Article
Computer Science, Interdisciplinary Applications
Jamie Lea Pointon, Tianci Wen, Jenna Tugwell-Allsup, Aaron Sujar, Jean Michel Letang, Franck Patrick Vidal
Summary: This study provides a quantitative comparison of images generated using gVirtualXray (gVXR) and Monte Carlo (MC) simulation, showing that gVXR can generate accurate X-ray images in milliseconds, while MC takes days. This research is important for the fields of X-ray simulation and image registration.
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
(2023)
Article
Materials Science, Characterization & Testing
Leonardo Di Schiavi Trotta, Dmitri Matenine, Margherita Martini, Karl Stierstorfer, Yannick Lemarechal, Pierre Francus, Philippe Despres
Summary: A novel beam-hardening correction algorithm was developed for X-ray Computed Tomography, which uses spectrum information, detector response, filter geometry, and a calibration curve. The correction is embedded in an iterative reconstruction algorithm, simulating the beam-hardening by estimating the X-ray spectrum at each voxel in the forward projection step, resulting in reduced beam-hardening artifacts in reconstructed images.
NDT & E INTERNATIONAL
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Inge A. H. H. van den Berk, Emile Lejeune, Maadrika M. N. P. Kanglie, Tjitske S. R. van Engelen, Wouter de Monye, Shandra Bipat, Patrick M. M. Bossuyt, Jaap M. Stoker, Jan Prins
Summary: The yield of ULDCT is higher than CXR in patients with suspected infection but without respiratory symptoms or signs. ULDCT has a higher sensitivity in detecting pneumonia compared to CXR.
EUROPEAN RADIOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Nathanael Six, Jens Renders, Jan Sijbers, Jan De Beenhouwer
Summary: The proposed method uses quasi-Newton methods to minimize a polychromatic objective function without the need to segment the image into different material regions. Experimental and simulated data were used to investigate reconstruction quality and projection error, showing that quasi-Newton methods outperform other statistical or algebraic reconstruction techniques. Among the considered quasi-Newton methods, Gauss-Newton-Krylov was found to perform the best. Compared to a recently proposed polychromatic algebraic reconstruction technique, quasi-Newton solvers achieved lower reconstruction error and increased convergence speed.
IEEE TRANSACTIONS ON COMPUTATIONAL IMAGING
(2021)
Article
Health Care Sciences & Services
Julien Issa, Abanoub Riad, Raphael Olszewski, Marta Dyszkiewicz-Konwinska
Summary: This retrospective study investigated the impact of cone-beam computed tomography (CBCT) viewing parameters on the identification of the inferior alveolar nerve (IAC). The study found that a slice thickness of 0.25 mm, zero sharpness value, and contrast value of 1200 improved the visibility and accuracy of IAC segmentation in CBCT scans.
JOURNAL OF PERSONALIZED MEDICINE
(2023)
Review
Radiology, Nuclear Medicine & Medical Imaging
Aaron So, Savvas Nicolaou
Summary: CT is a diagnostic tool widely used in clinical applications. The intensity of CT voxel is related to X-ray attenuation, which may not be unique to specific materials. Spectral CT, including dual-energy imaging, is an emerging technology that offers superior material differentiation by utilizing the energy dependence of X-ray attenuation. Dual-energy CT has been successfully implemented in clinical settings.
KOREAN JOURNAL OF RADIOLOGY
(2021)
Article
Chemistry, Analytical
Bo Gao, Brecht Laforce, Laszlo Vincze, Luc Van Hoorebeke, Matthieu N. Boone
Summary: XFCT is a method capable of mapping elemental distribution within an object without destructive sectioning, but it faces challenges due to self-absorption effects. A novel reconstruction method has been proposed in this manuscript to address the issue of accurately reconstructing trace and low Z elements. The method has shown promising results in retrieving the density distribution of relatively low Z elements.
