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Identifier	000359459
Title	Image-guided brachytherapy robot
Alternative Title	Ρομπότ βραχυθεραπείας απεικονιστικά καθοδηγούμενο
Author	Αρετοπούλου, Δέσποινα Δημητρίου
Thesis advisor	Troccaz, Jocelyne
Thesis advisor	Baumann, Michael
Thesis advisor	Τζιρίτας, Γεώργιος
Abstract	Transrectal ultrasound (TRUS)-guided brachytherapy is a treatment option for prostate cancer which involves the implantation of seeds into the prostate. Seed localization is important for the evaluation of implants' distribution, which will reveal any deviations from the prescribed dose. This report, describes a method of automatic seed detection using 3D ultrasound images, ehich could be performes by an image-guided brachytherapy robot during the intraoperative dosimetry procedure. One dimensional Hough transofrm is applied to detect the trace of a seed, a bright 'tail' of pixels, in pre-scan converted ultrasound images. The purpose of the proposed method is to define seeds candidates of an ultrasound volume for further image processing. The experiments with P.V.C. phantom showed that the true positive rate for seed detection is 100%.
Language	English
Subject	Echographie
	Hough transform
	Intraoperative dosimetry
	La curitherapie de la prostate
	La detection de graines
	La dosimetrie peroperatoire
	Prostate Brachytherapy
	Seed detection
	Ultrasound imaging
	Απεικόνιση υπερήχου
	Βραχυθεραπεία προστάτου
	Διεγχειρητική δοσιμετρία
	Εντοπισμός κόκκων
	Μετασχηματσιμός Hough
Issue date	2010-11-19
Collection	School/Department--School of Sciences and Engineering--Department of Computer Science--Post-graduate theses
	Type of Work--Post-graduate theses
Permanent Link	https://elocus.lib.uoc.gr//dlib/d/d/3/metadata-dlib-1e02706b80fa9be8514b3a53908f40a0_1281082871.tkl
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