Background. The SpyGlass Direct Visualization System (Boston Scientific, Natick, MA) is routinely used during single operator choledochoscopy (SOC) to identify biliary lesions or strictures with a diagnostic accuracy up to 88%. The objective of this study was to determine the interobserver agreement (IOA) of modified scoring criteria for diagnosing biliary lesions/strictures. Methods. 27 SPY SO...

Please note that many of the images in this document have been colour reversed in order to make the document more suitable for printing. The on-line version found above contains the original screen images.

Received: 22 December 2008 Revised: 3 July 2009 Accepted: 23 July 2009 Abstract This article summarises the current state of research into multiple tree visualisations. It discusses the spectrum of current representation techniques used on single trees, pairs of trees and finally multiple trees, in order to identify which representations are best suited to particular tasks and to find gaps in t...

Toy designers and students may benefit from a universal classification system to communicate and ideate new toy concepts. In this paper, we present two graphical tools that help designers to classify and manipulate toy product concepts. The play pyramid is a three-dimensional map that allows designers to classify a toy concept by placing it in a space between what we believe to be four independ...

The developed prototype cartographic application was initially tested and it confirmed the correctness of the concept and usefulness of the proposed solution. Besides software development, the project will resulte in construction of the laboratory and environment of testing the visualizations in mobile systems. At present, further works aiming at specification and final testing the developed co...

Topographic maps have become standard tools for frequently encountered dataanalytic tasks such as visualization, clustering and classification. Unfortunately, however, a complete SOM training methodology is not firmly established yet. For example, when using the standard SOM fitting algorithm, it is well-known that an appropriate choice for the end adaptation radius or final neighborhood width ...

This paper proposes a new isosurface extraction algorithm that extracts portions of the isosurface in a view-dependent manner by ray casting and propagation. The algorithm casts rays through a volume to find visible active cells as seeds and then propagates their polygonal isosurface into the neighboring cells. Small pieces of the isosurface are generated by distance-limited propagation and joi...

The CindyJS Project brings interactive mathematical visualization to a broad variety of devices. Using projective geometry, homotopy methods and well tuned algorithms the CindyJS project is one of the first real time capable software projects in this field that at the same time approaches high-level mathematical descriptions and performance.

s on Human Factors in Computing Systems, 1999.

As the complexity and amount of real world data continuously grows, modern visualization systems are changing. Traditional information visualization techniques are often not sufficient to allow an in-depth visual data exploration process. Multiple view systems combined with linking & brushing are only one building block of a successful InfoVis system. In this paper we propose the incorporation ...