Objective evidence for the use of polylactic acid implants in HIV-associated facial lipoatrophy using three-dimensional surface laser scanning and psychological assessment

2009 ◽  
Vol 62 (12) ◽  
pp. 1627-1635 ◽  
Author(s):  
J. Ong ◽  
A. Clarke ◽  
P. White ◽  
M.A. Johnson ◽  
S. Withey ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Psychological Assessment ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Objective Evidence ◽  
Facial Lipoatrophy ◽  
Surface Laser ◽  
Dimensional Surface

Validation of phalanx bone three-dimensional surface segmentation from computed tomography images using laser scanning

2007 ◽  
Vol 37 (1) ◽  
pp. 35-42 ◽  
Author(s):  
Nicole A. DeVries ◽  
Esther E. Gassman ◽  
Nicole A. Kallemeyn ◽  
Kiran H. Shivanna ◽  
Vincent A. Magnotta ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Computed Tomography Images ◽  
Surface Segmentation ◽  
Dimensional Surface

scholarly journals BODY-MASS ESTIMATION IN PALEONTOLOGY: A REVIEW OF VOLUMETRIC TECHNIQUES

2016 ◽  
Vol 22 ◽  
pp. 133-156 ◽  
Author(s):  
Charlotte A. Brassey
Keyword(s):  
Body Mass ◽  
Laser Scanning ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
The Body ◽  
Estimation Methods ◽  
Mass Estimation ◽  
Surface Laser ◽  
Body Mass Estimation ◽  
Future Work

AbstractBody mass is a key parameter for understanding the physiology, biomechanics, and ecology of an organism. Within paleontology, body mass is a fundamental prerequisite for many studies considering body-size evolution, survivorship patterns, and the occurrence of dwarfism and gigantism. The conventional method for estimating fossil body mass relies on allometric scaling relationships derived from skeletal metrics of extant taxa, but the recent application of three-dimensional imaging techniques to paleontology (e.g., surface laser scanning, computed tomography, and photogrammetry) has allowed for the rapid digitization of fossil specimens. Volumetric body-mass estimation methods based on whole articulated skeletons are therefore becoming increasingly popular. Volume-based approaches offer several advantages, including the ability to reconstruct body-mass distribution around the body, and their relative insensitivity to particularly robust or gracile elements, i.e., the so-called ‘one bone effect.’ Yet their application to the fossil record will always be limited by the paucity of well-preserved specimens. Furthermore, uncertainties with regards to skeletal articulation, body density, and soft-tissue distribution must be acknowledged and their effects quantified. Future work should focus on extant taxa to improve our understanding of body composition and increase confidence in volumetric model input parameters.

scholarly journals The Use of Surface Laser Scanning for Creation of a Three-dimensional Digital Model of Monument

2015 ◽  
Vol 100 ◽  
pp. 1625-1633 ◽  
Author(s):  
Irina Kuznetsova ◽  
Darya Kuznetsova ◽  
Xeniya Rakova
Keyword(s):  
Laser Scanning ◽  
Three Dimensional ◽  
Digital Model ◽  
Surface Laser

scholarly journals EVALUATING MOBILE LASER SCANNING FOR LANDSLIDE MONITORING

2018 ◽  
Vol XLII-3/W4 ◽  
pp. 211-219
Author(s):  
N. A. Fuad ◽  
A. R. Yusoff ◽  
M. P. M. Zam ◽  
A. Aspuri ◽  
M. F. Salleh ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Human Life ◽  
Three Dimensional ◽  
Landslide Monitoring ◽  
Landslide Area ◽  
Project Area ◽  
Deviation Analysis ◽  
Gps Survey ◽  
Surface Deviation ◽  
Dimensional Surface

<p><strong>Abstract.</strong> Landslide is one of the natural disasters that give a huge impact to human life and social-economic development. Landslide needs to be monitored periodically in order to avoid loss of human life and damages of properties. Various methods have been used for monitoring landslide. This aim of the research is to evaluate the potential of mobile laser scanning technique for monitoring of landslide area. The objectives of the research are to acquire three-dimensional surface data of landslide area in different epochs and to analyze the movement of the landslide area using three-dimensional surface deviation and ground surveying techniques. The methodology begins with the GPS survey for the establishment of ground control points for the project area. The total station survey was then carried out to measure the three-dimensional coordinates of twenty well distributed targets located at the project area. The data collection phase was then continuing with the mobile laser scanning survey. The processing of the two epochs data acquired from both techniques was then carried out simultaneously and the methodology concluded with the output comparison analysis for the movement detection of the land slip. The finding shows that the mobile laser scanning provides fast and accurate data acquisition technique of the landslide surface. The surface deviation analysis of the two epochs laser scanning data was capable to detect the movement occurred in the project area. The results were successfully evaluated using the changes of the three-dimensional coordinates of the targets from the two epoch’s ground surveying data.</p>

