Positron Emission of Carbon-11

11C → 11B + e+ + νe

概述

Carbon-11 undergoes positron emission to become boron-11 with a short half-life of 20.4 minutes. C-11 can be incorporated into virtually any organic molecule for PET imaging because carbon is present in all organic compounds. Its short half-life limits use to facilities with on-site cyclotrons.

参与者

角色 物质 系数 状态
反应物 Carbon C 1 (s)
产物 Boron B 1 (s)

日常示例

C-11 labeled methionine PET scans help distinguish brain tumor recurrence from radiation necrosis after cancer treatment.

工业重要性

C-11 PET示踪剂用于神经学研究和脑代谢成像，对阿尔茨海默症和神经退行性疾病的诊断研究具有重要价值。

属性

类型
Nuclear
可逆
否
能量
放热
ΔH
-96000000.0 kJ/mol

相关反应

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 Carbon-11?
The balanced equation is: ¹¹C → ¹¹B + e⁺ + νₑ.
What type of reaction is Positron Emission of Carbon-11?
Positron Emission of Carbon-11 is a nuclear reaction.
Is Positron Emission of Carbon-11 exothermic or endothermic?
Positron Emission of Carbon-11 is exothermic (releases energy). The enthalpy change (ΔH) is -96000000.0 kJ/mol.