离子成像（Ion imaging）/比率成像（Ratio imaging），可进行Ca2+,Mg2+,H+,Na+,K+,Zn2+,Ni2+,Fe2+,Hg2+,Pb2+及Cd2+等成像。
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ratio imaging technique [光] 比率成像技术 ; 比率成象技术
fluorescence ratio imaging 荧光比例成像
moment-ratio imaging algorithm 地震矩比成像算法
ratio-imaging fluorescence microscopy 比率成像荧光显微镜
ratio fluorescence imaging system 比率荧光成像系统
The storage system has many advantages as follows: real-time processing, good imaging quality, high signal to noise ratio, and it can be used repeatedly.
实验表明存储系统具有实时处理，成像质量好，信噪比高和能反复使用等优点。
As for the choice of the microwave irradiation frequency, the trade-off must be made in order to insure the penetration depth of the microwave signal, imaging contrast and signal-to-noise ratio.
为了同时兼顾穿透深度、成像对比度和信噪比三方面的需要，选择微波辐照频率时应该采取折中选取的原则。
Then the effects of the voxel size, the geometrical mapping of the projection matrix and the ratio of detector size to imaging object size, on the spatial resolution were discussed.
同时还讨论了体素尺寸、几何映射获取投影矩阵以及探测器尺寸与成像物体尺寸比值对断层图像空间分辨率的影响。
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