positron decay

positron decay 基本解释

正电子衰变

医学

重点词汇

• positronn. 正电子 [化] 正子; 正电子
• decayn. 衰退, 腐败 v. (使)衰退, (使)腐败

positron decay 双语例句

1. 1、 Improvement on positron annihilation lifetime spectrometer with fast decay component in baf_2 luminescence
   利用BaF2晶体快速闪烁发光性质改进正电子湮没寿命谱仪
2. 2、 The various corrections in clinical Positron Emission Tomography ( PET) are described, including detectors normalization, decay correction, scatter and attenuation correction, calibration etc.
   介绍了正电子发射断层扫描（PET）中各种校正的意义及常见算法，这些校正包括归一化校正，衰交校正，散射与衰减校正，活度刻度等。
3. 3、 The corrections for the coincidence of γ-rays with X-rays ( from electron capture or internal conversition) and with annihilation quanta from positron decay are also discussed.
   考虑了γ射线与X射线以及与正电子湮没光子的级联修正问题。
4. 4、 Positron emission tomography ( PET) is a powerful medical imaging method for measuring the distribution of the positron emitter in the human body by co-incidence of the annihilation photons resulting from positron decay.
   正电子发射断层（PET）是一项强大的医学影像技术，它通过检测正电子-电子湮灭所产生的光子以确定正电子放射性物质的体内分布。