positron

positron

1. Compared with FBP and Algebraic iterative reconstruction,COSEM is helpful to improve the image quality of SPECT, positron accord circuitry and PET greatly.

COSEM和滤波反投影(FBP)及代数迭代重建方法比较 ,能明显改进SPECT、正电子符合线路及PET图像的质量 ,特别是正电子符合线路和PET图像的质量。

2. Targetting in atelectatic lung by positron emission tomography in non-small cell lung cancer patients treated with three-dimensional conformal radiationtherapy[J].Chin J Radiat Onc,2006,15(1):11-14.

FDG PET对非小细胞肺癌合并肺不张三维适形放疗时靶区确定的临床意义[J].中华放射肿瘤学杂志,2006,15(1):11-14.

3. Multimodality MRI in determination of myocardial viability:comparison with positron emission tomography and single photon emission computed tomography[J].Chin J Radiol,2005,39(6):593-598.

MRI与正电子发射计算机体层、单光子发射计算机体层显像检测活性心肌的对比研究[J].中华放射学杂志.2005,39(6):593-598.

4. Positron annihilation study of Ni_(75)Cr_(15)Fe_(10) alloy

Ni_(75)Cr_(15)Fe_(10)合金的正电子湮灭研究

5. Positron emission tomography and computed tomograph

PET-CT

6. Positron emission tomography-computed tomography

PET／CT

7. Positron Annihilation in PZT Solid Solution Piezoelectric Ceramics

PZT多元系固溶体压电陶瓷正电子湮没研究

8. A study of YBa_2Cu_(3-x)Sn_xO_y by positron lifetime spectrum

YBa_2Cu_（3－x）Sn_xO_y超导体系的正电子寿命谱研究

9. Once an antiproton and positron have joined forces, the resulting antihydrogen atom is electrically neutral and thus no longer caged by the electrical fields in the trap.

一旦一个反质子和正电子具有了结合的力量,产生的反氢原子是中性的，结果在线圈中不再受电场束缚。

10. A New Type of Acute Nuclear ProbeSlow Positron Beam Line

一种新的灵敏核探针慢正电子束流装置

11. 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。

12. U is potentiometer and used for the open degress meter to indicate the open and close positron of the valve.

为电位器,供控制室内开度表指示阀门的开关位置。

13. The elementary principle of the medical cyclotron is analyzed.Medical cyclotron which is mainly used to produce the positron emitting medicament in PET/CT system is introduced.

主要应用拉摩定律及等时性回旋加速器的理论,对回旋加速器的基本原理进行分析,介绍了专门用于PET/CT大型诊断系统中为生产正电子药物的医用回旋加速器的基本特点与结构。

14. 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。

15. Pain and Regional Anesthesia Imaging Human Cerebral Pain Modulation by Dose-dependent Opioid Analgesia: A Positron Emission Tomography Activation Study Using Remifentanil.

人类通过剂量依赖性的阿片镇痛产生的大脑疼痛调制成像:一项瑞芬太尼的正电子扫描研究。

16. This paper describes the possible radiation sources and their characteristics around 3W1 beamline of Beijing Electron Positron Collider (BEPC).

介绍了北京正负电子对撞机同步辐射实验西厅3W1光束线周围辐射的来源和特点、辐射测量方法及测量结果。

17. In some kinds of beta decay, a nuclide loses surplus positive charge by emitting a positron (in the same event, a proton becomes a neutron, and neutrinos are also given off).

以某种贝它衰减，一个核素靠发出一个正电子失去剩余正电荷(在相同的事件中，一个质子变成一个中子，而且也发射微中子)。

18. The vacancy defects of samples were measured by slow positron annihilation.

借助慢正电子湮没技术研究了样品的空位型缺陷。

19. photon TOF assisted positron emission tomography

光子渡越时间辅助正电子发射断层成像(术)

20. Positron emission tomography,as the leading technology providing mo lecular imaging of biological process-es,is widely used on living laboratory a nimals.

分子医学研究需要在活体实验动物上观察分子水平的生物学过程,因而正电子发射体层(PET)显像作为目前最成熟的分子显像方法,正被越来越多地用于动物实验。

21. the weight of positron density distribution

分布权重

22. The effect of defect and microstructure on soft magnetic properties were studied for FeCuNbSiB alloy by means of positron annihilation technique associated with X ray diffraction.

