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791 Results Found

  • Article
  • Open Access
1 Citations
2,438 Views
18 Pages

Target Design in SEM-Based Nano-CT and Its Influence on X-ray Imaging

  • Jonas Fell,
  • Felix Wetzler,
  • Michael Maisl and
  • Hans-Georg Herrmann

Nano-computed tomography (nano-CT) based on scanning electron microscopy (SEM) is utilized for multimodal material characterization in one instrument. Since SEM-based CT uses geometrical magnification, X-ray targets can be adapted without any further...

  • Feature Paper
  • Article
  • Open Access
11 Citations
3,443 Views
13 Pages

Nanoceria as Safe Contrast Agents for X-ray CT Imaging

  • Ana García,
  • Juan Antonio Cámara,
  • Ana María Boullosa,
  • Muriel F. Gustà,
  • Laura Mondragón,
  • Simó Schwartz,
  • Eudald Casals,
  • Ibane Abasolo,
  • Neus G. Bastús and
  • Víctor Puntes

29 July 2023

Cerium oxide nanoparticles (CeO2NPs) have exceptional catalytic properties, rendering them highly effective in removing excessive reactive oxygen species (ROS) from biological environments, which is crucial in safeguarding these environments against...

  • Article
  • Open Access
36 Citations
7,272 Views
24 Pages

29 May 2018

The particle morphology and fabric of a granular soil influence its mechanical behavior. This study focuses on the evolution of the particle-level fabric and morphology of a uniformly graded sand sample subjected to one-dimensional compression up to...

  • Article
  • Open Access
43 Citations
5,378 Views
12 Pages

CNN–RNN Network Integration for the Diagnosis of COVID-19 Using Chest X-ray and CT Images

  • Isoon Kanjanasurat,
  • Kasi Tenghongsakul,
  • Boonchana Purahong and
  • Attasit Lasakul

25 January 2023

The 2019 coronavirus disease (COVID-19) has rapidly spread across the globe. It is crucial to identify positive cases as rapidly as humanely possible to provide appropriate treatment for patients and prevent the pandemic from spreading further. Both...

  • Article
  • Open Access
25 Citations
4,641 Views
16 Pages

12 July 2020

The use of lightweight concrete has continuously increased because it has a primary benefit of reducing dead load in a concrete infrastructure. Various properties of lightweight concrete, such as compressive strength, elastic modulus, sound absorptio...

  • Article
  • Open Access
61 Citations
5,162 Views
21 Pages

Design and Analysis of a Deep Learning Ensemble Framework Model for the Detection of COVID-19 and Pneumonia Using Large-Scale CT Scan and X-ray Image Datasets

  • Xingsi Xue,
  • Seelammal Chinnaperumal,
  • Ghaida Muttashar Abdulsahib,
  • Rajasekhar Reddy Manyam,
  • Raja Marappan,
  • Sekar Kidambi Raju and
  • Osamah Ibrahim Khalaf

Recently, various methods have been developed to identify COVID-19 cases, such as PCR testing and non-contact procedures such as chest X-rays and computed tomography (CT) scans. Deep learning (DL) and artificial intelligence (AI) are critical tools f...

  • Article
  • Open Access
22 Citations
2,931 Views
20 Pages

Saturation Modeling of Gas Hydrate Using Machine Learning with X-Ray CT Images

  • Sungil Kim,
  • Kyungbook Lee,
  • Minhui Lee,
  • Taewoong Ahn,
  • Jaehyoung Lee,
  • Hwasoo Suk and
  • Fulong Ning

24 September 2020

This study conducts saturation modeling in a gas hydrate (GH) sand sample with X-ray CT images using the following machine learning algorithms: random forest (RF), convolutional neural network (CNN), and support vector machine (SVM). The RF yields th...

  • Article
  • Open Access
15 Citations
2,739 Views
19 Pages

9 November 2020

This study proposes three-phase saturation identification using X-ray computerized tomography (CT) images of gas hydrate (GH) experiments considering critical GH saturation (SGH,C) based on the machine-learning method of random forest. Eight GH sampl...

