Received: 9 August 2003 Revised: 14 September 2003 Accepted: 15 September 2003 Abstract One of the goals of information visualization is to support human thinking through the use of external visual aids. Mathematical mindtools can act as visual cognitive aids to enhance thinking and reasoning about mathematical objects and concepts. Although some mathematical mindtools incorporate information v...

Projection or point placement techniques, which seek to map multidimensional data onto visual spaces, have been the interest of the visual data analysis community for a long time due to their ability for exploratory tasks based on similarity and correlation. However, many problems still persist that impair their application, particularly those caused by the compromises involving computational c...

X-ray-absorption fine-structure measurements from the Mn and La K edges of samples of La12xCaxMnO3 (x50→1) are presented as a function of temperature. In the insulating state, distortions of the Mn-O environment are found to be linear with calcium concentration x . These distortions are consistent with a model where individual Mn sites have strong Jahn-Teller ~JT! distortions while Mn sites do ...

BACKGROUND Imaging of myocardial ablation lesions during electrophysiology procedures would enable superior guidance of interventions and immediate identification of potential complications. The aim of this study was to establish clinically suitable MRI-based imaging techniques for intraprocedural lesion visualization in interventional electrophysiology. METHODS AND RESULTS Interventional ele...

Particle-based fluid simulation (PFS), such as Smoothed Particle Hydrodynamics (SPH) and Position-based Fluid (PBF), is a mesh-free method that has been widely used in various fields, including astrophysics, mechanical engineering, and biomedical engineering for the study of liquid behaviors under different circumstances. Due to its meshless nature, most analysis techniques that are developed f...

Intra-cardiac procedures often involve fast-moving anatomic structures with large spatial extent and high geometrical complexity. Real-time visualization of the moving structures and instrument-tissue contact is crucial to the success of these procedures. Real-time 3D ultrasound is a promising modality for procedure guidance as it offers improved spatial orientation information relative to 2D u...

With the introduction of medical scanners, the demand for efficient visualization of scanned data increases. Such visualization is of great importance in many medical applications. In this paper, we first introduce an optimized algorithm for extracting arbitrarily-oriented cross sectional slices from volumetric datasets, which obviously allows for an enhanced view compared to the traditional ax...