It shows that the technique of annihilation of slow positron is a good method in monitoring the defect in sio2 同时也说明慢正电子湮没技术在研究sic上的sio _ 2中缺陷的变化是可行的实验方法。
Positron emission tomography ( pet ) is a non - invasive method to detect the distribution of radionuclide in vivo 正电子发射体层摄影术是一种无创性的探测生理性放射性核素在机体内分布的断层显像技术。
Positron imaging as a biomedical research technique and clinical diagnostic procedure has been widely used 正电子成像( positronimaging )作为一种生物医学研究技术和临床诊断手段已经得到了广泛的应用。
Radionuclide imaging devices - characteristics and test conditions - part 1 : positron emission tomographs iec 61675 - 1 : 1998 ; german version en 61675 - 1 : 1998 放射性核素影像装置.性能和试验条件.第1部分:定位放
Positron emission tomography is a kind of the highest level medical imaging equipments among the nuclear medical domain 正电子发射断层成像( positronemissiontomography )是核医学领域内最高水平的功能成像技术。
The basic electronics of positron imaging systems are composed of the preamplifier , shaper , main amplifier , constant fraction discriminator ( cfd ) and so on 有用的数据采入计算机后,对其进行相关的处理后进行图像重建。
A series of staging investigations were undertaken , including positron emission tomography ( pet ) scan , which revealed high risk of metastasis to the cervical lymph nodes 一系列的检查(包括正子造影)发现有高机率颈部淋巴结转移。
The hamamatsu r5924 photomultiplier tube of mesh type will be used for the time - of - flight counter of the beijing electron - positron spectrometer ( bes ) 摘要北京谱仪中的飞行时间探测器将采用滨松公司生产的细网型光电倍增管r5924 。
Positrons and neutrinos are produced during the process , and are the telltale trace of the nuclear fusion reaction inside the sun V ,那就可以和另外一粒质子结合,释放能量。这过程产生正电子及中微子,它们是太阳内部核融合反应的印记。