  • Article
  • Open Access
21 Citations
3,147 Views
16 Pages

On the Implementation of a Post-Pandemic Deep Learning Algorithm Based on a Hybrid CT-Scan/X-ray Images Classification Applied to Pneumonia Categories

  • Abdelghani Moussaid,
  • Nabila Zrira,
  • Ibtissam Benmiloud,
  • Zineb Farahat,
  • Youssef Karmoun,
  • Yasmine Benzidia,
  • Soumaya Mouline,
  • Bahia El Abdi,
  • Jamal Eddine Bourkadi and
  • Nabil Ngote

24 February 2023

The identification and characterization of lung diseases is one of the most interesting research topics in recent years. They require accurate and rapid diagnosis. Although lung imaging techniques have many advantages for disease diagnosis, the inter...

  • Review
  • Open Access
19 Citations
10,093 Views
29 Pages

A Pictorial Review of the Role of Imaging in the Detection, Management, Histopathological Correlations, and Complications of COVID-19 Pneumonia

  • Barbara Brogna,
  • Elio Bignardi,
  • Claudia Brogna,
  • Mena Volpe,
  • Giulio Lombardi,
  • Alessandro Rosa,
  • Giuliano Gagliardi,
  • Pietro Fabio Maurizio Capasso,
  • Enzo Gravino and
  • Lanfranco Aquilino Musto
  • + 5 authors

Imaging plays an important role in the detection of coronavirus (COVID-19) pneumonia in both managing the disease and evaluating the complications. Imaging with chest computed tomography (CT) can also have a potential predictive and prognostic role i...

  • Proceeding Paper
  • Open Access
18 Citations
2,253 Views
9 Pages

Mechanical Characterization of Nano-Reinforced Mortar: X-ray Micro-CT for 3D Imaging of Microstructure

  • Athanasia K. Thomoglou,
  • Jacob G. Fantidis,
  • Maristella E. Voutetaki,
  • Zoi S. Metaxa and
  • Constantin E. Chalioris

Microstructural characteristics and mechanical properties of nano-reinforced cementitious mortar using multi-walled carbon nanotubes (MWCNTs), dispersed in an aqueous solution by applying ultra-solicitation, were studied using X-ray microcomputed tom...

  • Review
  • Open Access
101 Citations
13,580 Views
43 Pages

A Comparative Systematic Literature Review on Knee Bone Reports from MRI, X-Rays and CT Scans Using Deep Learning and Machine Learning Methodologies

  • Hafsa Khalid,
  • Muzammil Hussain,
  • Mohammed A. Al Ghamdi,
  • Tayyaba Khalid,
  • Khadija Khalid,
  • Muhammad Adnan Khan,
  • Kalsoom Fatima,
  • Khalid Masood,
  • Sultan H. Almotiri and
  • Aqsa Ahmed
  • + 1 author

The purpose of this research was to provide a “systematic literature review” of knee bone reports that are obtained by MRI, CT scans, and X-rays by using deep learning and machine learning techniques by comparing different approaches&mdas...

  • Article
  • Open Access
2,545 Views
22 Pages

In image-guided surgery (IGS) practice, combining intraoperative 2D X-ray images with preoperative 3D X-ray images from computed tomography (CT) enables the rapid and accurate localization of lesions, which allows for a more minimally invasive and ef...

  • Article
  • Open Access
9 Citations
3,367 Views
16 Pages

Ligand-Specific Nano-Contrast Agents Promote Enhanced Breast Cancer CT Detection at 0.5 mg Au

  • Kalyan Ramesh,
  • Alice Truong,
  • Yuzhen Wang,
  • Mary Rusckowski and
  • Manos Gkikas

1 September 2022

For many cancer types, being undetectable from early symptoms or blood tests, or often detected at late stages, medical imaging emerges as the most efficient tool for cancer screening. MRI, ultrasound, X-rays (mammography), and X-ray CT (CT) are curr...