Surface Morphologies of Sealed Film on Anodized Al Alloy

2011 ◽  
Vol 239-242 ◽  
pp. 2034-2037 ◽  
Author(s):  
Qi Zhou ◽  
Chun Lin He ◽  
Qing Kui Cai ◽  
Ping Zhao
Keyword(s):  
Laser Scanning ◽  
Three Dimensional ◽  
Boiling Water ◽  
Spherical Particles ◽  
Al Alloy ◽  
Two Dimensional ◽  
Anodized Aluminum ◽  
Sodium Dichromate ◽  
Surface Morphologies ◽  
Dimensional Surface

Surface morphologies of sealed films on anodized aluminum alloy extraordinarily affect on their corrosion resistance. Two-dimensional surface morphologies and three-dimensional surface morphologies of sol sealing, sodium dichromate sealing, boiling water sealing and unsealed films were obtained by OLS3100 laser scanning confocal microscope (LSCM). The three-dimensional surface morphologies show that the amounts of pores are greatly reduced when anodized aluminum 2024 are sealed by these methods. Surface roughness of sealed anodized aluminum 2024 films is increased comparing with the unsealed films, especially the boiling water sealing film. The results of two-dimensional surface morphologies show that unsealed films have plenty of spherical particles; there are raised blocks on sol film; there are much round or chrysalis cavities inside sodium dichromate sealing and boiling water sealing film. Especially there are the most and the deepest cavities with the largest diameter on the boiling water sealing film.

Laser Scanning Confocal Microscopy and Three-Dimesnsional Reconstruction of the Mitotic Spindles of Unequally Dividing Embryonic Cells

1990 ◽  
Vol 48 (3) ◽  
pp. 166-167
Author(s):  
J. Holy ◽  
G. Schatten
Keyword(s):  
Confocal Microscopy ◽  
Mitotic Spindle ◽  
Laser Scanning ◽  
Three Dimensional ◽  
Laser Scanning Confocal Microscopy ◽  
Two Dimensions ◽  
Embryonic Cells ◽  
Mitotic Spindles ◽  
Cleavage Division ◽  
Scanning Confocal Microscopy

One of the classic limitations of light microscopy has been the fact that three dimensional biological events could only be visualized in two dimensions. Recently, this shortcoming has been overcome by combining the technologies of laser scanning confocal microscopy (LSCM) and computer processing of microscopical data by volume rendering methods. We have employed these techniques to examine morphogenetic events characterizing early development of sea urchin embryos. Specifically, the fourth cleavage division was examined because it is at this point that the first morphological signs of cell differentiation appear, manifested in the production of macromeres and micromeres by unequally dividing vegetal blastomeres.The mitotic spindle within vegetal blastomeres undergoing unequal cleavage are highly polarized and develop specialized, flattened asters toward the micromere pole. In order to reconstruct the three-dimensional features of these spindles, both isolated spindles and intact, extracted embryos were fluorescently labeled with antibodies directed against either centrosomes or tubulin.

Automated 3-D cell population analysis in thick tissue sections using laser-scanning confocal-microscopy data

1993 ◽  
Vol 51 ◽  
pp. 562-563
Author(s):  
Hakan Ancin
Keyword(s):  
Laser Scanning ◽  
Population Analysis ◽  
Three Dimensional ◽  
Large Data ◽  
Laser Scanning Confocal Microscopy ◽  
Tissue Slices ◽  
Scanning Confocal Microscopy ◽  
Tissue Sections ◽  
Spatially Adaptive ◽  
Microscopy Data

This paper presents methods for performing detailed quantitative automated three dimensional (3-D) analysis of cell populations in thick tissue sections while preserving the relative 3-D locations of cells. Specifically, the method disambiguates overlapping clusters of cells, and accurately measures the volume, 3-D location, and shape parameters for each cell. Finally, the entire population of cells is analyzed to detect patterns and groupings with respect to various combinations of cell properties. All of the above is accomplished with zero subjective bias.In this method, a laser-scanning confocal light microscope (LSCM) is used to collect optical sections through the entire thickness (100 - 500μm) of fluorescently-labelled tissue slices. The acquired stack of optical slices is first subjected to axial deblurring using the expectation maximization (EM) algorithm. The resulting isotropic 3-D image is segmented using a spatially-adaptive Poisson based image segmentation algorithm with region-dependent smoothing parameters. Extracting the voxels that were labelled as "foreground" into an active voxel data structure results in a large data reduction.

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