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Detecting micro fractures: A comprehensive comparison of conventional and machine-learning based segmentation methods [article]

Dongwon Lee, Nikolaos Karadimitriou, Matthias Ruf, Holger Steeb
2022 arXiv   pre-print
Studying porous rock materials with X-Ray Computed Tomography (XRCT) has been established as a standard procedure for the non-destructive visualization of flow and transport in opaque porous media.  ...  In this study, based on a data-set produced by the successful visualization of a fracture network in Carrara marble with XRCT, we present the segmentation results from a number of segmentation methods.  ...  More specifically, lab-based micro-X-Ray Computed Tomography (µXRCT) offers the ability to visualize features on the pore-scale at micrometer resolution.  ... 
arXiv:2103.12821v2 fatcat:rsdklyl6irebrhdwkwdzzm2fty

Low cycle fatigue damage mechanism of the lightweight alloy Al2024

S. Khan, F. Wilde, F. Beckmann, J. Mosler
2012 International Journal of Fatigue  
The x-ray computed micro-tomography provides information on the internal structural features of a material by the measurements of the attenuation of an x-ray passing through the sample at different incidence  ...  Fortunately, the current synchrotron radiation facility at DESY in Hamburg enables x-ray computed tomography with a high spatial resolution down to less then 1 μm.  ...  The x-ray computed micro-tomography provides information on the internal structural features of a material by the measurements of the attenuation of an x-ray passing through the sample at different incidence  ... 
doi:10.1016/j.ijfatigue.2011.11.009 fatcat:su5bimuxzjhbvf3cp4ygexfdte

Three-dimensional analysis of cortical bone structure using X-ray micro-computed tomography

A.C. Jones, A.P. Sheppard, R.M. Sok, C.H. Arns, A. Limaye, H. Averdunk, A. Brandwood, A. Sakellariou, T.J. Senden, B.K. Milthorpe, M.A. Knackstedt
2004 Physica A: Statistical Mechanics and its Applications  
We demonstrate the capability of X-ray micro-computed tomography to image the micro-structure of human cortical bone.  ...  Both results are in agreement with traditional histomorphometric measurements. We show that at higher resolutions one can resolve the spatial distribution of lacunae in cortical bone.  ...  The potential of X-ray micro-computed tomography combined with direct measurement of morphological properties on 3D images is particularly promising.  ... 
doi:10.1016/j.physa.2004.03.046 fatcat:r6cucwn325ball7oy2uy7qz6te

Imaging in Latest Dentistry - A Review

Dr. Yesh Sharma, Dr. Jasmine Marwaha, Dr. Raju Ram Bishnoi, Ruchika Goyal, Dr. Anwesha Biswas
2019 International Journal of Innovative Research in Medical Science  
[10] Micro Computed Tomography High-resolution micro-computed tomography is an innovative technology with several applications in endodontic research and education.  ...  In cone-beam computed tomography (commonly abbreviated CBCT), the x-ray beam is conical.  ... 
doi:10.23958/ijirms/vol04-i12/805 fatcat:bvdgbm7n5bbjrjmqf2a2roshtq

Deep learning for extracting micro-fracture: Pixel-level detection by convolutional neural network

Yejin Kim, Seong Jun Ha, Tae sup Yun, J.S. McCartney, I. Tomac
2020 E3S Web of Conferences  
The recent development of three-dimensional X-ray computed tomography allows visualizing the fractures for further analysing the morphological features of fractures.  ...  In this study, we adopted an encoder-decoder network with a convolutional neural network (CNN) based on deep learning method for the fast and precise detection of micro-fractures.  ...  High-resolution X-ray computed tomography (CT) enables internal visualization using Xrays to characterize material components, thereby obtaining three-dimensional specimen images of materials including  ... 
doi:10.1051/e3sconf/202020503007 fatcat:a4s2kbblgrdotjo3d72qxrjeqm

Conception the Fluid Flow Behavior within Oil Reservoir Rock by Using Computed Tomography (CT) Scan