  • Article
  • Open Access
17 Citations
6,070 Views
15 Pages

Spectral Tomography for 3D Element Detection and Mineral Analysis

  • Jose R. A. Godinho,
  • Gabriel Westaway-Heaven,
  • Marijn A. Boone and
  • Axel D. Renno

1 June 2021

This paper demonstrates the potential of a new 3D imaging technique, Spectral Computed Tomography (sp-CT), to identify heavy elements inside materials, which can be used to classify mineral phases. The method combines the total X-ray transmission mea...

  • Article
  • Open Access
21 Citations
4,275 Views
21 Pages

8 June 2020

Pore-scale modeling with a reconstructed rock microstructure has become a dominant technique for fluid flow characterization in rock thanks to technological improvements in X-ray computed tomography (CT) imaging. A new method for the construction of...

  • Article
  • Open Access
63 Citations
9,402 Views
17 Pages

3 November 2016

This paper presents the results of X-ray CT imaging of the microstructure of sand particles subjected to high pressure one-dimensional compression leading to particle crushing. A high resolution X-ray CT machine capable of in situ imaging was employe...

  • Article
  • Open Access
13 Citations
4,360 Views
18 Pages

Nanophosphor-Based Contrast Agents for Spectral X-ray Imaging

  • Kevin Smith,
  • Matthew Getzin,
  • Josephine J. Garfield,
  • Sanika Suvarnapathaki,
  • Gulden Camci-Unal,
  • Ge Wang and
  • Manos Gkikas

30 July 2019

Lanthanide-based nanophosphors (NPhs) are herein developed as contrast agents for spectral X-ray imaging, highlighting the chemical, macromolecular and structural differences derived from ligand exchange on computed tomography (CT) and solvent disper...

  • Article
  • Open Access
8 Citations
4,636 Views
22 Pages

Three-Dimensional X-ray Imaging of β-Galactosidase Reporter Activity by Micro-CT: Implication for Quantitative Analysis of Gene Expression

  • Olga Ermakova,
  • Tiziana Orsini,
  • Paolo Fruscoloni,
  • Francesco Chiani,
  • Alessia Gambadoro,
  • Sabrina Putti,
  • Maurizio Cirilli,
  • Alessio Mezzi,
  • Saulius Kaciulis and
  • Glauco P. Tocchini-Valentini
  • + 3 authors

Acquisition of detailed anatomical and molecular knowledge from intact biological samples while preserving their native three-dimensional structure is still a challenging issue for imaging studies aiming to unravel a system’s functions. Three-dimensi...

  • Article
  • Open Access
97 Citations
8,694 Views
15 Pages

COVID-19 Symptoms Detection Based on NasNetMobile with Explainable AI Using Various Imaging Modalities

  • Md Manjurul Ahsan,
  • Kishor Datta Gupta,
  • Mohammad Maminur Islam,
  • Sajib Sen,
  • Md. Lutfar Rahman and
  • Mohammad Shakhawat Hossain

The outbreak of COVID-19 has caused more than 200,000 deaths so far in the USA alone, which instigates the necessity of initial screening to control the spread of the onset of COVID-19. However, screening for the disease becomes laborious with the av...

  • Article
  • Open Access
9 Citations
4,531 Views
13 Pages

Neutron computed tomography (nCT) has been established at many major neutron sources worldwide, using high-end equipment requiring major investment and development. Many older and smaller reactors would also be capable of doing nCT, but cannot afford...

  • Review
  • Open Access
21 Citations
5,073 Views
31 Pages

A Survey on Deep Learning in COVID-19 Diagnosis

  • Xue Han,
  • Zuojin Hu,
  • Shuihua Wang and
  • Yudong Zhang

20 December 2022

According to the World Health Organization statistics, as of 25 October 2022, there have been 625,248,843 confirmed cases of COVID-19, including 65,622,281 deaths worldwide. The spread and severity of COVID-19 are alarming. The economy and life of co...

  • Article
  • Open Access
7 Citations
3,920 Views
29 Pages

29 October 2021

The objective of this study is to quantitatively evaluate the soil structure behavior when under shear stress to understand the mechanism of shear zone formation using a micro-focus X-ray computed tomography (CT) scanner to visualize the internal sam...

