X-ray Single-Pixel Imaging with MPGD-based detectors

TL;DR

This paper demonstrates a novel X-ray single-pixel imaging system using MPGD-based detectors and Hadamard patterns, achieving high-resolution imaging with low radiation dose and potential for deep medium imaging.

Contribution

It introduces a new single-pixel X-ray imaging approach with MPGD detectors, combining simulation and experimental validation for improved imaging capabilities.

Findings

Successful image acquisition with thin PLA masks

Effective simulation and experimental results

Potential for deep medium imaging

Abstract

X-ray imaging is an invaluable tool for noninvasive analysis in many fields ranging from basic science to medicine and security. The development of low-dose large area imaging solutions still represents an important challenge for various applications. One solution to the imaging of large areas lies in the development of novel computational imaging systems that can overcome the limitations imposed by hardware, relying instead on numerical processing power. The single-pixel detector, depending on the application, may offer a competitive edge over conventional cameras (being a cheaper alternative to the multi-pixelated solutions). In addition, the single-pixel detector can be used to achieve improved detection efficiency, faster timing response, and good spatial resolution with low radiation dose. Moreover, this technique enables detectors to image through diffuse mediums, increasing the image quality at significant depths, solving the depth penetration issues of other imaging methods. In this work, we explore the application of single-pixel imaging techniques to produce two-dimensional images with high temporal resolution (only if the process is reproducible and the conditions are static), using only a single detector (bucket detector). The setup, based on the application of Hadamard patterns, showed promising results, proving the ability of the system to acquire images using thin PLA based masks (up to 5 mm thickness). Both simulation, using GEANT 4, and experimental setup, based on a time projection chamber (TPC), used in this work to demonstrate this technique will be reported here along with the first results.