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通过旋转准直器角度模拟准直器角度误差,探讨准直器角度误差对单中心多发脑转移瘤容积旋转调强技术(VMAT)计划Gamma通过率的影响。方法:随机选取21例多发脑转移瘤患者的非共面VMAT计划,以无准直器角度误差放疗计划为模板计划,分别将准直器的角度旋转偏移±0.5°、±1.0°、±1.5°、±2.0°,不进行通量优化,重新计算剂量分布形成模拟计划,利用OmniPro-I’mRT软件比较模板计划与模拟...
针对(10×10) cm2射野,探讨改变射野边界在矩阵中的位置对测量射野大小及Gamma(γ)通过率的影响。方法:使用MatriXX二维电离室矩阵测量(10×10) cm2射野剂量分布,保持射野大小不变,移动X方向准直器和在Y方向移动治疗床两种方式改变射野边界在矩阵中的位置,用OmniPro I’mRT(1.7)软件分析每次移动0.1 cm时射野边长的改变量,同时用实测剂量分布和XiO(4.40)...
Aggregate signature allows non-interactively condensing multiple individual signatures into a compact one. Besides the faster verification, it is useful to reduce storage and bandwidth, and is especia...
During face-to-face communication, listeners integrate speech with gestures. The semantic information conveyed by iconic gestures (e.g., a drinking gesture) can aid speech comprehension in adverse lis...
Observation of the hot universe, from 105 K upward, has a vital impact on some of the most fundamental questions in astrophysics today. Hot plasmas, from the sun and stellar coronae to the cores of ga...
Advances continue to be made in hard x-ray, gamma-ray, neutron detectors and associated technologies for spectroscopy and imaging of these energetic photons and particles. Many types of position and e...
2017SPIE EUV,X射线和伽玛射线天文学光学专题会议(Optics for EUV,X-Ray,and Gamma-Ray Astronomy VIII)。
2017SPIE紫外线,X射线和伽玛射线太空仪器专题会议(UV,X-Ray,and Gamma-Ray Space Instrumentation for Astronomy XX)。
2017SPIE硬X射线,伽玛射线和中子探测器物理专题会议(Hard X-Ray,Gamma-Ray,and Neutron Detector Physics XIX)。
安徽师范大学合成化学课件第二章 特种条件下的无机合成反应 第三节 gamma-射线辅助的无机合成。
Gamma irradiation has been shown to be an effective method of controlling plant bacterial and fungal pathogens, but data on its effect against plant viruses is limited. A mechanism for the inactivati...
A new citizen science project, led by astronomers at the University of Minnesota, is asking for help from the public to identify and categorize hundreds of thousands of ring patterns within images pro...
Gamma-gamma collider is a challenging new type of particle collider that can produce complementary and unique new physics compared to other type of colliders (hh, ee and eh). It can be used as a Higgs...
Breakthrough energy resolution, R(662keV) <4%, has been achieved with a transparent ceramic oxide scintillator, Cerium-doped Gadolinium Yttrium Gallium Aluminum Garnet, or GYGAG(Ce), by optimizing fab...
The peroxisome proliferator-activated receptor gamma (PPARγ) gene plays an important role in the biosynthesis process controlled by a number of fatty acid transcription factors. This study investigate...

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