Fallone B G, Podgorsak E B
Med Phys. 1984 Jan-Feb;11(1):47-9. doi: 10.1118/1.595475.
The feasibility of radiographic image subtraction based on electrostatic imaging techniques is demonstrated. Ionographic latent images are essentially foil electrets with surface charge densities modulated by x-ray transmission through the object. Latent image charging at one polarity corresponding to the production of the primary image, and latent image discharging with the opposite polarity, are used to create the final latent image representing the region of interest. The technique is simple and could be in its present form applied to industrial radiography. Using high-pressure xenon ionographic chambers, the technique could be developed into a clinical tool as an inexpensive alternative to conventional digital radiography.
证明了基于静电成像技术进行射线照相图像减法的可行性。离子成像潜像是本质上是箔驻极体，其表面电荷密度由穿过物体的X射线传输调制。对应于原始图像产生的一个极性的潜像充电，以及相反极性的潜像放电，用于创建表示感兴趣区域的最终潜像。该技术很简单，并且可以以其目前的形式应用于工业射线照相。使用高压氙离子成像室，该技术可以发展成为一种临床工具，作为传统数字射线照相的廉价替代方案。
