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- light photon emission 可见光光子发射
- SPECT: Single Photon Emission Computer Tomgraphy. 单光子发射计算机断层扫描仪。
- Because gallium arsenide has a high emission rate (it amplifies light efficiently because its bands line up), its total photon emissions easily outpace its absorptions. 由于砷化镓发光效率很高(因为能带呈正对排列,所以可以很有效率地放大光),因此其光子发射总数很容易就可以超过其吸收总数。
- At present,usual examinations for this disease are CT,MRI and single photon emission computed tomography(SPECT),etc. 目前,该病常用的检查方法有CT扫描、MRI成像及单光子发射型计算机体层摄影等方法。
- Methods The rCBF of 22 unmedicated patients with OCD was measured with single photon emission tomography (SPECT). 方法 采用单光子发射计算机扫描 (SPECT)技术 ,对未服药的 2 2例强迫症患者于静息及症状诱发状态下行局部脑血流 (rCBF)动态显像研究。
- The ultraweak photon emission was observed from plant seedling at stage of germination by using PIAS. 摘要采用光子计数成像系统(IAS)植物幼苗萌发过程的超弱发光进行观察。
- The Exact Electromagnetic Field Description of Photon Emission, Absorption, and Radiation Pattern. II. 关于光子辐射、吸收及辐射图形的精确电磁场描述II.
- Closely related to PET is single- photon emission computed tomography, or SPECT. 与正电子发射X射线摄影技术密切相关的是单光子发射计算机化成像(SPECT)。
- The principle and image properties of single photon emission computed tomography are introduced. 探讨了单光子发射型计算机断层成像的原理与图像特点.
- A kind of process of designing and fabricating intense pulsed light photon rejuvenation system based on the technology of singlechip micro-processor is introduced. 论述了一种利用单片机技术实现强光光子嫩肤机控制系统的研制结果。
- The ischemia region of the heart decreased through the single photon emission computed tomographic(SPECT) test. 单光子发射计算机体层摄影术(SPECT)检查心肌缺血区缩小。
- The characteristics of the biological system can be accumulated by fluorescence, chemiluminescence, or ultra-weak photon emission of the creature. 通过对荧光信号、化学发光信号或超微弱光子辐射的探测,可以了解生物体内在的特点。
- Ultraweak photon emission (UPE) from biological syste ms is a kind of spontaneous phenomenon in nature and occurs in all living organi sms. 花生种子萌发过程中超弱发光强度变化呈双峰曲线,分别对应于种子萌发早期事件的吸涨和呼吸激增;
- The statistic characteristics of single photon emission in single semiconductor quantum dot with pulse excitation have been investigated. 研究了脉冲激发下单个半导体量子点中单光子发射的统计特性.
- Objective To evaluate the distributing rule of skeleton metastasis in patients with prostate cancer using SPECT(Single Photon Emission Computed Tomography). 目的通过全身骨核素显像,探讨前列腺癌转移病灶在全身骨的分布情况。
- It showed that PIAS could objectively display the spontaneous ultraweak photon, and this results provided experimental basis for research mechanism of ultraweak photon emission. 光子成像系统可客观地比较生物自发超弱发光,为进一步研究超弱发光机理提供实验基础。
- Objective To assess cardiac function in patients after percutaneous coronary intervention(PCI) with single photon emission computed tomography(SPECT) and echocardiography(UCG). 目的应用单光子发射计算机断层显像(SPECT)及超声心动图(UCG)评价冠心病患者行经皮冠状动脉介入(PCI)治疗后对左心功能的影响。
- The light photons, or bundle of light energy, knock electrons in the chromium atoms. 光子,即光能束,冲击铬原子中的电子。
- Either electrons or protons in the jet could interact with light photons or matter to create the extremely high-energy gamma rays. 在射流中,不管是电子还是质子都可以跟可见光子或者物质相互作用,产生极高能量的伽马射线。
- The scintillators absorb the X-rays and convert them into visible light photons that then pass onto the photodiode array. 这个闪烁物可以吸收X射线并将他转化成可见光光子,然后进入光电二极管阵列。