ANALYTICAL CHEMISTRY
(2021)
Article
Optics
Xiaojie Zhao, Yihong Li, Yan Han, Ping Chen, Jiaotong Wei
Summary: This paper proposes a statistical iterative spectral computed tomography (CT) imaging method based on blind separation of polychromatic projections to improve the accuracy of narrow-energy-width image decomposition. Experimental results show that the novel algorithm obtains more accurate narrow-energy-width images compared to state-of-the-art methods.
Article
Pediatrics
Alys R. Clark, Emily Jungmin Her, Russell Metcalfe, Catherine A. Byrnes
Summary: Digital analysis of chest X-rays can accurately identify bronchiectasis features, providing a potentially low-cost and readily available tool for indicating the need for diagnostic CT and ongoing disease monitoring. The study found that structural changes in CT were reflected in CXRs, with CXR analysis showing better correlation to CT measures of abnormality than standard radiological scoring.
EUROPEAN JOURNAL OF PEDIATRICS
(2021)
Article
Engineering, Multidisciplinary
Fabricio Borges de Oliveira, Tamara Reuter, David Plotzki, Florian Wohlgemuth, Markus Batscher, Carsten Bellon, Stefan Kasperl
Summary: The interest in using computer simulations of dimensional x-ray computed tomography (dXCT) for metrology purposes is increasing. Before using simulation software for coordinate metrology tasks, it needs to be qualified for dimensional metrology by correctly simulating physical laws and CT system functionalities with sufficient accuracy. This article presents a method for determining conformity intervals of 2D tests based on 3D tests for the assessment of dXCT simulation software.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2023)
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
Chemistry, Multidisciplinary
Viona S. K. Yokhana, Benedicta D. Arhatari, Brian Abbey
Summary: This study demonstrates the simultaneous decomposition of two low-density materials using the energy-discriminating PiXirad detector and evaluates its application in biological and medical imaging. The effectiveness of this method is validated through optimization of key parameters in simulations and experiments.
APPLIED SCIENCES-BASEL
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Eline Langius-Wiffen, Ingrid M. Nijholt, Rogier A. van Dijk, Erwin de Boer, Jacqueline Nijboer-Oosterveld, Wouter B. Veldhuis, Pim A. de Jong, Martijn F. Boomsma
Summary: This study aimed to assess the performance of an established AI algorithm trained on conventional CT images to detect pulmonary embolism on virtual monochromatic images. The results showed that there was no significant difference in the diagnostic accuracy of the algorithm between virtual monochromatic images and conventional CT images, indicating its reassuring use in clinical practice.
EUROPEAN RADIOLOGY
(2023)
Article
Medicine, General & Internal
Sohail Ahmed Khan, Murli Manohar, Maria Khan, Samita Asad, Syed Omair Adil
Summary: Radiological imaging was used to assess patterns and severity of COVID-19 pulmonary disease, with majority of patients showing severe/critical findings on X-rays, including bilateral lung involvement with alveolar pattern and consolidation. On CT scans, the most common findings were ground-glass opacity (GGO) and crazy paving.
PAKISTAN JOURNAL OF MEDICAL SCIENCES
(2021)
Article
Chemistry, Inorganic & Nuclear
Joel Vazquez-Banuelos, Guillermo Eduardo Campillo-Rivera, Hector Rene Vega-Carrillo, Carina Oliva Torres-Cortes, Claudia Angelica Marquez-Mata, Marcial Vasquez-Arteaga
Summary: The use of ionizing radiation for medical purposes is increasing, especially in diagnostic imaging such as computed tomography (CT). However, this also leads to increased exposure to radiation for both patients and healthcare professionals. CT scans, although providing detailed and high-quality images, contribute to a significant portion of the medical radiation dose accumulated by the patient. This study aims to estimate the absorbed dose in sensitive organs due to scattered radiation during a chest CT.
