absorption contrast

Moreover , the key parameters of absorption contrast image and phase contrast image were simulated theoretically and discussed .

此外，对吸收衬底象和位相衬度象的关键参量进行了计算模拟和讨论。

Conventional X ray radiography is based on absorption contrast and assumes geometrical optics .

常规X射线成象技术是建立在吸收衬度和几何光学基础上。

Comparison between phase contrast and absorption contrast was made , indicating the obvious advantage of phase contrast for cellular imaging at hard X-ray energy range .

对比了相位衬度与吸收衬度的成像结果，阐明了相位衬度在硬X射线细胞成像中的显著优势。

Purpose : At present , the conventional medical X-ray imaging is imaged with absorption contrast , the resolution isn 't enough high , however , DEI images by the phase-contrast , not the absorption imaging mechanism , which is adapt to weak-absorption tissue imaging , especially the soft issue .

目的：目前的常规X线医学成像是通过吸收衬度成像，但分辨率不够高，由于DEI采用相位衬度机制而不是依赖于物体的吸收，故适合弱吸收组织尤其是软组织成像。

An Experimental Computation for Maximum Absorption Wavelength of Contrast Enhancement Materials

反差增强材料最大吸收波长的经验估算

The adding of the iodide ions into the subsurface layer of the silver halide crystal could increase the light absorption , sensitivity and contrast of the emulsion .

碘离子掺入到亚表层可增加乳剂的光吸收，提高感光度，增加反差。