Amani J. Majeed, Falah A. Abood, Ahmed K. Alshara
2021 Journal of Mechanical Engineering Research  
The X-ray Computed Tomography (CT) scan has been used to convert the real fractured core to a dynamic domain.  ...  A comparison was made between the productivity index for fractured and non-fractured rock and the results explained that the presence of fracture can improve the productivity index to about 5.74%.  ...  Moreover, the X-ray Computed Tomography (CT) imaging helped to diagnosis the fracture within the rock with high resolution and the behavior of fluid within the fracture has been visualized in detail.  ... 
doi:10.30564/jmer.v4i2.3194 fatcat:ujo7njn3xffsppdjx7wccfrjna

Automatic detection of tooth cracks in optical coherence tomography images

Jun-Min Kim, Se-Ryong Kang, Won-Jin Yi
2017 Journal of Periodontal & Implant Science  
The reliability of the SS-OCT images was verified by comparing the crack lines with those detected using conventional methods.  ...  Other conventional methods for the detection of tooth cracks did not sense initial cracks with a width of less than 100 μm.  ...  Several radiographic methods are used in dental research, including intraoral X-ray imaging, cone-beam computed tomography (CBCT), and micro-computed tomography (micro-CT) [9] .  ... 
doi:10.5051/jpis.2017.47.1.41 pmid:28261523 pmcid:PMC5332334 fatcat:6qykoa5hzvazngcoa5dgoylcli

Conception_the_Fluid_Flow_Behavior_withi.pdf

Dr. Amani Majeed
2022 figshare.com  
As for the other side, a simulation of a real reservoir rock belonging to theA l-Nour field in Iraq / Misan was madeT. he X-ray Computed Tomography (CT) scan has been used to convert the real fractured  ...  A comparison was made between the productivity index for fractured and non-fractured rock and the results explained that the presence of fracture can improve the productivity index to about 5.74%.  ...  Moreover, the X-ray Computed Tomography (CT) imaging helped to diagnosis the fracture within the rock with high resolution and the behavior of fluid within the fracture has been visualized in detail.  ... 
doi:10.6084/m9.figshare.19725667.v1 fatcat:gqt5mnbo3zgnthufkijdqnhmh4

Characterization of Coloured Gemstones by X-ray Micro Computed Tomography

René Heyn, Abraham Rozendaal, Anton Du Plessis, Carene Mouton
2021 Minerals  
X-ray micro computed tomography (micro-CT or μCT) is proposed as a relatively low cost, physically non-destructive and complementary method to detect and quantify clarity enhancement and also to provide  ...  Micro-CT scans allowed fracture detection, their distribution and calculation of filler volume as well as 3D mapping of inclusions, surface and internal imperfections and artificially induced modifications  ...  Acknowledgments: The CT scans were done at Stellenbosch University's CT Scanner Facility, an open access laboratory providing non-destructive X-ray computed tomography and a high performance image analysis  ... 
doi:10.3390/min11020178 fatcat:z5t5i65mfngatfyakmhhtg7sea

Recent progress in X-ray CT as a geosciences tool

V. Cnudde, B. Masschaele, M. Dierick, J. Vlassenbroeck, L. Van Hoorebeke, P. Jacobs
2006 Applied Geochemistry  
For years X-ray computerized tomography has been widely used as a medical diagnostical tool. This non-destructive technique soon turned out to be very practical in rock material research.  ...  Like every technique some restrictions occur, but X-ray CT turns out to be an emerging non-destructive analytical technique with a lot of possibilities in material research.  ...  Micro-CT Medical scanners are not suited to study objects with high resolution due to the ir large X-ray spot.  ... 
doi:10.1016/j.apgeochem.2006.02.010 fatcat:aog6zs4gdnf4zie2uxbminrmra