APPLIED RADIATION AND ISOTOPES
(2023)
Article
Anatomy & Morphology
Craig D. Byron, Anthony Herrel, Elin Pauwels, Amelie De Muynck, Biren A. Patel
JOURNAL OF MORPHOLOGY
(2015)
Article
Rheumatology
Peggy Jacques, Stijn Lambrecht, Eveline Verheugen, Elin Pauwels, George Kollias, Maria Armaka, Marleen Verhoye, Annemie Van der Linden, Rik Achten, Rik J. Lories, Dirk Elewaut
ANNALS OF THE RHEUMATIC DISEASES
(2014)
Article
Veterinary Sciences
E. H. S. Hendrickson, K. Olstad, A. Nodtvedt, E. Pauwels, L. van Hoorebeke, N. I. Dolvik
EQUINE VETERINARY JOURNAL
(2015)
Article
Soil Science
Denis Van Loo, Liesbeth Bouckaert, Olivier Leroux, Elin Pauwels, Manuel Dierick, Luc Van Hoorebeke, Veerle Cnudde, Stefaan De Neve, Steven Sleutel
Article
Geosciences, Multidisciplinary
Sam Poppe, Eoghan P. Holohan, Elin Pauwels, Veerle Cnudde, Matthieu Kervyn
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2015)
Article
Instruments & Instrumentation
Matthieu N. Boone, Jan Garrevoet, Pieter Tack, Oliver Scharf, David P. Cormode, Denis Van Loo, Elin Pauwels, Manuel Dierick, Laszlo Vincze, Luc Van Hoorebeke
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2014)
Editorial Material
Radiology, Nuclear Medicine & Medical Imaging
Elin Pauwels, Frederik Cleeren, Terence Tshibangu, Michel Koole, Kim Serdons, Jeroen Dekervel, Eric Van Cutsem, Chris Verslype, Koen Van Laere, Guy Bormans, Christophe M. Deroose
EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING
(2019)
Article
Radiology, Nuclear Medicine & Medical Imaging
Elin Pauwels, Sofie Van Binnebeek, Vincent Vandecaveye, Kristof Baete, Hubert Vanbilloen, Michel Koole, Felix M. Mottaghy, Karin Haustermans, Paul M. Clement, Kristiaan Nackaerts, Eric Van Cutsem, Chris Verslype, Christophe M. Deroose
JOURNAL OF NUCLEAR MEDICINE
(2020)
Article
Radiology, Nuclear Medicine & Medical Imaging
Elin Pauwels, Frederik Cleeren, Terence Tshibangu, Michel Koole, Kim Serdons, Lennert Boeckxstaens, Jeroen Dekervel, Timon Vandamme, Willem Lybaert, Bliede Van den Broeck, Annouschka Laenen, Paul M. Clement, Karen Geboes, Eric Van Cutsem, Sigrid Stroobants, Chris Verslype, Guy Bormans, Christophe M. Deroose
Summary: A recent multicenter trial demonstrated that 18F-AlF-OC, as a radiotracer, is noninferior to 68Ga-DOTA-SSA in somatostatin receptor imaging for neuroendocrine tumor patients. This study provides scientific evidence for the clinical application of 18F-AlF-OC.
JOURNAL OF NUCLEAR MEDICINE
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Elin Pauwels, Sofie Celen, Kristof Baete, Michel Koole, Oliver Bechter, Marie Bex, Marleen Renard, Paul M. Clement, Sander Jentjens, Kim Serdons, Koen Van Laere, Guy Bormans, Christophe M. Deroose
Summary: This study evaluated the comparison between [F-18]MFBG and [I-123]MIBG as an alternative method, and the results showed that [F-18]MFBG has good imaging characteristics and improved lesion targeting.
EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Lennert Boeckxstaens, Elin Pauwels, Vincent Vandecaveye, Wies Deckers, Frederik Cleeren, Jeroen Dekervel, Timon Vandamme, Kim Serdons, Michel Koole, Guy Bormans, Annouschka Laenen, Paul M. Clement, Karen Geboes, Eric Van Cutsem, Kristiaan Nackaerts, Sigrid Stroobants, Chris Verslype, Koen Van Laere, Christophe M. Deroose
Summary: Fluorine-18-labeled SSAs have the potential to become the next-generation tracer in SSTR-imaging in neuroendocrine tumor (NET) patients. We demonstrated the superiority of [F-18]AlF-OC PET/CT over [Ga-68]Ga-DOTA-SSA in clinical performance. MRI analysis confirmed that the majority of [F-18]AlF-OC PET lesions are true NET lesions.
