Results 31 to 40 of about 15,851,959 (333)

Image Synthesis in Multi-Contrast MRI With Conditional Generative Adversarial Networks [PDF]

open access: yesIEEE Transactions on Medical Imaging, 2018
Acquiring images of the same anatomy with multiple different contrasts increases the diversity of diagnostic information available in an MR exam. Yet, the scan time limitations may prohibit the acquisition of certain contrasts, and some contrasts may be ...
S. Dar   +5 more
semanticscholar   +1 more source

Molecular Contrast Optical Coherence Tomography: A Review [PDF]

open access: yes, 2004
This article reviews the current state of research on the use of molecular contrast agents in optical coherence tomography (OCT) imaging techniques. After a brief discussion of the basic principle of OCT and the importance of incorporating molecular ...
Yang, Changhuei
core   +1 more source

Deep Contrast Learning for Salient Object Detection [PDF]

open access: yesComputer Vision and Pattern Recognition, 2016
Salient object detection has recently witnessed substantial progress due to powerful features extracted using deep convolutional neural networks (CNNs). However, existing CNN-based methods operate at the patch level instead of the pixel level.
Guanbin Li, Yizhou Yu
semanticscholar   +1 more source

A Comparative Study of Antegrade Air Pyelogram and Retrograde Air Pyelogram for Initial Puncture Access during Percutaneous Nephrolithotomy [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2017
Introduction: Access into the collecting system is considered to be the most critical step for Percutaneous Nephrolithotomy (PCNL). Aim: The present study provides a comparative view into antegrade air pyelography and retrograde air pyelography ...
Dharmendra K. Jangid   +4 more
doaj   +1 more source

Contrast in Multipath Interference and Quantum Coherence [PDF]

open access: yes, 2015
We develop a rigorous connection between statistical properties of an interference pattern and the coherence properties of the underlying quantum state.
Mintert, Florian   +2 more
core   +1 more source

Crystal structure of diethyl 3,3′-[(2-fluorophenyl)methylidene]bis(1H-indole-2-carboxylate)

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
In the title compound, C29H25FN2O4, the mean planes of the two indole ring systems (r.m.s. deviations = 0.1392 and 0.0115 Å) are approximately perpendicular to one another, subtending a dihedral angle of 86.0 (5)°; the benzene ring is twisted with ...
Xin-Hua Lu   +4 more
doaj   +1 more source

Comprehensive phenotyping revealed transient startle response reduction and histopathological gadolinium localization to perineuronal nets after gadodiamide administration in rats

open access: yesScientific Reports, 2020
Gadolinium based contrast agents (GBCAs) are widely used in clinical MRI since the mid-1980s. Recently, concerns have been raised that trace amounts of Gadolinium (Gd), detected in brains even long time after GBCA application, may cause yet unrecognized ...
Johanna Habermeyer   +14 more
doaj   +1 more source

The effects of surround contrast on contrast thresholds, perceived contrast and contrast discrimination

open access: yesVision Research, 1998
Perceived contrast, contrast detection thresholds and contrast discrimination thresholds were measured in the presence and absence of surrounding patterns of a similar spatio-temporal makeup. In the foveal retina we found that the perceived contrast of the central pattern was reduced by the presence of the contrast surrounds with the effect being ...
Snowden, Robert J, Hammett, Stephen T
openaire   +2 more sources

Contrast-enhanced ultrasonography in hepatosplenic sarcoidosis [PDF]

open access: yes, 2011
We report a case of a 38-year-old woman with atypical pain in the left lower hemi-abdomen. On abdominal B-mode ultrasonography the liver was normal; the spleen showed multiple subcentimetric hypoechoic nodules.
Afschrift, Marcel   +5 more
core   +2 more sources

Optimization of Iron Oxide Tracer Synthesis for Magnetic Particle Imaging

open access: yesNanomaterials, 2018
The optimization of iron oxide nanoparticles as tracers for magnetic particle imaging (MPI) alongside the development of data acquisition equipment and image reconstruction techniques is crucial for the required improvements in image resolution and ...
Sabina Ziemian   +5 more
doaj   +1 more source

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