Positron Emission of Fluorine-18 (PET Scan)

18F → 18O + e+ + νe

Descripción general

Fluorine-18 undergoes positron emission to become oxygen-18 with a half-life of 109.8 minutes. The emitted positron annihilates with an electron, producing two 511 keV gamma rays in opposite directions. This annihilation radiation is detected in PET (positron emission tomography) scanners.

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Fluorine F 1 (s)
Producto Oxygen O 1 (g)

Ejemplo cotidiano

PET scans using F-18 labeled glucose (FDG) detect cancer by showing areas of high metabolic activity that consume more glucose than normal tissue.

Importancia industrial

El ¹⁸F-FDG es el radiotrazador PET más utilizado en oncología, neurología y cardiología diagnóstica.

Propiedades

Tipo
Nuclear
Reversible
No
Energía
Exotérmico
ΔH
-64000000,0 kJ/mol

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Frequently Asked Questions

What is the equation for Positron Emission of Fluorine-18 (PET Scan)?
The balanced equation is: ¹⁸F → ¹⁸O + e⁺ + νₑ.
What type of reaction is Positron Emission of Fluorine-18 (PET Scan)?
Positron Emission of Fluorine-18 (PET Scan) is a nuclear reaction.
Is Positron Emission of Fluorine-18 (PET Scan) exothermic or endothermic?
Positron Emission of Fluorine-18 (PET Scan) is exothermic (releases energy). The enthalpy change (ΔH) is -64000000.0 kJ/mol.