文章详细信息 关键词： CT;;噪声;;场均匀性;;检测方法 [gap=880]Keywords: CT;noise;field uniformity;detection method
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.ectiveness）、归一化场地衰减（Normalized Site Attenuation）、场地均匀性（Field Uniformity），以及 场地电压驻波比 （ SVSWR ）是衡量一个半电波暗室是否合格的四个基本指标。
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radiation field uniformity 源辐射场均匀性
flood field uniformity test 泛源野均匀性试验
flat-field uniformity 平面场均一性
flow field uniformity 流场均匀性
magnetic field uniformity 磁场均匀化
acoustic field uniformity 声场均匀性
field uniformity correction 视野均匀性校正
Proper design of stir will improve the field uniformity and lower the minimum useable frequency.
合理设计的搅拌器会改善混响室的场均匀性、降低最低可用频率。
参考来源 - 混响室的仿真与优化Third,computer-aided testing of noise and field uniformity.
3．噪声和场均匀性的计算机辅助检测方法。
参考来源 - 螺旋CT图像性能参数检测方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Proper design of stir will improve the field uniformity and lower the minimum useable frequency.
合理设计的搅拌器会改善混响室的场均匀性、降低最低可用频率。
From the point of field uniformity, the field uniformity of reverberation chamber with each material can satisfy the requirement of Standard IEC61000-4-21.
从电场均匀性方面来看，四种不同电导率材料的混响室，其电场均匀性均满足标准IEC61000 - 4 - 21的要求。
This suggests that there might be a reciprocity between valvular lesion and flow field uniformity as well as turbulent shear stress, which should be further studied.
由此提示，心瓣膜下游流场均匀性及湍流剪应力与瓣膜损害之间可能存在某种互为因果的关系，值得进一步研究。
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