Full Body Virtual Autopsies using a State-of-the-art Volume Rendering Pipeline

Authors:
Patric Ljung;Calle Winskog;Anders Persson;Claes Lundstrom;Anders Ynnerman
Affiliations:
IEEE;-;-;IEEE;IEEE
Venue:
IEEE Transactions on Visualization and Computer Graphics
Year:
2006

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Abstract

This paper presents a procedure for virtual autopsies based on interactive 3D visualizations of large scale, high resolution data from CT-scans of human cadavers. The procedure is described using examples from forensic medicine and the added value and future potential of virtual autopsies is shown from a medical and forensic perspective. Based on the technical demands of the procedure state-of-the-art volume rendering techniques are applied and refined to enable real-time, full body virtual autopsies involving gigabyte sized data on standard GPUs. The techniques applied include transfer function based data reduction using level-of-detail selection and multi-resolution rendering techniques. The paper also describes a data management component for large, out-of-core data sets and an extension to the GPU-based raycaster for efficient dual TF rendering.Detailed benchmarks of the pipeline are presented using data sets from forensic cases.