  • Article
  • Open Access
4 Citations
2,275 Views
22 Pages

31 May 2023

This research investigates the influence of the pre-existing defects within concrete taken from the in-service irrigation structure on the strain distribution. The X-ray Computed Tomography (CT) technique is employed to investigate the internal concr...

  • Article
  • Open Access
3 Citations
2,858 Views
22 Pages

Airspace Diameter Map—A Quantitative Measurement of All Pulmonary Airspaces to Characterize Structural Lung Diseases

  • Sanja Blaskovic,
  • Pinelopi Anagnostopoulou,
  • Elena Borisova,
  • Dominik Schittny,
  • Yves Donati,
  • David Haberthür,
  • Zhe Zhou-Suckow,
  • Marcus A. Mall,
  • Christian M. Schlepütz and
  • Johannes C. Schittny
  • + 2 authors

28 September 2023

(1) Background: Stereological estimations significantly contributed to our understanding of lung anatomy and physiology. Taking stereology fully 3-dimensional facilitates the estimation of novel parameters. (2) Methods: We developed a protocol for th...

  • Review
  • Open Access
56 Citations
19,809 Views
12 Pages

Stem Cell Tracking by Nanotechnologies

  • Chiara Villa,
  • Silvia Erratico,
  • Paola Razini,
  • Fabrizio Fiori,
  • Franco Rustichelli,
  • Yvan Torrente and
  • Marzia Belicchi

12 March 2010

Advances in stem cell research have provided important understanding of the cell biology and offered great promise for developing new strategies for tissue regeneration. The beneficial effects of stem cell therapy depend also by the development of ne...

  • Article
  • Open Access
51 Citations
4,909 Views
13 Pages

23 January 2018

The thermodynamic behavior of asphalt mixtures is critical to the engineers since it directly relates to the damage in asphalt mixtures. However, most of the current research of the freeze-thaw damage of asphalt mixtures is focused on the bulk body f...

  • Article
  • Open Access
1 Citations
1,959 Views
10 Pages

Use of X-ray Microscopy for Confirmation of Crystallinity Detection in Amorphous Formulations by Electrospray Laser Desorption Ionization Mass Spectrometry Imaging

  • Kelsey K. Ramp,
  • Noah R. Dierckman,
  • Margaret A. Sperry,
  • Matthew E. Reuter,
  • Yongan Tang,
  • Gregory K. Webster and
  • Patrick A. McVey

24 September 2023

The use of mass spectrometry imaging for crystallinity detection offers improved matrix selectivity and sensitivity over the techniques, such as X-ray microscopy and Raman spectrometry, that are traditionally used with this work. Crystallinity is obs...

  • Review
  • Open Access
11 Citations
16,664 Views
20 Pages

Diagnosing Lung Abnormalities Related to Heart Failure in Chest Radiogram, Lung Ultrasound and Thoracic Computed Tomography

  • Dominika Siwik,
  • Wojciech Apanasiewicz,
  • Małgorzata Żukowska,
  • Grzegorz Jaczewski and
  • Marta Dąbrowska

23 February 2023

Heart failure (HF) is a multidisciplinary disease affecting almost 1–2% of the adult population worldwide. Symptoms most frequently reported by patients suffering from HF include dyspnoea, cough or exercise intolerance, which is equally often o...

  • Article
  • Open Access
14 Citations
7,031 Views
17 Pages

Influence of Fracture Width on Sealability in High-Strength and Ultra-Low-Permeability Concrete in Seawater

  • Daisuke Fukuda,
  • Yoshitaka Nara,
  • Daisuke Hayashi,
  • Hideo Ogawa and
  • Katsuhiko Kaneko

25 June 2013

For cementitious composites and materials, the sealing of fractures can occur in water by the precipitation of calcium compounds. In this study, the sealing behavior in a macro-fractured high-strength and ultra-low-permeability concrete (HSULPC) spec...

  • Article
  • Open Access
16 Citations
3,727 Views
27 Pages

4 September 2020

In this work, which is part of a larger research program, a framework called “virtual data fusion” was developed to provide an automated and consistent crack detection method that allows for the cross-comparison of results from large quan...

