Extracting isovolumes from three-dimensional torso geometry using PROLOG


Three-dimensional (3-D) Imite element torso models are widely used to simulate deflbrillation field quantities, such as potential, gradient, and current density. These quantities are computed at spatial nodes that comprise the torso model. These spatial nodes typically number between 105 and 106, which makes the comprehension of torso deli brillat ion simulation output difficult. Therefore, the objective of this study is to rapidly prototype software to extract a subset of the geometric model of the torso for visualization in which the nodal information associated with the geometry of the model meets a specified threshold value (e.g., minimum gradient). The data extraction software is implemented in PROLOG, which is used to correlate the coordinate, structural, and nodal data of the torso model. A PROLOG-based environment has been developed and is used to rapidly design and test new methods for sorting, collecting, and optimizing data extractions from defibrillation simulations in a human torso model for subsequent visualization. © 1998 IEEE.

Publication Title

IEEE Transactions on Information Technology in Biomedicine