Chemistry & Chemical Reactivity
Solutions
Chemistry & Chemical Reactivity
Oxygen-15 is used in the medical procedure called positron emission tomography. This isotope is prepared on a cyclotron from irradiation of nitrogen-14 with deuterium nuclei. It decays to nitrogen-15 by positron emission, and the positrons are annihilated when they collide with electrons, forming two gamma rays. Write equations for the three reactions described here.
Interpretation:
Equations for the formation of oxygen-15 used in the medical procedure called positron emission tomography have to be written.
Concept introduction:
Pet or positron emission tomography is a non-invasive medical imaging technology that shows the biology of disorders at the molecular level before anatomical changes are visible.
Step-1: The radioactive isotope of nitrogen-14 is converted into oxygen-15 by the irradiation with deuterium nuclei. The equation is as follows,
Step-2: Oxygen-15, so formed in the step-1 decays to nitrogen-15 by the emission of positron. The equation is as follows,
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