Article
Chemistry, Medicinal
Terence Tshibangu, Christopher Cawthorne, Kim Serdons, Elin Pauwels, Willy Gsell, Guy Bormans, Christophe M. Deroose, Frederik Cleeren
EJNMMI RADIOPHARMACY AND CHEMISTRY
(2020)
Article
Instruments & Instrumentation
L. Brabant, M. Dierick, E. Pauwels, M. N. Boone, L. Van Hoorebeke
JOURNAL OF X-RAY SCIENCE AND TECHNOLOGY
(2014)
Review
Radiology, Nuclear Medicine & Medical Imaging
Elin Pauwels, Frederik Cleeren, Guy Bormans, Christophe M. Deroose
AMERICAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING
(2018)
Article
Instruments & Instrumentation
Taisei Hayashi, Kensei Ichiba, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Cr-doped Mg4Ta2O9 single crystals with different doping levels were synthesized using the floating zone method, and their photoluminescence and scintillation properties were evaluated. The results showed that Cr-doped Mg4Ta2O9 single crystals exhibited broad emission bands in the near-infrared region and showed scintillation characteristics within specific wavelength ranges. Additionally, the samples with different Cr doping levels demonstrated different lower detection limits based on the dose rate response function.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
S. Marouf, A. C. Chami, Y. Boudouma
Summary: This study develops a Monte Carlo simulation approach to describe proton-induced secondary electron emission in solids. Theoretical modeling based on the Mott's elastic scattering cross-section and Lindhard's dielectric function was used to calculate the double differential cross-section (DDCS) of excited electrons and describe electron transport in the medium. The results for aluminum show the angular and energy distributions of backscattered electrons for incident protons with energy below 25 keV at normal incidence, and the total electron emission yield also agrees well with available measurements.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
Weipeng Yan, Baojun Duan, Zijian Zhu, Yan Song, Guzhou Song, Jiming Ma, Binkang Li, Yucheng Liu
Summary: This article reports on the scintillation performance of Lithium-doped 2D (PEA)2PbBr4 perovskite single crystals synthesized at room temperature. The crystals exhibit fast decay time, high light yield, and high spatial resolution, making them highly promising for medical diagnostic applications.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
S. B. Vishwakarma, S. K. Dubey, R. L. Dubey, I. Sulania, D. Kanjilal
Summary: Investigations have been conducted on the implanted SiO2 thin film after thermal annealing using various analytical techniques. The results revealed the absence of vacancy defects, variations in vibrational modes and the formation of new structures. The photoluminescence intensity of the annealed SiO2 samples was higher, with a decrease in non-radiative defect centers and an increase in radiative Si:SiO2 interface states. Additionally, the presence of silicon nanoclusters formed after annealing resulted in an additional radiative recombination peak. Furthermore, the formation of new SiOx structures was observed after thermal annealing.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
M. Koshimizu, S. Kurashima, A. Kimura, M. Taguchi
Summary: By observing the scintillation time profiles of CeF3 under irradiations of pulsed beams with different LETs, we found that the initial decay was faster for higher LET, which is consistent with previous studies on other self-activated scintillators. This faster decay at higher LET can be explained by the competition between the scintillation caused by 5d-4f transition of Ce3+ ions and quenching due to the interaction between excited Ce3+ ions close to each other.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)
Article
Instruments & Instrumentation
Junjie Shi, Jianhong Hao, Fang Zhang, Qiang Zhao, Bixi Xue, Jieqing Fan, Zhiwei Dong
Summary: This study examined the neutralization process and beam quality of a hydrogen beam by emitting negative hydrogen ions to a hydrogen target. The findings showed that the neutralization efficiency was influenced by variables such as the transport distance, energy, and target gas density. However, the maximal neutralization efficiency was not affected by the density of the target gas or the energy of the negative hydrogen ions.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2024)