Q. Which of the following materials are used as the insulation between the inner and outer electrodes of the ion chamber?

View solution

Q. Liquid samples must be counted using ionization chamber by placing them in which of the following?

View solution

Q. Gaseous compounds containing radioactive sources can be directly introduced into the ionization chamber.

View solution

Q. Liquid Scintillators are used for which of the following materials?

View solution

Q. The first gamma camera is also known by which of the following names?

View solution

Q. Which of the following is not a component of gamma camera?

View solution

Q. Which of the following is the first object that an emitted gamma photon encounters after exciting the body?

View solution

Q. Which of the following is a pattern of holes through gamma ray absorbing material, usually lead or tungsten?

View solution

Q. 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?

View solution

Q. Which of the following components adds all the signals and determines where each scintillation event occurred in the detector?

View solution

Q. Gamma camera uses one scintillation detector.

View solution

Q. Gamma camera uses which of these components to produce a position intensity picture of a radioactive area?

View solution

Q. Which of the following is known as a scintillation counter?

View solution

Q. Straight bore collimator is used for thyroid work in the medical field.

View solution

Q. In liquid scintillation counter, which of the following is a fluorescent substance?

View solution

Q. When UV light is absorbed by the fluor molecules the light emitted is in which of the following colours?

View solution

Q. In liquid scintillation counter, which of the following is used to convert light into electrical signals?

View solution

Q. The reduction in counting efficiency of the scintillation detector is called as __________

View solution

Q. Which of the following is not a type of quenching?

View solution

Q. In which type of quenching, the radiation emitted by the isotope is not detected due to absorption of the radiation by the sample itself?

View solution