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Fast algorithm for soft straightening of the colon
1Department of Radiology, University of Iowa, Iowa City 52242, USA. zhan-zhang@ieee.org
Rationale And Objectives:
In this study, the authors developed a fast algorithm for soft straightening of the colon with computed tomographic data that greatly accelerates the unraveling process based on the interpolation of representative electric force lines.
Materials And Methods:
Each curved cross section of the colon is defined by electric force lines of a common origin on an electrically charged central path and is constructed by interpolating most of these force lines from a limited number of representative force lines that are traced directly. Both a synthetic colon phantom and a colon in a living patient were used to demonstrate the feasibility of the fast interpolation algorithm compared with direct implementation for soft straightening of the colon.
Results:
The interpolation-based soft-straightening algorithm ran approximately 40 times faster than the direct implementation of the electric field-based soft-straightening algorithm.
Conclusion:
The fast algorithm for soft straightening of the colon has potential for use in computed tomographic colonography.
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