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MCQs

Total Questions : 57 | Page 6 of 6 pages
Question 51. Gaseous compounds containing radioactive sources can be directly introduced into the ionization chamber.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 52. Which of the following materials are used as the insulation between the inner and outer electrodes of the ion chamber?
  1.    Polythene
  2.    Plastic
  3.    Polytetrafluoroethylene
  4.    Polyacrylamide
 Discuss Question
Answer: Option C. -> Polytetrafluoroethylene
Answer: (c).Polytetrafluoroethylene
Question 53. The first gamma camera is also known by which of the following names?
  1.    Hal camera
  2.    Anger camera
  3.    Muller camera
  4.    West camera
 Discuss Question
Answer: Option B. -> Anger camera
Answer: (b).Anger camera
Question 54. Which of the following is a pattern of holes through gamma ray absorbing material, usually lead or tungsten?
  1.    Collimator
  2.    Detector crystal
  3.    Photo multiplier tubes
  4.    Position circuitry
 Discuss Question
Answer: Option A. -> Collimator
Answer: (a).Collimator
Question 55. Which of the following is the first object that an emitted gamma photon encounters after exciting the body?
  1.    Collimator
  2.    Detector crystal
  3.    Photo multiplier tubes
  4.    Position logic circuit
 Discuss Question
Answer: Option C. -> Photo multiplier tubes
Answer: (c).Photo multiplier tubes
Question 56. When the energy of an absorbed gamma photon is released, a flash of light is produced. This is similar to which of the following effects?
  1.    Photoelectric effect
  2.    Compton effect
  3.    Pair production
  4.    Collision effect
 Discuss Question
Answer: Option A. -> Photoelectric effect
Answer: (a).Photoelectric effect
Question 57. Which of the following is not a component of gamma camera?
  1.    Collimator
  2.    Detector crystal
  3.    Pre-amplifier
  4.    Position logic circuit
 Discuss Question
Answer: Option C. -> Pre-amplifier
Answer: (c).Pre-amplifier

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