Partition-Based extraction of cerebral arteries from CT angiography with emphasis on adaptive tracking

  • Authors:
  • Hackjoon Shim;Il Dong Yun;Kyoung Mu Lee;Sang Uk Lee

  • Affiliations:
  • School of Electrical Engineering and Computer Science, Seoul National University, Seoul, Korea;School of Electronics and Information Engineering, Hankuk University of Foreign Studies, Yongin, Korea;School of Electrical Engineering and Computer Science, Seoul National University, Seoul, Korea;School of Electrical Engineering and Computer Science, Seoul National University, Seoul, Korea

  • Venue:
  • IPMI'05 Proceedings of the 19th international conference on Information Processing in Medical Imaging
  • Year:
  • 2005

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Abstract

In this paper a method to extract cerebral arteries from computed tomographic angiography (CTA) is proposed. Since CTA shows both bone and vessels, the examination of vessels is a difficult task. In the upper part of the brain, the arteries of main interest are not close to bone and can be well segmented out by thresholding and simple connected-component analysis. However in the lower part the separation is challenging due to the spatial closeness of bone and vessels and their overlapping intensity distributions. In this paper a CTA volume is partitioned into two sub-volumes according to the spatial relationship between bone and vessels. In the lower sub-volume, the concerning arteries are extracted by tracking the center line and detecting the border on each cross-section. The proposed tracking method can be characterized by the adaptive properties to the case of cerebral arteries in CTA. These properties improve the tracking continuity with less user-interaction.