Results 41 to 50 of about 1,371,529 (165)

Reducing the Kidney Uptake of High Contrast CXCR4 PET Imaging Agents via Linker Modifications

open access: yesPharmaceutics, 2022
Purpose: The C-X-C chemokine receptor 4 (CXCR4) is highly expressed in many subtypes of cancers, notably in several kidney-based malignancies. We synthesized, labeled, and assessed a series of radiotracers based on a previous high contrast PET imaging ...
Daniel Kwon   +5 more
doaj   +1 more source

High-contrast and high-resolution X-ray phase-contrast imaging based on betatron sources driven by a laser wakefield accelerator [PDF]

open access: yesMatter and Radiation at Extremes
X-ray phase-contrast imaging (XPCI) provides superior sensitivity for the diagnosis of low-Z materials compared with absorption-based techniques. Betatron radiation generated by laser wakefield accelerators, which offers high photon flux, ultra-short ...
Sijie Fan   +20 more
doaj   +1 more source

Ultrafast, high resolution, phase contrast imaging of impact response with synchrotron radiation

open access: yesAIP Advances, 2012
Understanding the dynamic response of materials at extreme conditions requires diagnostics that can provide real-time, in situ, spatially resolved measurements on the nanosecond timescale.
B. J. Jensen   +8 more
doaj   +1 more source

HIGH-RESOLUTION, HIGH-CONTRAST ACOUSTIC IMAGING

open access: yesLe Journal de Physique Colloques, 1972
In this paper we present two systems capable of high-resolution, high-contrast acoustic imaging. In the first system, the object is illuminated by two intersecting acoustic beams, the transmitted fields forming a standing-wave pattern modulated by the object's transmission properties.
Cunningham, J., Quate, C.
openaire   +1 more source

Precision Speckle Pattern Reconstruction for High-contrast Imaging

open access: yesThe Astronomical Journal
In high-contrast imaging, a large instrumental, technological, and algorithmic effort is made to reduce residual speckle noise and improve the detection capabilities.
Dotan Gazith, Barak Zackay
doaj   +1 more source

High-contrast imaging of Galactic Cepheids with VLT/SPHERE

open access: yesAstronomy & Astrophysics
Context. Classical Cepheids are key distance indicators and benchmarks for stellar evolution, yet most of them are members of binary or multiple systems.
Gallenne A.   +12 more
doaj   +1 more source

Real-Time Laser Speckle Imaging of Blood Flow with High Gray Level and High Resolution

open access: yesShanghai Jiaotong Daxue xuebao, 2023
Laser speckle contrast imaging (LSCI) is a large measurement ranging, real-time, high spatial resolution optical imaging method. Exisiting reserches show that the low gray level (8-bit) and low resolution (752×480 pixels) camera can effectively monitor ...
ZHANG Zelong, ZHANG Yingchao, WU Bo, DONG Wei, FAN Youben
doaj   +1 more source

Toward high contrast and high-resolution microscopic ghost imaging

open access: yesOptics Express, 2019
In this study, the influence of speckle size on contrast-to-noise ratio (CNR) and resolution is examined based on the object dimensions in the macroscopic and microscopic regimes. This research shows that for microscopic samples the conventional scaling laws are no longer effective and the CNR does not counter-propagate in the same manner as the ...
Zhe Sun   +2 more
openaire   +2 more sources

High resolution X-ray phase contrast imaging for non-destructive testing of composite materials

open access: yesResearch and Review Journal of Nondestructive Testing
X-ray imaging is widely used in non-destructive testing dedicated to industry, medical or security domain. In aircraft production, the aerospace industry increasingly integrates carbon fibre reinforced polymers (CFRP), which may develop defects from ...
Georges Giakoumakis   +2 more
doaj   +1 more source

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