利用正电子湮没技术结合 X-射线衍射分析了 Fe73.5Cu1Nb3Si13.5B9纳米软磁合金在不同退火温度下 ,微观缺陷与相应相结构和软磁性能的变化规律。

23. dynamic positron emission tomography

动态正电子发射断层(术)

24. Performance study of the Beijing Intense Slow Positron Beam

北京慢正电子强束流性能研究

25. Design of a Pulsing System for Beijing Intense Slow Positron Beam

北京慢正电子强束流束团化系统设计

26. Beijing electron positron collider(BEPC)

北京正负电子对撞机

27. Beam-beam deflection effect in Beijing electron positron collider

北京正负电子对撞机中的束束作用偏转效应

28. Beijing Spectrometer (BES) is an experimental facility of high energy physics on Beijing Electron Positron Collider (BEPC) .

北京谱仪是北京正负电子对撞机上的高能物理实验装置。

29. Medical cyclotron and positron emitting nuclide

医用回旋加速器及正电子核素生产

30. Antimatter/matter reactions have practical applications in medical imaging, see Positron emission tomography (PET).

反物质/物质反应在医学成像有实际应用,注意正电子放射断层摄影术(PET)。

31. The antielectron, or positron, was discovered in 1932.

反电子或正电子,是在1932年被发现。

32. PET (positron emission tomography) imaging conducted while subjects listened to consonant or dissonant chords showed that different localized brain regions were involved in the emotional reactions.

受试者聆听协和和弦与不协和和弦时，以正子断层扫描技术得到的结果是，不同的大脑区域参与了不同的情绪反应。

33. After injecting FDDNP, they used positron emission tomography (PET) scans, which can show how tissue is acting by measuring its use of sugar for basic energy.

在为受试者注射FDDNP以后，他们使用了正电子发射x线断层扫描仪，该方法是依据对组织利用糖作为基础能量的测定，来显示组织活动情况。

34. Positron emission tomography imaging was performed to measure specific microascular blood flow at rest and during pharmacological asodilation by I dipyridamole.

在患者安静状态下和在使用潘生丁时，用正电子发射断层摄影测量其特殊微血管血流速。

35. In positron emission tomography,or PET,a patient ingests or is injected with a slightly radioactive substance that emits positrons,which can be monitored as the substance moves through the body.

在正电子发射X射线摄影技术(PET)中，病人要咽下或被注射一些有少许放射性的物质来发出正电子。当这些物质在人体内运动时，正电子可被监测到。

36. In positron emission tomography, or PET, a patient ingests or is injected with a slightly radioactive substance that emits positrons, which can be monitored as the substance moves through the body.

在正电子发射X射线摄影技术（pet）中，病人要咽下或被注射一些有少许放射性的物质来发出正电子。 当这些物质在人体内运动时，正电子可被监测到。

37. Midway through the linac, when the particles are at an energy of 150 GeV, the electron bunches will take a small detour to produce the positron bunches.

在穿过直线加速器的中途，当粒子的能量达到150GeV时，电子束团会走一条迂迴小路以制造正子束团。

38. Lisa Mosconi and colleagues at the New York University School of Medicine used positron emission tomography, or PET, scans to look at the brains of 53 normal elderly people.

在这种情况下，对老年痴呆症及早发现和预防工作就显得尤为重要。

39. TRAP-BASED POSITRON BEAM TECHNIQUE AND ITS APPLICATIONS

基于捕获的新型正电子束及应用

40. A new generation of positron beams in the form of trap-based beam sources has been developed by positron trapping, confinement and accumulation in a Penning trap.

基于捕获的新型正电子束技术是通过潘宁阱中捕获、约束和积累正电子而发展的新一代正电子束技术。

41. large electron positron storage ring

大型电子正电子对撞机

42. A positron annihilation study on large angle grain boundaries

大角度晶界的正电子湮没研究

43. Functional neuroimaging technologies like single photon emission computerized tomography, or SPECT, and positron emission tomography, or PET, now enable scientists to monitor changes in brain activity.

如今，诸如单光子发射计算机扫描断层成像(SPECT)及正电子发射型断层成像(PET)等功能性大脑成像技术使科学家能够监测大脑活动的变化。

44. In one common application, for instance, patients are given glucose with positron emitters attached, and their brains are monitored as they perform various tasks.

