maximum from 625 keV to 692 keV?
What is the appropriate collimator if part of the body being imaged is larger than the collimator’s field of view?
What is the appropriate collimator if part of the body being imaged is larger than the collimator’s field of view?
What causes non-uniformity in a gamma camera?
What causes non-uniformity in a gamma camera?
What type(s) of radiation are being measured when a Geiger counter is used to measure a radioactive source with its cover removed?
What type(s) of radiation are being measured when a Geiger counter is used to measure a radioactive source with its cover removed?
According to the standard of practice, the percent energy resolution for Cs137 should fall between:
According to the standard of practice, the percent energy resolution for Cs137 should fall between:
What is the region of operation on the voltage-response curve for an ionization survey meter?
What is the region of operation on the voltage-response curve for an ionization survey meter?
Does pulse mode operation of a gas-filled detector require a high photon flux to produce an accurate reading?
Does pulse mode operation of a gas-filled detector require a high photon flux to produce an accurate reading?
What does the change in charge on one or both plates of a gas-filled detector correlate to?
What does the change in charge on one or both plates of a gas-filled detector correlate to?
Identify the region of operation on the voltage-response curve for a Geiger counter.
Identify the region of operation on the voltage-response curve for a Geiger counter.
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