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  4. Combining B-mode and color flow vessel segmentation for registration of hepatic CT and ultrasound volumes
 
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2012
Conference Paper
Titel

Combining B-mode and color flow vessel segmentation for registration of hepatic CT and ultrasound volumes

Abstract
Multimodal registration of intraoperative ultrasound and preoperative computed tomography imaging is the basis for percutaneous hepatic interventions. Currently, a rigid registration is performed manually by the surgeon using vessel structures and other anatomical landmarks for visual guidance. In this work our approach for intraoperative vessel segmentation from two ultrasound imaging modes, namely B-Mode and color flow mode, is presented. This segmentation is an important step for automation of the intraoperative registration which relies on vessel structures visible in contrast enhanced CT and ultrasound volumes. This paper describes the problems that arise when using B-mode ultrasound for segmentation of vessels and how they can be solved by introducing additional vessel information from color flow imaging. On a total number of 21 patients, our system was applied successfully in 15 cases. For nine randomly chosen patients studied in this paper, our system achieves a 3.45 mm accuracy at points used for registration and 5.01 mm for other landmarks which were not used for the registration process.
Author(s)
Keil, Matthias
Fraunhofer-Institut für Graphische Datenverarbeitung IGD
Oyarzun Laura, Cristina
Fraunhofer-Institut für Graphische Datenverarbeitung IGD
Drechsler, Klaus
Fraunhofer-Institut für Graphische Datenverarbeitung IGD
Wesarg, Stefan
Fraunhofer-Institut für Graphische Datenverarbeitung IGD
Hauptwerk
EG VCBM 2012, Eurographics Workshop on Visual Computing for Biology and Medicine
Konferenz
Workshop on Visual Computing for Biology and Medicine (VCBM) 2012
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DOI
10.2312/VCBM/VCBM12/057-064
Language
English
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Fraunhofer-Institut für Graphische Datenverarbeitung IGD
Tags
  • vessel segmentation

  • rigid registration

  • ultrasound

  • computed tomography (...

  • liver

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