Positron Emission of Fluorine-18 (PET Scan)

18F → 18O + e+ + νe

ภาพรวม

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.

ผู้เข้าร่วม

บทบาท สาร สัมประสิทธิ์ สถานะ
สารตั้งต้น Fluorine F 1 (s)
ผลิตภัณฑ์ Oxygen O 1 (g)

ตัวอย่างในชีวิตประจำวัน

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

ความสำคัญทางอุตสาหกรรม

F-18 FDG PET is the gold standard for cancer staging, treatment monitoring, and neurological imaging. Over 2 million PET scans are performed annually in the US.

คุณสมบัติ

ประเภท
Nuclear
ย้อนกลับได้
ไม่
พลังงาน
คายความร้อน
ΔH
-64000000.0 kJ/mol

ปฏิกิริยาที่เกี่ยวข้อง

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.