Positron Emission of Fluorine-18 (PET Scan)

18F → 18O + e+ + νe

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Fluorine F 1 (s)
생성물 Oxygen O 1 (g)

일상 속 예시

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

산업적 중요성

F-18 FDG PET은 암 병기 결정, 치료 모니터링, 신경학적 영상의 최적 표준입니다. 미국에서 연간 200만 건 이상의 PET 스캔이 시행됩니다.

성질

유형
Nuclear
가역 반응
아니오
에너지
발열
ΔH
-64000000.0 kJ/mol

관련 반응

Alpha Decay of Radium-226 Alpha Decay of Radon-222 Alpha Decay of Thorium-232 Neutron Capture by Uranium-238 Beta Decay of Iodine-131 Beta Decay of Strontium-90 Alpha Decay of Polonium-210 Americium-241 Alpha Decay Beta Decay of Cobalt-60 Electron Capture by Beryllium-7

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.