627.Radionuclide produced by generator
is /are
a.technetium-99m
b.Krypton-81m
c.indium-113m
d.rubidium-82
e.iodine-123
ANS OF PREVIOUS BLOG
592.True regarding iodine -123
a.half life –13hrs
b.decays wholly by positive beta
c.emits 160 keV Gamma rays
d.emit 28 keV X-rays
e. emit positive beta particle
592.acd---- Iodine -123 decays wholly by electron capture and
emit no positive beta particle. (Chapter
8, page no.123,second edition (2008),Farr’s Physics for Medical Imaging).
What is electron capture?
Electron capture is one of the radioactive transformation of radionuclides with a neutron deficit .Here the nucleus increase its number of neutrons relative to the number of protons by capturing a extranuclear electron from the nearest ( K) shell.In this process gamma rays and X- rays are emmitted.
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