Results 1 to 10 of about 93,745 (160)

An Acousto-Optical Sensor with High Angular Resolution [PDF]

Sensors, 2012
The paper introduces a new laser interferometry-based sensor for diagnosis of random media by means of high accuracy angle measurements and describes the results of its development and testing.
Igor Lukin, Gennady Kaloshin
doaj   +5 more sources

Fast diffusion imaging with high angular resolution. [PDF]

Magn Reson Med, 2017
PurposeHigh angular resolution diffusion imaging (HARDI) is a well‐established method to help reveal the architecture of nerve bundles, but long scan times and geometric distortions inherent to echo planar imaging (EPI) have limited its integration into clinical protocols.MethodsA fast imaging method is proposed here that combines accelerated multishot
Chao TC, Chiou JG, Maier SE, Madore B.
europepmc   +4 more sources

Diffusion tractography of kidney by high angular resolution diffusion imaging [PDF]

Magnetic Resonance Letters
Diffusion magnetic resonance imaging (MRI) has been utilized to probe the renal microstructures but investigating the three-dimensional (3D) tubular network still presents significant challenges due to the complicated architecture of kidney.
Surendra Maharjan, Jie Chen, Adrienne Gaughan, Neal X. Chen, Nian Wang   +4 more
doaj   +2 more sources

Development of the high angular resolution 360° LiDAR based on scanning MEMS mirror [PDF]

Scientific Reports, 2023
Light detection and ranging (LiDAR) using various operational principles has been applied in many fields, e.g., robotics navigation, autonomous vehicles, unmanned aerial flyers, land surveying, etc. The multichannel LiDAR system is of great importance in
Donghai Yang, Yifan Liu, Qingjiu Chen, Meng Chen, Shaodong Zhan, Nim-kwan Cheung, Ho-Yin Chan, Zhidong Wang, Wen Jung Li   +8 more
doaj   +2 more sources

High angular resolution diffusion-weighted imaging in mild traumatic brain injury [PDF]

NeuroImage: Clinical, 2017
We sought to investigate white matter abnormalities in mild traumatic brain injury (mTBI) using diffusion-weighted magnetic resonance imaging (DW-MRI). We applied a global approach based on tract-based spatial statistics skeleton as well as constrained ...
Mehrbod Mohammadian, Timo Roine, Jussi Hirvonen, Timo Kurki, Henna Ala-Seppälä, Janek Frantzén, Ari Katila, Anna Kyllönen, Henna-Riikka Maanpää, Jussi Posti, Riikka Takala, Jussi Tallus, Olli Tenovuo   +12 more
doaj   +2 more sources

Texture tomography with high angular resolution utilizing sparsity. [PDF]

J Appl Crystallogr
We demonstrate an approach to the reconstruction of scanning probe X-ray diffraction tomography data with anisotropic polycrystalline samples. The method involves reconstructing a voxel map containing an orientation distribution function in each voxel of a bulk 3D sample.
Carlsen M, Malamud F, Modregger P, Wildeis A, Hartmann M, Brandt R, Menzel A, Liebi M.   +7 more
europepmc   +7 more sources

Converting Multi-shell and Diffusion Spectrum Imaging to High Angular Resolution Diffusion Imaging [PDF]

Frontiers in Neuroscience, 2016
Multi-shell and diffusion spectrum imaging (DSI) are becoming increasingly popular methods of acquiring diffusion MRI data in a research context. However, single-shell acquisitions, such as diffusion tensor imaging (DTI) and high angular resolution ...
Fang-Cheng Yeh, Timothy D Verstynen
doaj   +2 more sources

Directionally factorized light field reconstruction with cross-epipolar and spatial modeling [PDF]

Scientific Reports
High-angular-resolution light fields (LFs) are essential for advanced imaging tasks such as post-capture refocusing, depth estimation, and virtual reality.
Ahmed Salem, Ebrahem Elkady, Hatem Ibrahem, Jae-Won Suh, Hyun-Soo Kang   +4 more
doaj   +2 more sources

Investigating close binary supermassive black holes at high angular resolution [PDF]

Serbian Astronomical Journal, 2021
Gravitational waves (GW) in the nano-Hz domain are expected to be radiated by close-binaries of supermassive black holes (CB-SMBHs; components bound in a Keplerian binary at mutual distance less than ~ 0.1 pc), which are relicts of galaxy ...
Kovačević A.
doaj   +1 more source

High-angular-resolution interferometric backscatter meter

Optics Letters, 2022
Backscatter limits many interferometric measurements, including gravitational wave detectors, by creating spurious interference. We describe an experimental method to directly and quantitatively measure the backscatter interference. We derive and verify experimentally a relation between backscatter interference, beam radius, and the scattering sample ...
M. Wąs, E. Polini
openaire   +4 more sources