正电子

Imaging of SERT with positron emission tomography and single photon emission computed tomography in humans can provide an important tool for understanding the relationship of psychiatric disorders and the alterations in SERT density, as well as to monitor the treatment of mental patients.

SERT的正电子发射断层和单光子发射断层活体显像剂有助于研究该系统的变化与精神紊乱疾病的关系，以及精神紊乱病人疗效的监测。

Department of Neurology,General Hospital of Tianjin Medical University,Tianjin 300052,China）Abstract:Objective To explore the clinical features and value of MRI and 8FFDG PET in diagnosis of progressive supranuclear palsy.

目的 探讨进行性核上性麻痹（progressive supranuclear palsy，PSP）的临床特点及头颅MRI、正电子发射体层扫描检查在本病中的诊断价值。

So that it can be considered as that all materials can all be composed and transformed unitedly time after time by electrons and positrons.

因而，可以认为：一切物质都是统一由&电子&与&正电子&逐次组合、转变而成。

The key of this technology depended on increasing batteries positron electrode -- zincous -- the electron that can carry.

这项技术的重点在于增加了电池正电子电极——阳极——所能携带的电子。

And since their charges are opposite, the interaction deflects the two sorts of particles in different directions.

同时因为它们带的电是相反的（正电子正电，负电子负电），所以地球磁场将使这两种粒子向两个不同的方向发生偏转。

But because these particles are electrically charged, they also interact with the Earth's magnetic field. And since their charges are opposite, the interaction deflects the two sorts of particles in different directions.

但因为这些粒子是带电荷的，会和地球的磁场相作用，又因为电子和正电子的电极相反，所以在地球磁场的作用下他们会向两个不同的方向偏转。

It can not only show clearly and accurately the changes of tissues, autopsy and pathology of the brain, but also show the information of the activity of the brain in time without harm. It can be widely used in forensic medicine such as injury gradated evaluation,disability evaluation and cognition in forensic assessment in psychiatry, providing a new method from pure morphological study to morphology-function combination study.

它以脑功能活动时引起的血氧浓度改变为基础，采用不同颜色直接实时地将脑功能变化反映在MR图像上，突破了既往研究脑功能的黑箱技术，以往的影像学检查技术绝大部分是依赖于被检组织形态学的改变，而功能性成像这一领域一直为正电子发射体层摄影(positronemissiontomography，PET)所独有。

Combination PET and CT scans, which spot tissues that have slurped up the radioactive glucose, revealed caches of brown fat in the neck, chest, and abdomen in all but one of the men, indicating that the fat fired up during exposure to cold.

正电子发射断层和计算机断层联合扫描发现了吞噬放射性葡萄糖的组织，显示出棕色脂肪的隐藏处——除了一个人之外，在其他人的脖子、胸部和腹部都发现了棕色脂肪，这表明棕色脂肪遇冷之时就开始活跃。

Combination PET and CT scans, which spot tissues that have slurped up the radioactive glucose, revealed caches of brown fat in the neck, chest, and abdomen in all but one of the men, indicating that the fat fired up during exposure to cold.

正电子发射断层和计算机断层联合扫描显示出棕色脂肪的隐藏处，除了一个人之外，在其他人的脖子、胸部和腹部都发现了棕色脂肪，这些脂肪组织吞噬了葡萄糖。该研究表明棕色脂肪遇冷之时就开始活跃。

An atom of antihydrogen, for instance, is composed of a negatively-charged antiproton being orbited by a positively-charged positron.

举例来说，一个反氢原子，由带正电荷的正电子围绕带负电荷轨道运行的反质子组成。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。