Nuklida · radioaktif
Fluorin-18 (¹⁸F)
Fluorin-18 (¹⁸F) adalah isotop radioaktif fluorin dengan 9 proton dan 9 neutron (nomor massa 18). Waktu paruhnya 109,734 menit (± 0,008 menit), meluruh terutama lewat peluruhan beta plus (β⁺).
Data nuklida
- Unsur
- Fluorin (F, Z = 9)
- Nomor massa (A)
- 18
- Proton (Z)
- 9
- Neutron (N)
- 9
- Massa atom
- 18.000937324 ± 0.000000497 u
- Waktu paruh
- 109,734 menit (± 0,008 menit)
- Mode peluruhan
- Peluruhan beta plus (β⁺) ( 100 %)
- Inti anak
- Oksigen-18 (¹⁸O)
- Tahun penemuan
- 1937
- Sumber data
- IAEA Atomic Mass Data Center (NUBASE) and IUPAC CIAAW, via PubChem
Kegunaan isotop fluorin
- 18F is a radioactive fluorine isotope that is used in an 18F-FDG compound (18F-labeled, fluoro-deoxy glucose) for imaging the organs, bones, tissues, and brain of the body with a technique called positron emission topography (PET). The 18F-FDG compound is injected and the isotopically labeled glucose is consumed by any cell requiring glucose as a source of energy,. – 18F emits positrons that collect in tissue and interact with regular negative electrons when injected into the body. The positrons and electrons annihilate each other, producing two gamma rays that are emitted in opposite directions. The radiation is detected on a PET camera, which generates a picture of the body part being examined (Fig. IUPAC.9.1). –Because 18F has a short half-life of about 110 min, there is little chance of radiation damage to the patient.
Isotop fluorin lainnya
¹³F, ¹⁴F, ¹⁵F, ¹⁶F, ¹⁷F, ¹⁹F, ²⁰F, ²¹F, ²²F, ²³F, ²⁴F, ²⁵F, ²⁶F, ²⁷F, ²⁸F, ²⁹F, ³⁰F, ³¹F