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Geometry transformation consideration in free-hand navigation system for brachytherapy

	Skala, V.; Encarnacao, J.L. ; European Association for Computer Graphics -EUROGRAPHICS-: WSCG 2002, International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision. Conference Proceedings. CD-ROM Plzen: University of West Bohemia, 2002 ISSN: 1213-6980 pp.B71
	International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision (WSCG) <10, 2002, Plzen, Czech Republic>

	English
	Conference Paper
	Fraunhofer IGD ()
	free hand navigation; Brachytherapy; calibration; active patient immobilization

Abstract
In this paper, we summarize the geometry transformation relations among volume dataset, the volume rendering and the tracker system in free-hand navigation for high dose rate brachytherapy application. Subsequently, three algorithms during free-hand navigation: the calibration of needle tip, registration and active immobilization are proposed.