The new X‑ray sensor offers clearer images with less radiation
X-ray imaging is generally safe, but it can have adverse effects at high intensities. Scientists have developed a solution that could transform the method of imaging patients and objects.
2:04 PM EST, November 15, 2024
Researchers from Saudi Arabia’s King Abdullah University of Science and Technology have developed a new X-ray sensor that produces clearer images with significantly lower radiation doses. This innovation could revolutionize medical diagnostics and the industrial use of X-rays by increasing their efficiency and enhancing safety.
X-rays form the foundation of modern diagnostic methods, such as imaging and computed tomography. They also play a crucial role in industry. However, their ionizing nature poses health risks, particularly with repeated exposure to high doses of radiation. While generally safe for patients, they can threaten individuals operating radiation-generating devices, as it takes thousands of scans for cumulative radiation effects to manifest.
Scientists have sought ways to reduce exposure for patients and medical staff for years. Repeated exposure to high-energy radiation can harm humans and damage electronic equipment, such as those scanned at airports. A team of researchers from King Abdullah University has made significant progress toward enhancing safety by developing a novel, more sensitive X-ray detector.
"This advancement reduces detection limits and paves the way for safer and more energy-efficient medical imaging and industrial monitoring," said Omar F. Mohammed, the lead author of the study published in the journal "ACS Central Science".
Safer imaging
To increase the detectors' sensitivity, scientists aimed to minimize the background noise generated by the device. They accomplished this by employing specialized perovskite crystals combined with a cascaded electrical system, which allowed them to reduce noise by nearly half. This significantly improved the detection limit of X-rays.
In tests, the new detector revealed minute details on radiograms, such as a metal needle piercing a raspberry or the internal components of a USB cable. The team of scientists claims that this technology could, in the future, contribute to the development of safer and more precise commercial X-ray devices.
Like visible light and radio waves, X-rays are a form of electromagnetic radiation but with much higher energy. This allows them to penetrate most materials, including the human body's soft tissues. When creating an X-ray image, these rays pass through the body and are absorbed by denser tissues, such as bones, resulting in brighter areas on the radiogram.
The new sensor can significantly reduce the radiation dose needed to obtain a clear image, which is crucial for the safety of patients and staff. Additionally, this technology could have industrial applications, enabling more accurate monitoring with less risk of damage to electronic equipment.