  • Article
  • Open Access
421 Views
18 Pages

CT-Based Attenuation Correction Algorithm for Quantitative L-Shell X-Ray Fluorescence Imaging of Gold Nanoparticles in Murine Tumor Tissues

  • Marin Lohff,
  • Gerret Haroske,
  • Theresa Staufer,
  • Jan Scheunemann,
  • Florian Ziegler,
  • Jannis Haak,
  • Kazuya Kabayama,
  • Xuhao Huang,
  • Koichi Fukase and
  • Florian Grüner

16 December 2025

Background: Gold nanoparticles (GNPs) are widely used in nanomedicine as drug carriers, including in targeted radionuclide therapy where therapeutic radionuclides are bound to GNPs. Quantitative assessment of their biodistribution is essential. X-ray...

  • Article
  • Open Access
20 Citations
5,358 Views
16 Pages

3 July 2023

The performance of asphalt concrete (AC) mixtures depends highly on their internal structure and the interaction of the mixture components under different loading conditions. Imaging techniques provide effective tools that can assess the microstructu...

  • Article
  • Open Access
15 Citations
4,882 Views
21 Pages

Ant Colony-Based Hyperparameter Optimisation in Total Variation Reconstruction in X-ray Computed Tomography

  • Manasavee Lohvithee,
  • Wenjuan Sun,
  • Stephane Chretien and
  • Manuchehr Soleimani

15 January 2021

In this paper, a computer-aided training method for hyperparameter selection of limited data X-ray computed tomography (XCT) reconstruction was proposed. The proposed method employed the ant colony optimisation (ACO) approach to assist in hyperparame...

  • Article
  • Open Access
1 Citations
1,469 Views
15 Pages

24 November 2024

Computed tomography (CT) imaging using low-dose radiation effectively reduces radiation exposure; however, it introduces noise amplification in the resulting image. This study models an adaptive nonlocal total variation (NL-TV) algorithm that efficie...

  • Review
  • Open Access
8 Citations
9,523 Views
18 Pages

Bone age (BA) reflects skeletal maturity and is crucial in clinical and forensic contexts, particularly for growth assessment, adult height prediction, and managing conditions like short stature and precocious puberty, often using X-ray, MRI, CT, or...

  • Systematic Review
  • Open Access
33 Citations
5,854 Views
17 Pages

The Added Effect of Artificial Intelligence on Physicians’ Performance in Detecting Thoracic Pathologies on CT and Chest X-ray: A Systematic Review

  • Dana Li,
  • Lea Marie Pehrson,
  • Carsten Ammitzbøl Lauridsen,
  • Lea Tøttrup,
  • Marco Fraccaro,
  • Desmond Elliott,
  • Hubert Dariusz Zając,
  • Sune Darkner,
  • Jonathan Frederik Carlsen and
  • Michael Bachmann Nielsen

26 November 2021

Our systematic review investigated the additional effect of artificial intelligence-based devices on human observers when diagnosing and/or detecting thoracic pathologies using different diagnostic imaging modalities, such as chest X-ray and CT. Peer...

  • Article
  • Open Access
37 Citations
3,496 Views
13 Pages

16 May 2022

Freeze–thaw cycle is one of the main distresses of asphalt pavement, and the law of freeze–thaw damage has always been an important topic. In this paper, X-ray computed tomography (CT) of asphalt mixture before and after freezing and thaw...

  • Article
  • Open Access
8 Citations
2,704 Views
21 Pages

22 June 2022

In this paper, the mesoscale damage properties of concrete and mortar were studied experimentally under Brazilian disc splitting tensile tests combining X-ray computed tomography (CT) and digital image correlation (DIC) technology. Considering the fa...

  • Article
  • Open Access
1 Citations
1,643 Views
12 Pages

Plant roots influence various soil physical properties by altering the soil structure and pore configuration; however, a detailed understanding of these effects remains limited. In this study, we applied a relatively simple approach for segmenting pl...

