Buscar
Mostrando ítems 1-10 de 457
First experiments on diffraction-enhanced imaging at LNLS
(Blackwell MunksgaardCopenhagenDinamarca, 2003)
Ultrasonic Image Compounding Method Based on the Instantaneous Phase Image
(Ieee, 2016-01-01)
The quality of ultrasonic images depends on array configuration, image beamforming algorithm, propagation modes and signal-to-noise ratio. Some alternatives to improve image quality are related to the use of coherence ...
Phase-only optical encryption based on the zeroth-order phase-contrast technique
(SPIE-SOC PHOTOPTICAL INSTRUMENTATION ENGINEERS, 2009)
A phase-only encryption/decryption scheme with the readout based on the zeroth-order phase-contrast technique (ZOPCT), without the use of a phase-changing plate on the Fourier plane of an optical system based on the 4f ...
Multiple imaging radiography at LNLS
(ELSEVIER SCIENCE BVAMSTERDAM, 2008)
An analyzer-based X-ray phase-contrast imaging (ABI) setup has been mounted at the Brazilian Synchrotron Light Laboratory (LNLS) for multiple imaging radiography (MIR) purposes. The algorithm employed for treating the MIR ...
Optimal Dual-VENC Unwrapping in Phase-Contrast MRI
(Institute of Electrical and Electronics Engineers Inc., 2019)
© 2018 IEEE. Dual-VENC strategies have been proposed to improve the velocity-to-noise ratio in phase-contrast MRI. However, they are based on aliasing-free high-VENC data. The aim of this paper is to propose a dual-VENC ...
Nonlinear Image Blending for Dual-Energy MDCT of the Abdomen: Can Image Quality Be Preserved If the Contrast Medium Dose Is Reduced?
(2014)
OBJECTIVE. The objective of this study was to compare the image quality of a dual-
energy nonlinear image blending technique at reduced load of contrast medium with a simulated 120-kVp linear blending technique ...