Article
Chemistry, Analytical
A. Graefenstein, D. Brueckner, C. Rumancev, J. Garrevoet, V. Galbierz, W. H. Schroeder, C. G. Schroer, G. Falkenberg, A. Rosenhahn
Summary: 3D and 2D-cross-sectional X-ray fluorescence analysis is a powerful tool for imaging element distribution in biological material and quantifying metal homeostasis. This study presents a method using peak fitting and self-absorption correction to reconstruct the cross-sectional distribution of elements in cryogenically prepared leaves. Additionally, the authors introduce an atomographic MCA hyperspectral reconstruction method that improves quantitative analysis of light elements compared to conventional methods.
ANALYTICAL CHEMISTRY
(2023)
Article
Mathematics
Tae-Seok Kang, Seung-Man Yu
Summary: This study aims to develop a predictive model using machine learning to estimate the rotation angle of the vertebral body on X-ray images. By utilizing 3D T-spine CT images and reconstructed X-ray images, the researchers identified the main variables and applied various regression machine learning methods, ultimately finding the Gaussian regression method with the lowest RMSE value.
Article
Engineering, Environmental
Ian Byrnes, Lisa Magdalena Rossbach, Jakub Jaroszewicz, Daniel Grolimund, Dario Ferreira Sanchez, Miguel A. Gomez-Gonzalez, Gert Nuyts, Estela Reinoso-Maset, Koen Janssens, Brit Salbu, Dag Anders Brede, Ole Christian Lind
Summary: Micro- and nanoscopic X-ray techniques were used to investigate the relationship between uranium tissue distributions and adverse effects on the digestive tract of Daphnia magna. The study showed that exposure to uranium nanoparticles (UNPs) resulted in adverse morphological changes to the midgut and hepatic ceca, as well as abnormal intestinal epithelial cells. High-resolution nano-XRF identified U particulates throughout the midgut and within hepatic ceca cells, coinciding with tissue damages. These findings highlight the importance of disrupted intestinal function as a mode of acute U toxicity in D. magna.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Ercan Cakmak, Philip Bingham, Ross W. Cunningham, Anthony D. Rollett, Xianghui Xiao, Ryan R. Dehoff
Summary: This study focuses on the non-destructive characterization of additively manufactured parts using x-ray computed tomography. It compares laboratory XCT and synchrotron-based XCT, concluding that laboratory XCT is a compelling alternative for static defect characterization in AM parts, while synchrotron-based techniques offer unmatched performance for dynamic and sub-micron studies.
MATERIALS CHARACTERIZATION
(2021)
Article
Computer Science, Interdisciplinary Applications
Chuanpeng Wu, Liang Li
Summary: X-ray fluorescence computed tomography (XFCT) is a promising method for imaging the distribution of high-Z elements in a target object. Using a Compton camera for XFCT can overcome the limitations of mechanical collimators and achieve higher photon collection efficiency. In this work, a Compton camera platform is demonstrated for XFCT imaging, showing its potential for handheld XRF imaging and image-guided interventional operation.
IEEE TRANSACTIONS ON MEDICAL IMAGING
(2023)
Article
Chemistry, Physical
Junwei Hou, Hailin Wang, Long Qi, Weichuang Wu, Lifu Li, Rongguang Lai, Xiaoming Feng, Xiang Gao, Weibin Wu, Weizi Cai
Summary: This paper presents the first application of laboratory X-ray computed tomography (CT) technique for analyzing the material parameters of lithium iron phosphate (LFP) battery. The study focuses on the geometric size, heterogeneity, and distribution properties of positive and negative electrode materials. The results provide valuable insights for 3D imaging analysis of electrode materials before and after battery operation.
JOURNAL OF POWER SOURCES
(2022)
Article
Agronomy
Callum P. Scotson, Arjen van Veelen, Katherine A. Williams, Nicolai Koebernick, Dan McKay Fletcher, Tiina Roose
Summary: The aim of the study was to develop an experimental system that allowed the application of iodinated contrast media to intact plant roots in soil and was compatible with time-resolved synchrotron X-ray computed tomography imaging. By using synchrotron X-ray computed tomography and synchrotron X-ray fluorescence mapping, the system was successful in visualizing the translocation of contrast media through root vasculature into the leaves, providing insights into internal fluid transport mechanisms and anatomical features of the plants.
