Isocenter verification in radiotherapy based on automatic image registration

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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 http://hdl.handle.net/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

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