SPECTRAL DOMAIN-OPTICAL COHERENCE TOMOGRAPHY IMAGE CONTRAST AND BACKGROUND COLOR SETTINGS INFLUENCE IDENTIFICATION OF RETINAL STRUCTURES.

PURPOSE To evaluate image contrast and color setting on assessment of retinal structures and morphology in spectral-domain optical coherence tomography. METHODS Two hundred and forty-eight Spectralis spectral-domain optical coherence tomography B-scans of 62 patients were analyzed by 4 readers. B-scans were extracted in 4 settings: W + N = white background with black image at normal contrast 9; W + H = white background with black image at maximum contrast 16; B + N = black background with white image at normal contrast 12; B + H = black background with white image at maximum contrast 16. Readers analyzed the images to identify morphologic features. Interreader correlation was calculated. Differences between Fleiss-kappa correlation coefficients were examined using bootstrap method. Any setting with significantly higher correlation coefficient was deemed superior for evaluating specific features. RESULTS Correlation coefficients differed among settings. No single setting was superior for all respective spectral-domain optical coherence tomography parameters (P = 0.3773). Some variables showed no differences among settings. Hard exudates and subretinal fluid were best seen with B + H (κ = 0.46, P = 0.0237 and κ = 0.78, P = 0.002). Microaneurysms were best seen with W + N (κ = 0.56, P = 0.025). Vitreomacular interface, enhanced transmission signal, and epiretinal membrane were best identified using all color/contrast settings together (κ = 0.44, P = 0.042, κ = 0.57, P = 0.01, and κ = 0.62, P ≤ 0.0001). CONCLUSION Contrast and background affect the evaluation of retinal structures on spectral-domain optical coherence tomography images. No single setting was superior for all features, though certain changes were best seen with specific settings.

Jesup-Wayne County Airport land acquisition and runway improvements : environmental impact statement.

F only available in microfiche.

Solid state data acquisition and processing system (SSDAPS). Volume III: description, installation, calibration, and operating procedures. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Sourcebook on transit-related environmental regulations: requirements affecting the acquisition and maintenance of transit vehicles and facilities. Final report.

Federal Transit Administration, Washington, D.C.

Planning of automated data acquisition and process control systems (ADACS) /

"January 1980."

Solid state data acquisition and processing system (SSDAPS). Volume I: system summary and volume II: description, operation, and verification test report. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Software support system for data acquisition and analysis. Final report.

National Highway Traffic Safety Administration, East Liberty, Ohio

Acquisition and chemical analysis of mother's milk for selected toxic substances /

"December 1980."

The acquisition and maintenance of medical equipment /

Item 215

Executive summary : 1983 DOD Standardization Conference : reducing acquisition and support costs for the DOD.

Cover title.

Public image of and attitudes toward Smokey the Bear and forest fires: a study conducted for Cooperative Forest Fire Prevention Program /

Mode of access: Internet.

A Guide for the acquisition and distribution of commercial products /

"April 1980."

A treatise on the operations of surgery, with a description and representation of the instruments used in performing them : to which is prefixed an introduction on the nature and treatment of wounds, abscesses and ulcers /

Mode of access: Internet.

On the scheduling of training conditions for the acquisition and transfer of perceptual-motor skills.

Includes bibliography.

The prediction and representation of phase equilibria and physicochemical properties in complex slag systems

The development of new experimental techniques for the determination of phase equilibria in complex slag systems, chemical thermodynamic, and viscosity models is reported. The new experimental data, and new thermodynamic and viscosity models, have been combined in a custom-designed computer software package to produce limiting operability diagrams for slag systems. These diagrams are used to describe phase equilibria and physicochemical properties in complex slag systems. The approach is illustrated with calculations on the system FeO-Fe2O3-CaO-SiO-Al2O3 at metallic iron saturation, slags produced in coal slagging gasifiers, and in the reprocessing of nonferrous smelting slags. This article was presented at the Mills Symposium Molten Metals, Slags and Glasses-Characterisation of Properties and Phenomena held in London in August 2000.