Results 101 to 110 of about 425,854 (315)

A hybrid 3-D reconstruction/registration algorithm for correction of head motion in emission tomography

open access: yes, 2002
Even with head restraint, small head movements can occur during data acquisition in emission tomography that are sufficiently large to result in detectable artifacts in the final reconstruction.
Hutton, BF   +4 more
core  

Imprint Cytology Improves Accuracy of Computed Tomography-Guided Percutaneous Transthoracic Needle Biopsy

open access: yes, 2009
The aim of the present study was to investigate whether imprint cytology can improve the diagnostic accuracy of computed tomography- guided transthoracic core biopsy.
CHANG, YEUN-CHUNG;YU, CHONG-JEN;LEE, WEN-JENG;KUO, SOW-HSONG;HSIAO, CHENG-HSIANG;JAN, I-SHIOW;HU, FU-CHANG;LIU, HON-MAN;CHAN, WING-KAI;YANG, PAN-CHYR   +1 more
core   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran   +6 more
wiley   +1 more source

On artefact reduction, segmentation and classification of 3D computed tomography imagery in baggage security screening [PDF]

open access: yes, 2014
This work considers novel image-processing and computer-vision techniques to advance the automated analysis of low-resolution, complex 3D volumetric Computed Tomography (CT) imagery obtained in the aviation-security-screening domain. Novel research is
Mouton, Andre
core  

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele   +2 more
wiley   +1 more source

Obesity: new insight into the anthropometric classification of fat distribution shown by computed tomography

open access: yes, 1985
Twenty eight women presenting for routine computed tomography had their waist, hip, and thigh circumferences measured. The ratio of the area of intra-abdominal fat to the area of subcutaneous fat shown in the computed tomogram taken at the umbilical ...
Ashwell, M., Cole, T.J., Dixon, A.K.
core  

Is there a role for fluorine 18 fluorodeoxyglucose-positron emission tomography and positron emission tomography/computed tomography in evaluating patients with mycobacteriosis? A systematic review [PDF]

open access: yes, 2011
This study was designed to review the emerging role of fluorine 18 fluorodeoxyglucose (18F-FDG)-positron emission tomography (PET) CT/computed tomography (PET/CT) in patients with ...
Bonomo, Lorenzo   +11 more
core   +1 more source

Influence of Si Content and Milling Duration on the Microstructure and Mechanical–Tribological Properties of AlCoCrFeNiSi High‐Entropy Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
Si‐doped AlCoCrFeNi high‐entropy alloys are synthesized by mechanical alloying to reveal the effect of Si content and milling time on phase evolution, microstructural refinement, and tribological behavior. A transition from FCC to BCC structure, significant grain refinement, and enhanced hardness and wear resistance are achieved, with the 4 at% Si ...
Mustafa Okumuş   +2 more
wiley   +1 more source

Damage investigation in CFRP composites using full-field measurement techniques: combination of digital image stereo-correlation, infrared thermography and X-ray tomography [PDF]

open access: yes, 2013
The present work is devoted to damaging process in carbon–fiber reinforced laminated composites. An original experimental approach combining three optical measurement techniques is presented.
Péronnet, Elodie   +6 more
core   +1 more source

Exploring Curvature Effects in Direct‐Written 3D Curved Hollow Magnetic Nanoshells

open access: yesAdvanced Functional Materials, EarlyView.
Fabricated by a hybrid FEBID/CVD method, 3D PtC/Co3Fe core–shell heterostructures with engineered curvature and shell thickness exhibit complex reversal modes with axially symmetric N'eel‐type domain walls. XMCD‐PEEM combined with full‐scale micromagnetic simulations reveal how curvature and thickness govern the domain wall energy landscape and shape ...
Oleksii M. Volkov   +10 more
wiley   +1 more source

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