Three Dimensional Navigation System for Marine Structures using Total Stations

A nonfluoroscopic approach for electrophysiology and catheter ablation procedures using a three-dimensional navigation system.

BACKGROUND Three-dimensional (3D) electroanatomical navigation systems decrease the fluoroscopy time of electrophysiology and ablation procedures. The aim of this study was to assess the safety and efficacy of a complete nonfluoroscopic approach for electrophysiologic studies and right-sided catheter ablations for supraventricular tachycardia in patients with normal cardiac anatomy using a 3D, ...

Dynamic Analysis of Three Dimensional Asymmetric Isolated Structures

Dynamic Analysis of Three Dimensional Asymmetric Isolated Structures

Change Detection for Topographic Mapping Using Three- Dimensional Data Structures

Identifying significant changes to our urban areas is a prerequisite for accurate topographic mapping. This paper presents an approach based on octree data structures to identify change between two sets of point cloud data. The aim of the study was to establish if a method based on the comparison of point clouds could be used to detect simply where topographic change had occurred. As many of th...

General solution for three-dimensional surface structures using direct methods

A general method for solving surface structures in three dimensions using surface x-ray-diffraction data coupled with direct methods is outlined. The method exploits the existence of a support constraint normal to the surface, and couples the concepts of projections, operators, and sets used in the image reconstruction literature with statistical operators used in direct methods. The approach p...