PURPOSE To evaluate the effectiveness of laser treatment in eyes with diffuse retinal pigment epitheliopathy (DRPE). METHODS The authors retrospectively reviewed the medical records of 56 consecutive patients (78 eyes) with DRPE. All eyes were treated with digital fluorescein angiography guided argon green laser photocoagulation, direct on the focal retinal pigment epithelium (RPE) leaks and ...

Vector fields play an important role in many areas of computational physics and engineering. For effective visualization of vector fields it is necessary to identify and extract important features inherent in the data, defined by filters that characterize certain “patterns”. Our prior approach for vector field analysis used the Clifford Fourier transform for efficient pattern recognition for ve...

Three dimensional grid phantoms offer a number of advantages for measuring imaging related spatial inaccuracies for image guided surgery and radiotherapy. The authors examined the use of rapid prototyping technology for directly fabricating 3D grid phantoms from CAD drawings. We tested three different fabrication process materials, photopolymer jet with acrylic resin (PJ/AR), selective laser si...

Hydroxyl tagging velocimetry (HTV) measurements of velocity were made in a Mach 2 (M 2) flow with a wall cavity. In the HTV method, ArF excimer laser (193 nm) beams pass through a humid gas and dissociate H2O into H + OH to form a tagging grid of OH molecules. In this study, a 7 x 7 grid of hydroxyl (OH) molecules is tracked by planar laser-induced fluorescence. The grid motion over a fixed tim...

This paper presents ongoing work on an advanced flexible circuit interconnect substrate featuring a 24 x 24 (576 element) pad grid array pattern at 300 micron pitch. This eight metal layer circuit is being developed as a highdensity, pixel-level interconnection substrate for a two-dimensional (2D) ultrasound imaging transducer MEMS device. The flexible circuit substrate is constructed using lam...

We consider the problem of resampling for the data obtained by laser scanning on an irregular grid. The data obtained by airborne laser scanning are scattered, and the resampling on a regular grid is needed for the generation of digital surface models (DSM). Some well-known methods are considered in this article: triangle-based linear interpolation, trianglebased nearest neighbor interpolation ...

The incorporation of graphene-based nanodispersoids in ceramic coatings is known to enhance the wear behavior these materials. In this study, for first time, alumina/graphene nanoplatelets (GNPs) were deposited through Suspension High Velocity Oxy-Fuel (SHVOF) thermal spray on Al2O3/TiC substrate composites, which laser microtextured with grid and line surface patterns. Dense around 8?10 ?m thi...

We report a method for characterizing the focussing laser beam exiting the objective in a laser scanning microscope. This method provides the size of the optical focus, the divergence of the beam, the ellipticity and the astigmatism. We use a microscopic-scale knife edge in the form of a simple transmission electron microscopy grid attached to a glass microscope slide, and a light-collecting op...