[HTML][HTML] Recent development in x-ray imaging technology: Future and challenges

X Ou, X Chen, X Xu, L Xie, X Chen, Z Hong, H Bai… - Research, 2021 - spj.science.org
X-ray imaging is a low-cost, powerful technology that has been extensively used in medical
diagnosis and industrial nondestructive inspection. The ability of X-rays to penetrate through …

Metal Halide Perovskites for Direct X‐Ray Detection in Medical Imaging: To Higher Performance

J Fan, W Li, Q Zhou, G Yang, P Tang… - Advanced Functional …, 2024 - Wiley Online Library
This review discusses the utilization of metal halide perovskite (MHP) materials in X‐ray
direct imaging detectors for medical application. Compared to traditional semiconductors …

Optimization Method to Predict Optimal Noise Reduction Parameters for the Non-Local Means Algorithm Based on the Scintillator Thickness in Radiography

BK Cha, KH Lee, Y Lee, K Kim - Sensors, 2023 - mdpi.com
The resulting image obtained from an X-ray imaging system depends significantly on the
characteristics of the detector. In particular, when an X-ray image is acquired by thinning the …

Measurements of the noise power spectrum for digital x-ray imaging devices

DS Kim - Physics in Medicine & Biology, 2024 - iopscience.iop.org
Objective. The noise characteristics of digital x-ray imaging devices are determined by
contributions such as photon noise, electronic noise, and fixed pattern noise, and can be …

Halide perovskite x-ray detectors: Fundamentals, progress, and outlook

R Liu, F Li, F Zeng, R Zhao, R Zheng - Applied Physics Reviews, 2024 - pubs.aip.org
Halide perovskites have demonstrated great potential in x-ray detectors, due to their high x-
ray attenuation coefficient, large bulk resistance, ultralong carrier diffusion length, and …

Signal lag measurements based on temporal correlations

DS Kim, E Lee - IEEE Signal Processing Letters, 2020 - ieeexplore.ieee.org
In fluoroscopic imaging, we can acquire x-ray image sequences using a flat-panel dynamic
radiography detector. Because of the charge trapping at photodiodes, lag signals occur at …

Estimation of zero-frequency noise power density in digital imaging

DS Kim, E Lee - IEEE Signal Processing Letters, 2018 - ieeexplore.ieee.org
Noise power spectrum (NPS) at zero frequency can efficiently represent noise properties of
imaging systems. However, estimations of zero-frequency NPS are susceptible to distortion …

Measurement of the lag correction factor in low-dose fluoroscopic imaging

DS Kim, E Lee - IEEE Transactions on Medical Imaging, 2021 - ieeexplore.ieee.org
Lag signals occur at images sequentially acquired from a flat-panel (FP) dynamic detector in
fluoroscopic imaging due to charge trapping in photodiodes and incomplete readouts. This …

Convex combination of images from dual-layer detectors for high detective quantum efficiencies

DS Kim - IEEE Transactions on Biomedical Engineering, 2022 - ieeexplore.ieee.org
Objective: In this paper, a novel dual-layer detector is considered to acquire X-ray images of
high signal-to-noise ratio (SNR) as well as detective quantum efficiency (DQE) especially for …

Linear lag models and measurements of the lag correction factors

E Lee, DS Kim - IEEE Access, 2022 - ieeexplore.ieee.org
For fluoroscopic imaging, flat-panel dynamic detectors can acquire X-ray image sequences
with frame rates higher than 300 frames per second. However, the sequentially acquired …