Radionuclides And Radiopharmaceuticals Nmtcb Already Passed

Which of the following factors affects the transient equilibration time between parent and daughter nuclei? (a) Number of milking (b) Radionuclidic impurities of parent (c) Half-lives of parent and daughter (d) The difference in the half-lives between parent and daughter {Ans: (c) Half-lives of parent and daughter}Other than wavelength, frequency, and energy intensity, the fundamental difference between X-rays and gamma (γ) rays is __________ {Ans: that X-rays are produced from energy released due to changes in the quantum levels/values of orbital electrons of an atom while gamma (γ) rays are produced from energy shifts in the nucleus}Characteristic x-ray {Ans: X-ray produced when incident electron interacts with inner shell orbital electron (When an outer electron fills in a low shell spot)}A 1-millicurie dose of a radiopharmaceutical is equal to how many becquerels? {Ans: 37 million (37 MBq).}An important cause of impurity in I-123 preparations is __________. {Ans: I-124}What biologically important ion does 201Tl most closely mimic? {Ans: Potassium (same charge and similar ionic radius).}