Results 31 to 40 of about 6,221,198 (343)

Imaging a single atom in a time-of-flight experiment [PDF]

open access: yes, 2010
We perform fluorescence imaging of a single 87Rb atom after its release from an optical dipole trap. The time-of-flight expansion of the atomic spatial density distribution is observed by accumulating many single atom images.
A Browaeys   +7 more
core   +3 more sources

Image intensifier distortion correction for fluoroscopic RSA: the need for independent accuracy assessment

open access: yesJournal of Applied Clinical Medical Physics, 2012
Fluoroscopic images suffer from multiple modes of image distortion. Therefore, the purpose of this study was to compare the effects of correction using a range of two‐dimensional polynomials and a global approach.
A. Kedgley, Anne-Marie V Fox, T. Jenkyn
semanticscholar   +1 more source

Radiograms Obtained during Anterior Cervical Decompression and Fusion Can Mislead Surgeons into Performing Surgery at the Wrong Level

open access: yesCase Reports in Orthopedics, 2014
A 68-year-old woman who suffered from C5 nerve palsy because of a C4-5 disc herniation was referred to our hospital. We conducted anterior cervical decompression and fusion (ACDF) at the C4-5 level.
Chikato Mannoji   +7 more
doaj   +1 more source

Long-Term Continuous Double Station Observation of Faint Meteor Showers

open access: yesSensors, 2016
Meteor detection and analysis is an essential topic in the field of astronomy. In this paper, a high-sensitivity and high-time-resolution imaging device for the detection of faint meteoric events is presented. The instrument is based on a fast CCD camera
Stanislav Vítek   +3 more
doaj   +1 more source

Bone alignment after minimally invasive plate osteosynthesis of the tibia in dogs

open access: yesCiência Rural, 2021
: This study assessed radiographically changes in tibial alignment in the frontal and sagittal planes in dogs that underwent minimally invasive plate osteosynthesis (MIPO) without the aid of image intensifiers.
Jose Sergio Costa Junior   +5 more
doaj   +1 more source

Improved Color Mapping Methods for Multiband Nighttime Image Fusion

open access: yesJournal of Imaging, 2017
Previously, we presented two color mapping methods for the application of daytime colors to fused nighttime (e.g., intensified and longwave infrared or thermal (LWIR)) imagery.
Maarten A. Hogervorst, Alexander Toet
doaj   +1 more source

A fast Maximum Likelihood method for improving AMCW lidar precision using waveform shape [PDF]

open access: yes, 2009
Amplitude Modulated Continuous Wave imaging lidar systems use the time-of-flight principle to determine the range to objects in a scene. Typical systems use modulated illumination of a scene and a modulated sensor or image intensifier.
Cree, Michael J.   +3 more
core   +2 more sources

Prototype for SONTRAC: a scintillating plastic fiber detector for solar neutron spectroscopy [PDF]

open access: yes, 1997
We report the scientific motivation for and performance measurements of a prototype detector system for SONTRAC, a solar neutron tracking experiment designed to study high- energy solar flare processes. The full SONTRAC instrument will measure the energy
Baltgalvis, Janis   +6 more
core   +2 more sources

Whole-body radiation exposure in Trauma and Orthopaedic surgery

open access: yesBone & Joint Open, 2022
AimsThe use of fluoroscopy in orthopaedic surgery creates risk of radiation exposure to surgeons. Appropriate personal protective equipment (PPE) can help mitigate this.
Robert J. Hurley   +5 more
doaj   +1 more source

Design and construction of a configurable full-field range imaging system for mobile robotic applications [PDF]

open access: yes, 2011
Mobile robotic devices rely critically on extrospection sensors to determine the range to objects in the robot’s operating environment. This provides the robot with the ability both to navigate safely around obstacles and to map its environment and hence
Carnegie, Dale A.   +5 more
core   +1 more source

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