Isocenter verification in radiotherapy based on automatic image registration

Markaki, V; Asvestas, P; Matsopoulos, G; Kouloulias, V

dc.contributor.author	Markaki, V	en
dc.contributor.author	Asvestas, P	en
dc.contributor.author	Matsopoulos, G	en
dc.contributor.author	Kouloulias, V	en
dc.date.accessioned	2014-03-01T02:52:03Z
dc.date.available	2014-03-01T02:52:03Z
dc.date.issued	2009	en
dc.identifier.issn	16800737	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35818
dc.subject	CT	en
dc.subject	Image registration	en
dc.subject	Isocenter	en
dc.subject	Radiotherapy	en
dc.subject	Virtual simulation	en
dc.subject.other	Automatic image registration	en
dc.subject.other	Clinical practices	en
dc.subject.other	CT	en
dc.subject.other	CT scan	en
dc.subject.other	Isocenters	en
dc.subject.other	Nonrigid image registration	en
dc.subject.other	Patient setup	en
dc.subject.other	Planning CT	en
dc.subject.other	Registration methods	en
dc.subject.other	Setup errors	en
dc.subject.other	Treatment planning	en
dc.subject.other	Virtual simulations	en
dc.subject.other	Biomechanics	en
dc.subject.other	Biomedical engineering	en
dc.subject.other	Biophysics	en
dc.subject.other	Image registration	en
dc.subject.other	Imaging systems	en
dc.subject.other	Medical imaging	en
dc.subject.other	Radiotherapy	en
dc.subject.other	Computerized tomography	en
dc.title	Isocenter verification in radiotherapy based on automatic image registration	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1007/978-3-642-03882-2-185	en
heal.identifier.secondary	http://dx.doi.org/10.1007/978-3-642-03882-2-185	en
heal.publicationDate	2009	en
heal.abstract	In the present study, a non-rigid image registration method was employed for verification of the radiotherapy isocenter position. The registration method was applied to the CT scan of the treatment planning and an additional verification CT scan, which was acquired prior to the treatment delivery. The alignment of the two CT scans allowed the estimation of the isocenter displacement with respect to the initial isocenter position in the planning CT volume. The results, acquired from the CT scans of twenty patients with breast/lung cancer, were compared with the actual setup errors, estimated using DRR and EPI in the clinical practice. This comparison led to the conclusion that the isocenter displacement, calculated by the proposed method, can further be translated into patient setup error inside the LINAC, providing a good approximation of the setup error correction of the DRR/EPI comparison.	en
heal.journalName	IFMBE Proceedings	en
dc.identifier.doi	10.1007/978-3-642-03882-2-185	en
dc.identifier.volume	25	en
dc.identifier.issue	4	en
dc.identifier.spage	692	en
dc.identifier.epage	695	en