Table-top X-ray Ghost Imaging with Ultra-Low Radiation

TL;DR

This paper demonstrates a novel table-top x-ray ghost imaging technique that achieves high-contrast images with ultra-low radiation doses, significantly reducing damage to biological specimens.

Contribution

It introduces a new x-ray ghost imaging method using a table-top source to obtain high-quality images at extremely low radiation levels.

Findings

Achieved ghost imaging with single-photon-level x-ray radiation.

Higher contrast-to-noise ratio compared to conventional x-ray imaging at the same dose.

Potential for reducing radiation damage in biological imaging.

Abstract

The use of x-ray imaging in medicine and other research is well known. Generally, the image quality is proportional to the total flux, but high photon energy could severely damage the specimen, so how to decrease the radiation dose while maintaining image quality is a fundamental problem. In "ghost" imaging, an image is retrieved from a known patterned illumination field and the total intensity transmitted through the object collected by a bucket detector. Using a table-top x-ray source we have realized ghost imaging of plane and natural objects with ultra-low radiation on the order of single photons. Compared with conventional x-ray imaging, a higher contrast-to-noise ratio is obtained for the same radiation dose. This new technique could greatly reduce radiation damage of biological specimens.