NDLI: Adaptation of marching cubes for the simulation of material removal from segmented volume data

Content Provider	IEEE Xplore Digital Library
Author	Wijewickrema, S. Ioannou, I. Kennedy, G.
Copyright Year	2013
Description	Author affiliation: Dept. of Otolaryngology, Univ. of Melbourne, Melbourne, VIC, Australia (Wijewickrema, S.; Ioannou, I.) \|\| Melbourne Grad. Sch. of Educ., Univ. of Melbourne, Melbourne, VIC, Australia (Kennedy, G.)
Abstract	Virtual reality surgical simulators contain anatomical models constructed from 3D medical image data such as CT or MRI scans. Typically, data is segmented to identify anatomical structures of interest and visualised using a rendering algorithm. Rendered surfaces in surgical simulators must be updated in real time to reflect user interaction within the virtual environment, such as cutting or drilling. Since its introduction in 1987, marching cubes has become a popular rendering algorithm for use in medical image visualisation, due to its simplicity and speed. However, the algorithm is designed for use with continuous data rather than discrete data, as is the case with segmented data. Applying marching cubes to segmented data results in blocky surfaces that require smoothing. In addition, marching cubes uses a single threshold (iso-value) to define the rendered surface and does not provide a means of rendering surfaces based on an upper and lower threshold (iso-interval). This ability is necessary if we wish to render individual segments within a segmented data volume. We introduce modifications to the marching cubes algorithm to enable the use of iso-intervals to construct smooth surfaces representing different segments from segmented volume data. We also discuss a way to render real-time material removal from the constructed surfaces. Our evaluation shows that the performance of this method compares favourably to an existing method, with decreased memory requirements and shorter start-up times.
Starting Page	29
Ending Page	34
File Size	4081629
Page Count	6
File Format	PDF
ISBN	9781479910533
DOI	10.1109/CBMS.2013.6627760
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-20
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Materials Rendering (computer graphics) Bones Anatomical structure Smoothing methods Surgery Mathematical model
Content Type	Text
Resource Type	Article

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