Results 1 to 10 of about 2,176,171 (163)

Application of Improved b-Value and Clustering Analysis for Structural Integrity Assessment of CFRP Specimen under Tensile Loading [PDF]

Archives of Metallurgy and Materials, 2023
In the present study, the evolution of different failure mechanisms in carbon fiber reinforced polymer composites is being investigated using acoustic emission technique, unsupervised clustering technique and improved b-value analysis.
M. Šofer, P. Kwiatoń, P. Pavlíček
doaj   +3 more sources

Synthesizing High b-Value Diffusion-Weighted Imaging of Gastric Cancer Using an Improved Vision Transformer CycleGAN

Bioengineering
Background: Diffusion-weighted imaging (DWI), a pivotal component of multiparametric magnetic resonance imaging (mpMRI), plays a pivotal role in the detection, diagnosis, and evaluation of gastric cancer.
Can Hu, Congchao Bian, Ning Cao, Han Zhou, Bin Guo   +4 more
doaj   +3 more sources

High-Resolution, High b-Value Computed Diffusion-Weighted Imaging Improves Detection of Pancreatic Ductal Adenocarcinoma [PDF]

Cancers, 2022
Background: Our purpose was to investigate the potential of high-resolution, high b-value computed DWI (cDWI) in pancreatic ductal adenocarcinoma (PDAC) detection. Materials and Methods: We retrospectively enrolled 44 patients with confirmed PDAC. Respiratory-triggered, diffusion-weighted, single-shot echo-planar imaging (ss-EPI) with both conventional
Felix N. Harder, Eva Jung, Sean McTavish, Anh Tu Van, Kilian Weiss, Sebastian Ziegelmayer, Joshua Gawlitza, Philip Gouder, Omar Kamal, Marcus R. Makowski, Fabian K. Lohöfer, Dimitrios C. Karampinos, Rickmer F. Braren   +12 more
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Egg crack image detection method based on improved grasshopper optimization algorithm and canny operator

Shipin yu jixie, 2022
Objective: In order to improve the detection effect of egg linear and reticular cracks. Methods: As the low convergence efficiency of Grasshopper optimization algorithm （GOA） in solving high-dimensional complex optimization problems, an improved fuzzy c ...
TU Wei-hu, CAI Ling-xia, LI Xue-jun
doaj   +1 more source

Improved in-vivo cardiac DTI using optimal b-values [PDF]

Journal of Cardiovascular Magnetic Resonance, 2014
Background There has been much recent interest in the microstructural information available using cardiac diffusion tensor imaging (cDTI)[1-3]. cDTI measures signal loss between a reference (b0) and a diffusion weighted image. The signal loss is caused by both diffusion and other sources of intravoxel incoherent motion, such as microvascular perfusion.
Scott, Andrew D, Ferreira, Pedro, Nielles-Vallespin, Sonia, McGill, Laura-Ann, Kilner, Philip J, Pennell, Dudley J, Firmin, David   +6 more
openaire   +1 more source

Damage evolution in marble under uniaxial compression monitored by Pressure Stimulated Currents and Acoustic Emissions

Fracture and Structural Integrity, 2019
The spatiotemporal evolution of damage in marble speci¬mens under uniaxial compression is monitored using Pressure Stimulated Currents (PSCs) and Acoustic Emissions (AEs). The novelty of the study is the use of an integrated grid of sensors (instead of a
Ilias Stavrakas, Stavros K. Kourkoulis, Dimos Triantis   +2 more
doaj   +3 more sources

Research on tomato maturity detection method based on improved YOLOv4 model

Shipin yu jixie, 2023
Objective: To solve the problems of low detection accuracy and large number of model parameters in existing tomato maturity detection methods. Methods: Based on the tomato image acquisition system, an improved YOLOv4 model was proposed for automatic ...
LU Jinrui, FU Yan, NI Meiyu, CAO Weigang, DU Zitao   +4 more
doaj   +1 more source

Computed high-b-value high-resolution DWI improves solid lesion detection in IPMN of the pancreas

European Radiology, 2023
Abstract Objectives To examine the effect of high-b-value computed diffusion-weighted imaging (cDWI) on solid lesion detection and classification in pancreatic intraductal papillary mucinous neoplasm (IPMN), using endoscopic ultrasound (EUS) and histopathology as a standard of reference ...
Harder, Felix N., Jung, Eva, Weiss, Kilian, Graf, Markus M., Kamal, Omar, McTavish, Sean, Van, Anh T., Demir, Ihsan E., Friess, Helmut, Phillip, Veit, Schmid, Roland M., Lohöfer, Fabian K., Kaissis, Georgios A., Makowski, Marcus R., Karampinos, Dimitrios C., Braren, Rickmer F.   +15 more
openaire   +2 more sources

Improved Detection of Heat Stroke-Induced Brain Injury by High B-Value Diffusion-Weighted Imaging [PDF]

Journal of Computer Assisted Tomography, 2011
We report a case of heat stroke in which detection of brain injury was improved by high b-value diffusion-weighted imaging (DWI). High b-value DWI revealed moderate to marked hyperintensity at/around bilateral dentate nuclei and part of thalami. Apparent diffusion coefficient maps revealed apparent diffusion coefficient decrease of the dentate lesions.
Kobayashi, Kentaro, Tha, Khin Khin, Terae, Satoshi, Iijima, Yuki, Katabami, Kenichi, Minami, Yosuke, Uegaki, Shinji, Gando, Satoshi, Shirato, Hiroki   +8 more
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Multiple b-values improve discrimination of cortical gray matter regions using diffusion MRI: an experimental validation with a data-driven approach [PDF]

Magnetic Resonance Materials in Physics, Biology and Medicine, 2021
Abstract Objective To investigate whether varied or repeated b-values provide better diffusion MRI data for discriminating cortical areas with a data-driven approach. Methods Data were acquired from three volunteers at 1.5T with b-values of 800, 1400, 2000 s/mm2 along 64 ...
Ganepola, Tara, Lee, Yoojin, Alexander, Daniel C, Sereno, Martin I, Nagy, Zoltan   +4 more
openaire   +5 more sources