  • Article
  • Open Access
3 Citations
3,436 Views
13 Pages

4D In-Situ Microscopy of Aerosol Filtration in a Wall Flow Filter

  • Matthew P. Jones,
  • Malte Storm,
  • Andrew P. E. York,
  • Timothy I. Hyde,
  • Gareth D. Hatton,
  • Alex G. Greenaway,
  • Sarah J. Haigh and
  • David S. Eastwood

12 December 2020

The transient nature of the internal pore structure of particulate wall flow filters, caused by the continuous deposition of particulate matter, makes studying their flow and filtration characteristics challenging. In this article we present a new me...

  • Proceeding Paper
  • Open Access
8 Citations
3,637 Views
8 Pages

A Hybrid Deep Learning Approach for COVID-19 Diagnosis via CT and X-ray Medical Images

  • Channabasava Chola,
  • Pramodha Mallikarjuna,
  • Abdullah Y. Muaad,
  • J. V. Bibal Benifa,
  • Jayappa Hanumanthappa and
  • Mugahed A. Al-antari

The COVID-19 pandemic has been a global health problem since December 2019. To date, the total number of confirmed cases, recoveries, and deaths has exponentially increased on a daily basis worldwide. In this paper, a hybrid deep learning approach is...

  • Article
  • Open Access
5 Citations
2,364 Views
16 Pages

10 October 2021

The deformation analysis of fractures is vital for advantageous development of oil and gas fields, especially the coalbed methane (CBM) reservoir, since the change of fracture parameters can be directly evaluated through fracture deformation analysis...

  • Article
  • Open Access
1 Citations
1,344 Views
19 Pages

Deformation-Failure Characteristics of Coal with Liquid CO2 Cryogenic-Freezing Process: An Experimental and Digital Study

  • Gaoming Wei,
  • Li Ma,
  • Hu Wen,
  • Xin Yi,
  • Jun Deng,
  • Shangming Liu,
  • Zhenbao Li and
  • Duo Zhang

23 August 2023

The aim of this paper is to analyze the deformation-failure degree and microstructure variations in coal under the cryogenic-freezing effect of liquid CO2. In this paper, X-ray CT scanning technology is adopted to measure the microscopic-morphologica...

  • Case Report
  • Open Access
1 Citations
2,554 Views
9 Pages

26 October 2022

Two case reports and an updated critical review on bilateral fractures of the femoral neck are presented. Bilateral fractures of the femoral neck have been investigated for at least 80 years and are treated as rare cases. The primary cause is usually...

  • Article
  • Open Access
1 Citations
2,019 Views
14 Pages

22 August 2024

X-ray CT imaging is an important three-dimensional non-destructive testing technique, which has been widely applied in various fields. However, segmenting image voxels as discrete material compositions may lose information below the voxel size. In th...

  • Article
  • Open Access
2 Citations
2,705 Views
11 Pages

15 December 2022

The purpose of this study was to develop a predictive model for estimating the rotation angle of the vertebral body on X-ray anteroposterior projection (AP) image by applying machine learning. This study is intended to replace internal/external rotat...

  • Article
  • Open Access
1 Citations
1,899 Views
17 Pages

9 March 2023

One of the crucial tasks for the planning of surgery of the iliosacral joint is placing an iliosacral screw with the goal of fixing broken parts of the pelvis. Tracking of proper screw trajectory is usually done in the preoperative phase by the acqui...

  • Article
  • Open Access
11 Citations
5,105 Views
18 Pages

A Hybrid 3D-2D Image Registration Framework for Pedicle Screw Trajectory Registration between Intraoperative X-ray Image and Preoperative CT Image

  • Roshan Ramakrishna Naik,
  • Anitha Hoblidar,
  • Shyamasunder N. Bhat,
  • Nishanth Ampar and
  • Raghuraj Kundangar

Pedicle screw insertion is considered a complex surgery among Orthopaedics surgeons. Exclusively to prevent postoperative complications associated with pedicle screw insertion, various types of image intensity registration-based navigation systems ha...

  • Article
  • Open Access
1 Citations
841 Views
17 Pages

12 September 2025

Rock porosity is a key parameter for quantifying fluid flow properties and predicting mechanical behaviour. Although X-ray CT imaging has been widely used to estimate porosity, the accuracy of such methods is still hindered by beam energy and mineral...

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