Emisión de positrones del flúor-18 (PET)

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 Flúor F 1 (s)
Producto Oxígeno 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.

Preguntas frecuentes

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