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ISOMERIC TRANSITION (IT)Nucleus in excited Isomeric/Metastable (m) Energy StateZD = ZP ( - E)1) Gamma Radiation (γ ) (may occur in steps)99mTc => 99m Tc + γ (γ = penetrating radiation)43 432) Internal Conversion ( transfer energy to a K e - )Conversion Electron (10% in 99m Tc)Conversion Coefficient α = Ne/NγCharacteristic x-ray of daughter nuclide orAuger Process with Auger e emission andCharacteristic x-ray from the Auger e position)

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