如在一起普通的病例诊断中，病人们被注射了带有正电子发射器的葡萄糖。然后让病人做各种不同的工作，对他们的大脑进行监测。

45. In one common application,for instance,patients are given glucose with positron emitters attached,and their brains are monitored as they perform various tasks.

如在一起普通的病例诊断中，病人们被注射了带有正电子发射器的葡萄糖。然后让病人做各种不同的工作，对他们的大脑进行监测。。

46. Nelles G,Jentzen W,Jueptner M,et al.Arm training induced brain plasticity in stroke studied with serial positron emission tomography[J].Neuroimage,2001,13 (6):1146-1154.

孟兆祥,李厥宝,倪朝民.运动疗法在脑卒中偏瘫康复中的应用[J].中国临床康复,2003,4(7):1159.

47. For example, the mass of an electron is really a coupling between a left handed electron and a right handed electron, which is the antiparticle of a left handed positron.

它们与其他费米子不同处在于它们没有一种叫“色”的性质，所以它们的作用力（弱力、电磁力）会随距离增加变得越来越弱。

48. Chat with eNurse Kim about 'Positron emission tomography (PET scan)' or something else!

定义/细节,诊断,医疗过程,的药物,医生,网页搜索结果

49. AN IMPROVEMENT FOR CANBERRA POSITRON LIFETIME SPECTROMETER

对进口CANBERRA正电子寿命谱仪的改进

50. Keywords conductive ceramics;dopping;positron annihilation.;

导电陶瓷;掺杂;正电子湮没;

51. an electron with a negative charge,as contrasted with a positron

带有负电荷，与正电荷相反的电子

52. conventional positron emission tomography

常规正电子发射断层摄影(术)

53. Positron Annihilation Lifetime Spectra Used in Polymer Materials

应用于聚合物中的正电子湮没寿命谱技术

54. Native defects in ZnO films studied by slow positron beam

慢正电子对ZnO中本征缺陷的研究

55. Beijing intense slow positron beam has been constructed successfully,which utilizes the pulsed electron beam of the BEPC LINAC with high energy to inject into the Ta target.

慢正电子强束流采用高能脉冲电子束流轰击金属钽靶,以产生正负电子对的方式提供正电子,作为慢正电子束流方法学研究和薄膜材料缺陷研究的束流基础。

56. A STUDY OF MICROSTRUCTURE OF EBC COATING BY SLOW POSITRON BEAM

慢正电子束研究电子束固化涂层的微观结构

57. We have measured the Positron lifetime spectra of La_ 2-x M_xCuO_4(LMCO,MSr,Ba,x0.05,0.10,0.125,0.15,0.2) in the room temperature and studied the relationship between the superconductivity and the mechanism of positron annihilation.

我们测量了La2-xMxCuO4(LMCO,M=Sr,Ba,x=0.05,0.10,0.125,0.15,0.2)体系的室温正电子寿命谱,研究了正电子湮没机制与超导电性之间的关系.

58. All patients underwent fluorodeoxyglucose positron emission tomography 6 to 8 months after GKS.

所有的病人都在加马刀放射手术治疗后的6-8个月实施氟-18去氧葡萄糖正子断层摄影。

59. Next the antiatoms encounter a strong electric field that strips apart the antiproton and positron of the weakly bound antiatoms.

接著，反原子会遇到一个强电场，把束缚松散的反原子里的反质子及正子给拆开。

60. Abstract： Image quality of SPECT Positron accord circuitry and PET is affected by the methods of image acquisition,the radial attenuation inner body and the methods of image reconstruction.

摘 要： SPECT、正电子符合线路和PET图像质量受图像采集方法、射线在体内衰减以及图像重建方法等因素的影响。

61. We present a case of esophageal cancer underwent 18F-fluorodeoxyglucose (FDG) positron emission tomography-computed tomography (PET-CT) on purpose of tumor surveillance.

摘要一位46岁男性食道癌患者进行氟-18-去氧葡萄糖正子-电脑断层造影以做为肿瘤监测。

62. A 52-year-old man underwent 18F-FDG positron emission tomography (FDG PET) scan as part of a physical check-up.

摘要一位52岁的男性接受葡萄糖正子断层扫描作为健康检查的其中一个项目。

63. The principle and techniques of positron annihilation including positron annihilation lifetime spectroscopy and coincidence Doppler broadening are introduced in this article.