Role of Computed Tomography Scan in Dental Trauma: A Cross-Sectional Study

Feng Li, Jun Li, Deming Zhang, Feng Wu
2018 Dose-Response  
Methods: A total of 250 patients with dental complaints were subjected to intraoral radiography, multidetector helical computed tomography (MDHCT), and limited cone beam computed tomography (LCBCT).  ...  The suspected tooth was extracted, visually inspected, and subjected to microcomputed tomography (micro-CT).  ...  Declaration of Conflicting Interests The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.  ... 
doi:10.1177/1559325818789837 pmid:30150907 pmcid:PMC6108019 fatcat:kvrechbmffap5eoeioiq23mvwa

A perspective on the diagnosis of cracked tooth: imaging modalities evolve to AI-based analysis

Juncheng Guo, Yuyan Wu, Lizhi Chen, Shangbin Long, Daqi Chen, Haibing Ouyang, Chunliang Zhang, Yadong Tang, Wenlong Wang
2022 BioMedical Engineering OnLine  
Current clinical diagnostical approaches for cracked tooth have been widely investigated based on X-rays, optical light, ultrasound wave, etc.  ...  What's more, AI-based crack detection and classification methods, especially the convolutional neural network (CNN)-based algorithms, including image classification (AlexNet), object detection (YOLO, Faster-RCNN  ...  Micro-computed tomography Micro-computed tomography (abbreviated as micro-CT or μCT) has provided a breakthrough in diagnostic medical imaging.  ... 
doi:10.1186/s12938-022-01008-4 pmid:35706023 pmcid:PMC9202175 fatcat:kvxfktusvzctfnpsprl7jh6k2e

Modern Diagnostic Imaging Technique Applications and Risk Factors in the Medical Field: A Review

Shah Hussain, Iqra Mubeen, Niamat Ullah, Syed Shahab Ud Din Shah, Bakhtawar Abduljalil Khan, Muhammad Zahoor, Riaz Ullah, Farhat Ali Khan, Mujeeb A. Sultan, Chen Li
2022 BioMed Research International  
There are many medical imaging techniques used for this purpose such as X-ray, computed tomography (CT), positron emission tomography (PET), magnetic resonance imaging (MRI), single-photon emission computed  ...  Advance medical imaging modalities such as PET/CT hybrid, three-dimensional ultrasound computed tomography (3D USCT), and simultaneous PET/MRI give high resolution, better reliability, and safety to diagnose  ...  Radiologists gave names to X-ray basis as "X-rays" or "plane film" used for diagnosing bone fractures and chest abnormalities.  ... 
doi:10.1155/2022/5164970 pmid:35707373 pmcid:PMC9192206 fatcat:zkmv55ll3rdkvk2wvej44ickiy

Three-dimensional, non-destructive visualization of vertical root fractures using flat panel volume detector computer tomography: an ex vivoin vitro case report

C. Hannig, C. Dullin, M. Hulsmann, G. Heidrich
2005 International Endodontic Journal  
Aim To detect and to visualize radiographically vertical root fractures in extracted teeth with a prototype of a novel, high resolution, three-dimensional flat panel volume detector computer tomograph  ...  Three-dimensional, non-destructive visualization of vertical root fractures using flat panel volume detector computer tomography: an ex vivo in vitro case report.  ...  Further studies on detection of vertical root fractures have been performed with tuned aperture computer tomography (TACT).  ... 
doi:10.1111/j.1365-2591.2005.01033.x pmid:16343118 fatcat:bbp34d7bafevxgr5ut2j5oljcu

X-ray dynamic observation of the evolution of the fracture process zone in a quasi-brittle specimen

Ivana Kumpova, Tomas Fila, Daniel Vavrik, Zbynek Kersner
2015 Journal of Instrumentation  
Therefore, X-ray dynamic defectoscopy and computed tomography were employed as tools for an extended investigation of process zone evolution.  ...  The aim of this work is the evaluation of the fracture process zone while loading a quasi-brittle concrete compound.  ...  The tomographic data were acquired and reconstructed using the Fraunhofer Volex 6 software developed by the Fraunhofer Development Center X-ray Technology EZRT in Fürth, Germany.  ... 
doi:10.1088/1748-0221/10/08/c08004 fatcat:vufzsxs3d5hg7jtr6cwonsznbm
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