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Title: Esterr-pro: a setup verification software system using electronic portal imaging
Authors: Ασβεστάς, Παντελής Α.
Δελήμπασης, Κωνσταντίνος Κ.
Μουραβλιάνσκυ, Νικόλαος Α.
Ματσόπουλος, Γεώργιος Κ.
Item type: Journal article
Keywords: Software registration system;Radiotherapy;Λογισμικό σύστημα καταχώρησης;Ραδιοθεραπεία
Subjects: Medicine
Medical technology
Ιατρικά όργανα και εξοπλισμός
Issue Date: 13-Jan-2015
Date of availability: 13-Jan-2015
Publisher: Hindawi Publishing Corporation
Abstract: The purpose of the paper is to present and evaluate the performance of a new software-based registration system for patient setup verification, during radiotherapy, using electronic portal images. The estimation of setup errors, using the proposed system, can be accomplished by means of two alternate registration methods. (a) The portal image of the current fraction of the treatment is registered directly with the reference image (digitally reconstructed radiograph (DRR) or simulator image) using a modified manual technique. (b) The portal image of the current fraction of the treatment is registered with the portal image of the first fraction of the treatment (reference portal image) by applying a nearly automated technique based on self-organizing maps, whereas the reference portal has already been registered with a DRR or a simulator image. The proposed system was tested on phantom data and on data from six patients. The root mean square error (RMSE) of the setup estimates was 0.8 ± 0.3 (mean value ± standard deviation) for the phantom data and 0.3 ± 0.3 for the patient data, respectively, by applying the two methodologies. Furthermore, statistical analysis by means of the Wilcoxon nonparametric signed test showed that the results that were obtained by the two methods did not differ significantly (P value > 0.05).
Language: English
Citation: Asvestas, P., Delibasis, K., Mouravliansky, N. and Matsopoulos, G. (2007). Esterr-pro: a setup verification software system using electronic portal imaging. International Journal of Biomedical Imaging. vol. 2007. pp. 1-11. Available from: [Accessed 29/11/2006]
Journal: International Journal of Biomedical Imaging
Type of Journal: With a review process (peer review)
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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