Positron Emission of Fluorine-18 (PET Scan)

¹⁸F → ¹⁸O + e⁺ + ν_e

Visão geral

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

Papel	Substância	Coeficiente	Estado
Reagente	Fluorine F	1	(s)
Produto	Oxygen O	1	(g)

Exemplo do 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.

Importância industrial

A PET com F-18 FDG é o padrão de referência para estadiamento de cancro, monitorização terapêutica e imagiologia neurológica. Mais de 2 milhões de exames PET são realizados anualmente nos EUA.

Propriedades

Tipo: Nuclear
Reversível: Não
Energia: 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.