摘要介绍了正电子湮没的试验原理，以及正电子寿命谱和符合多普勒展宽等试验技术。

64. The positron lifetime technique has been used to study heat-shrunk products of cross-linking PE which came from different factories. Same valuabled results are obtained.

摘要用正电子湮没寿命谱方法，对国内外几个主要厂家的加强型热收缩制品进行了对比测试，得到了一些有参考价值的结果。

65. Objective To investigate the relationship between positron emission tomography (PET) and cognitive dsyfunction in patients with multiple sclerosis (MS).

摘要目的探讨正电子发射体层成像(PET)与多发性硬化(MS)患者认知功能障碍的关系。

66. The problems of low space resolution and low time resolution in the current detector system of Positron Emission Tomography (PET) were studied.

摘要研究了正电子发射层析照相(PET)探测器系统所存在的空间分辨率和时间分辨率低的问题。

67. The concept of positron energy conversion, the advantages of positrons, the possible applications and main research area of positron energy conversion were reviewed in this paper.

摘要简要介绍了正电子能量转换的原理、优点、重要应用前景及主要研究领域。

68. The article summarized the advances of positron and single photon radiopharmceuticals in oncology, the molecular mechanism of tumor cell uptake and ongoing research strategy in future.

摘要该文综述了正电子、单光子核素肿瘤示踪剂的发展、肿瘤细胞摄取的分子学基础以及今后的研究方向。

69. Abstract： The positron annihilation lifeti me spectrum(PALS) method was employed to study the effect of proton radiation on microstructure of the space grade KH-L-Y polysilicone rubber.

摘要： 用正电子淹没寿命谱方法（PALS）研究了质子辐照对空间级硅橡胶KH-L-Y微观结构的影响。

70. Scatter coincident events are the important factor that affects the quality of positron emission tomography(PET) images.

散射事件是影响正电子发射断层扫描术 (Positron emission tomography,PET)图像重建质量的一个重要因素。

71. Abstract: Magnetized water samples were measured by the positron annihilation lifetime spectrometer.

文摘:用正电子湮没寿命谱仪对经过磁场处理的水样品进行了对照测量。

72. Abstract: The microstructures of vacancy-type defect in HgCdTe (MCT) samples grown under micro-gravity condition were studied by positron lifetime measurements.

文摘:采用正电子湮没寿命谱方法，对空间微重力及重力条件下生长的碲镉汞(MCT)材料中的微观缺陷进行了研究。

73. Positron Annihilation in Gelatin Macromolecules

明胶大分子中的正电子湮没行为

74. This article introduces the principles of positron emission tomography.The behavior and procedure of PET,and also the clinical application of PET are described.

本文介绍了正电子发射断层扫描仪(PET)的特点，对其工作原理和工作过程进行了描述，最后给出了PET在临床诊断中的应用和国内外市场概况。

75. The applications of positron annihilation technique in the research of some metal-functional materials are introduced.

本文介绍了正电子湮没方法在若干金属功能材料研究中的一些应用。

76. This paper describes the value of positron emission tomography(PET) in diagnosis and staging of lung cancer.

本文介绍正电子发射断层显像(PET)在肺癌诊断和分期中的应用概况,肯定了其临床应用价值。

77. In this case report, we present a patient of lung cancer with an unusual pattern of FDG uptake on the rim of the gallbladder in FDG positron emission tomography (PET) for staging his lung malignancy.

本病例报告描述一个肺癌病人，在其治疗前的分期正子造影中发现不平常胆囊壁的氟-18-去氧葡萄糖摄取增加。

78. Positron Emission Tomography ( PET ) is one of the ideal techniques to investigate in vivo the neurophysiologic state of brain.

根据现代精神医学的观点，心理活动以及精神症状应该有其神经生理基础，而正电子发射成像技术（PET）是目前活体研究脑神经生理活动最为理想的的手段之一。

79. positron emission tomography (PET)

正子放射断层摄影术

80. Positron Emission Tomography and Life Science in 21 Century

正电子CT(PET)与21世纪生命科学