From the November 2020 issue of HealthCare Business News magazine
“It converts X-ray signal directly into electrical signal, thus offering high sensitivity and in situ real-time X-ray photon tracking capabilities,” Wanyi Nie, a staff scientist at Los Alamos National Laboratory, told HCB News. “The improved detection limit will help to reduce required X-ray dosage to achieve high-quality images and protect patients from being exposed under high dosage. We also expect our technology to provide higher spatial resolution to resolve soft matters and provide more details.”
Rich in heavy elements such as lead and iodine, perovskite can more readily absorb X-rays that pass through silicon undetected, enabling it to better detect high-energy X-rays. This makes it better able to monitor X-rays at high-energy research facilities, such as synchrotron light sources.
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Gallium oxide X-ray detectors enable near-real time radiation monitoring
More novel X-ray detector research was reported in May, when a team at North Carolina State University found that an X-ray detector with single-crystal gallium oxide could
enable clinicians to monitor radiation in near-real time.
They assert gallium oxide, which was able to withstand high levels of radiation, may be faster than many existing materials incorporated in X-ray detectors and could be an asset to medical imaging.
“Gallium oxide-based detectors have high radiation resistance and their density is relatively high compared to conventional and emerging X-ray sensing material, which makes them have high stopping power for incoming X-ray radiation and allows them to be operated for longer times without device deterioration,” Ge Yang, an assistant professor of the department of nuclear engineering at NCSU and corresponding author of a paper on the work, told HCB News. “We have shown that their response can be two orders faster than what was previously reported, which highly encourages further research in that area.”
The radiation hardness of gallium oxide enables it to continue doing its job even when exposed to high amounts of radiation. Detectors that are built with it can be operated without the need for cooling, which enables them to be incorporated in different image systems.
