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Localizing Calcifications in Cardiac CT Data Sets Using a New Vessel Segmentation Approach

The new generation of multislice computed tomography (CT) scanners allows for the acquisition of high-resolution images of the heart. Based on that image data, the heart can be analyzed in a noninvasive way—improving the diagnosis of cardiovascular malfunctions on one hand, and the planning of an eventually necessary intervention on the other. One important parameter for the evaluation of the severeness of a coronary artery disease is the number and localization of calcifications (hard plaques). This work presents a method for localizing these calcifications by employing a newly developed vessel segmentation approach. This extraction technique has been developed for, and tested with, contrast-enhanced CT data sets of the heart. The algorithm provides enough information to compute the vessel diameter along the extracted segment. An approach for automatically detecting calcified regions that combines diameter information and gray value analysis is presented. In addition, specially adapted methods for the visualization of these analysis results are described.

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Notes

  1. World Health Organization 2005, web: http://www.who.int

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  5. Philips: Brilliance CT 64-channel.

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Acknowledgements

This work has been partially funded by the German Federal Ministry of Education and Research (BMBF) project Medarpa (research grant 01IRA09B). We want to thank the Institute for Diagnostic and Interventional Radiology of the Johann Wolfgang Goethe University Frankfurt, Germany for providing us the cardiac CT data sets.

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Correspondence to Stefan Wesarg.

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Wesarg, S., Khan, M.F. & Firle, E.A. Localizing Calcifications in Cardiac CT Data Sets Using a New Vessel Segmentation Approach. J Digit Imaging 19, 249–257 (2006). https://doi.org/10.1007/s10278-006-9947-6

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  • DOI: https://doi.org/10.1007/s10278-006-9947-6

Key Words

  • Computed tomography
  • vessel segmentation
  • coronary arteries
  • calcification
  • image analysis
  • visualization