PURPOSE We characterized the foveal avascular zone (FAZ) and the parafoveal capillary network in healthy subjects using swept source OCT optical microangiography (OMAG). METHODS We acquired OMAG images of the macula of 19 eyes (13 healthy individuals) using a prototype swept source laser OCT. En face images of the retinal vasculature were generated for superficial and deep inner retinal layer...

Isogeometric Analysis uses NURBS representations of the domain for performing numerical simulations. The first part of this paper presents a variational framework for generating NURBS parameterizations of swept volumes. The class of these volumes covers a number of interesting free-form shapes, such as blades of turbines and propellers, ship hulls or wings of airplanes. The second part of the p...

We present novel algorithms for fast proximity queries using swept sphere volumes. The set of proximity queries includes collision detection and both exact and approximate separation distance computation. We introduce a new family of bounding volumes that correspond to a core primitive shape grown outward by some ooset. The set of core primitive shapes includes a point, line, and rectangle. Thi...

We present two different methods for calibrating 3D swept-volume ultrasound as a prerequisite for an ultrasound based intraoperative navigation system. Different solutions of the calibration problem for 2D ultrasound exist, but no approach has been published so far that takes advantage of 3D swept-volume ultrasound. In contrast to 3D freehand ultrasound no compounding has to be performed. Inste...

This Letter presents a measurement of the spectral content of frequency shifted pulses generated by a lightwave synthesized frequency sweeper. We found that each pulse is shifted in frequency with very high accuracy. We also discovered that noise originating from light leaking through the acousto- optical modulators and forward propagating Brillouin scattering appear in the spectrum.

A survey of swept volume concepts and methods is presented. It consolidates and relates seemingly different terminology and methods. The methods are divided into five major categories: method with envelope theory, method with sweep differential equation (SDE)/sweep envelope differential equation (SEDE), method with Jacobian rank deficiency, Voxel-based method, and free-form solids’ sweeping met...

Community-acquired methicillin-resistant Staphylococcus aureus have swept across the United States, causing severe morbidity and mortality (see Table 1). This manuscript provides some illustrative cases seen in Wisconsin.

Water is formed and added in the conversion of methanol to hydrocarbons, slowing down both reaction deactivation rates. The retained species that are intermediates coke precursors swept/desorbed, particularly those on silanol sites.

A linear, aeroelastic analysis of a low aspect ratio swept back trapezoidal wing modeled as a cantilever plate is presented. An analytical and numerical formulation for both the aerodynamic forcing and structural response of the wing was developed. The analytical model uses a three dimensional time domain vortex lattice aerodynamic method. A Rayleigh-Ritz approach has been used to transfer equa...