05687737 is referenced by 510 patents and cites 12 patents.

An optimal electrophysiologic mapping system for map-directed arrhythmia surgery and cardiac research allows rapid and accurate interpretation of cardiac activation sequences. The system can display activation or potential distribution data on an anatomically accurate 3-D model of the heart and allows fast, interactive control of viewing characteristics, including control of which cardiac surfaces are displayed, control of virtual lighting, rotational control of the displayed image, etc. The system employs two computer programs, GETPIC3 and MAP3, and runs on a Silicon Graphics workstation capable of rapid graphics calculations and displays. The system utilizes 3-D models of epicardial and endocardial surfaces created with the GETPIC3 program from a sequence of 2-D images of a heart. The individual surfaces are triangulated and may be smoothed using a spline function. The MAP3 program displays activation times either as static isochronous maps or as dynamic time-since-last-activation maps. In the latter case, surface color denotes the time elapsed since a particular area activated. Potential distribution data may also be displayed dynamically. A mouse allows the system operator to control real-time rotation of the model in three dimensions, and any surface can be hidden interactively for better viewing of the data. Control is also provided over the starting, stopping, reversing, and repeating of data, as well as over the frame rate for dynamic displays.

Title
Computerized three-dimensional cardiac mapping with interactive visual displays
Application Number
959088
Publication Number
5687737
Application Date
October 31, 1994
Publication Date
November 18, 1997
Inventor
Richard B Schuessler
Ballwin
MO, US
John P Boineau
Ladue
MO, US
James L Cox
Ladue
MO, US
Barry H Branham
Ballwin
MO, US
Agent
Howell & Haferkamp L C
Assignee
Washington University
MO, US
IPC
A61B 5/044
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