Article
Radiology, Nuclear Medicine & Medical Imaging
Ronald Booij, Marcel van Straten, Andreas Wimmer, Ricardo P. J. Budde
Summary: The study evaluated the impact of breathing state on the accuracy of a 3D camera for body contour detection and patient positioning in thoracic CT. Results showed that acquiring camera images and subsequent CT scans in the same breathing state leads to accurate and precise patient positioning. It is recommended to obtain expiratory planning images when performing a thoracic CT scan in both inspiratory and expiratory breathing states.
EUROPEAN RADIOLOGY
(2022)
Article
Engineering, Multidisciplinary
Monika Zielinska, Magdalena Rucka
Summary: Condition assessment of concrete structures is a significant challenge in non-destructive testing, and ultrasound tomography allows imaging of cracks and fracture damage in concrete. This study investigates the application of ultrasound transmission tomography in imaging cracks in concrete before and after wedge splitting tests, introducing a novel method of determining wave propagation time. The effectiveness of fracture damage imaging using ultrasound tomography is verified by X-ray micro-computed tomography.
Article
Computer Science, Information Systems
Sandun Jayarathna, Md Foiez Ahmed, Liam O'ryan, Hem Moktan, Yonggang Cui, Sang Hyun Cho
Summary: Pixelated semi-conductor detector HEXITEC was characterized for its performance in benchtop XFCT system, demonstrating the necessity for application-specific detector characterization and highlighting the characteristics of HEXITEC under different working conditions. The investigation also showed the potential of high energy resolution in parallel acquisition of XRF signals using HEXITEC.
Article
Energy & Fuels
Shahabeddin Dayani, Henning Markoetter, Anita Schmidt, Martinus Putra Widjaja, Giovanni Bruno
Summary: The effectiveness of several X-ray computer tomography techniques for studying commercial batteries is demonstrated in this paper. General guidelines are provided for selecting suitable imaging equipment and parameters for investigations of lithium-ion batteries at different length scales. Safety mechanisms, manufacturing inconsistencies, defects, and inhomogeneity in batteries are illustrated and quantified. The relationship between beam energy, sample-detector distance, and contrast retrieved from attenuation and phase shift is examined using Synchrotron XCT.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Mechanical
Jairan Nafar Dastgerdi, Omid Jaberi, Heikki Remes
Summary: This paper introduces a new method for characterizing additive manufactured stainless steel samples using XCT, which provides holistic information and predicts fatigue life and failure origins.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Industrial
Davis J. McGregor, Miles V. Bimrose, Sameh Tawfick, William P. King
Summary: Additive manufacturing can produce complex geometries, and X-ray computed tomography is the only non-destructive inspection technique capable of measuring internal features. This study presents an automated method using open-source software to measure nozzle parts made using different materials and processes.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Frank Foerste, Leona Bauer, Korbinian Heimler, Bastian Hansel, Carla Vogt, Birgit Kanngiesser, Ioanna Mantouvalou
Summary: Confocal micro-X-ray fluorescence spectroscopy is a technique that can be used for elemental imaging with 3D resolution using laboratory spectrometers. Quantification techniques are important for interpreting data and reconstructing sample composition and geometry. This article presents an analytical routine for the quantitative investigation of 3D data sets obtained with laboratory spectrometers.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2022)
Article
Agronomy
Jiahua Wang, Zelin Lu, Xiaofeng Xiao, Mengting Xu, Yuqing Lin, Huang Dai, Xiaodan Liu, Fuwei Pi, Donghai Han
Summary: This study utilized X-ray computed tomography for the non-destructive determination of internal defects in chestnuts during storage. The researchers developed an image processing pipeline to accurately identify various types of defective chestnuts.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2023)
