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Researchers at the University of Surrey have unveiled a breakthrough in materials that could lead to the development of flexible X-ray detectors. These detectors, crafted from “tissue-equivalent” materials, mimic the behavior of human tissue when exposed to X-rays, a stark contrast to conventional detectors constructed from heavy, inflexible substances like silicon or germanium.
The resulting devices are not only more cost-effective but also adaptable to the shape of the objects being scanned. This innovation enhances the accuracy of patient screenings and reduces risks associated with imaging tumors and administering radiotherapy, according to the team at Surrey.
Dr. Prabodhi Nanayakkara, the lead researcher, emphasized the material’s flexibility, affordability, and sensitivity. Additionally, he highlighted its tissue-equivalent nature, opening up possibilities for live dosimetry, a feat currently unattainable with existing technology.
While most X-ray detectors in the market are cumbersome, energy-intensive, and costly for covering large areas, organic semiconductors composed of hydrogen and carbon offer a more flexible alternative. However, until now, they fell short in delivering X-ray images with comparable levels of detail.
To address this gap, scientists at the University of Surrey’s Advanced Technology Institute (ATI) devised devices based on an ink, incorporating small amounts of high atomic number elements into an organic semiconductor.
Expanding on their prior work in this area, the new detector emulates human tissue’s response to X-rays. This breakthrough could lead to safer methods for radiotherapy, mammography, and radiography.
Professor Ravi Silva, director of Surrey’s ATI, envisions diverse applications for this technology, including radiotherapy, historical artifact scanning, and security screening. He commended the promise shown by the technology in various fields.
Professor Martin Heeney from Imperial College London, a co-author of the study, expressed excitement over the results, especially given that this was the first material explored, leaving ample room for further advancements.
The research findings were published in Advanced Science.
