Geometrical pre-planning for conformal radiotherapy

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Geometrical pre-planning for conformal radiotherapy (EN)

Baltas, D (EN)
Lahanas, M (EN)
Theodorou, K (EN)
Kappas, C (EN)
Tsougos, I (EN)
Schreibmann, E (EN)

journalArticle (EN)

2014-03-01T01:26:24Z
2007 (EN)


The optimum selection of beams and arcs in conformal techniques is of the outmost importance in modern radiotherapy. In this work we give a description of an analytic method to aid optimum selection, which is based on minimizing the intersection between beams and organs at risk (OAR) and on minimizing the intersection between the beam and the planning target volume (PTV). An arc-selection function that permits selection of irradiation arcs based on individual beam feasibility is introduced. The method simulates the treatment process by defining a computed beam feasibility, for every possible set of gantry-table angles, by taking into account accurately computed intersection volumes between the OAR and beams. The beams are shaped to conform the target using realistic parameters for the treatment process. The results are displayed on a virtual sphere centred at the isocenter with color-coded regions indicating beam feasibility. Arcs selections are performed by searching the map for successive gantry positions at a certain table angle, with feasibility values greater than a user-specified threshold. The accuracy of the method was confirmed by using geometrical regular shapes, as well as real clinical cases. © 2007 Taylor & Francis. (EN)

Oncology (EN)

Reproducibility of Results (EN)
color (EN)
Humans (EN)
Urinary Bladder Neoplasms (EN)
article (EN)
irradiation (EN)
Brain Neoplasms (EN)
data base (EN)
treatment planning (EN)
Rectal Neoplasms (EN)
cancer radiotherapy (EN)
feasibility study (EN)
Radiotherapy, Conformal (EN)
priority journal (EN)
computer assisted radiotherapy (EN)
statistical analysis (EN)
Phantoms, Imaging (EN)
Radiotherapy Planning, Computer-Assisted (EN)
methodology (EN)
beam therapy (EN)

Acta Oncologica (EN)

Αγγλική γλώσσα

TAYLOR & FRANCIS AS (EN)




*Η εύρυθμη και αδιάλειπτη λειτουργία των διαδικτυακών διευθύνσεων των συλλογών (ψηφιακό αρχείο, καρτέλα τεκμηρίου στο αποθετήριο) είναι αποκλειστική ευθύνη των αντίστοιχων Φορέων περιεχομένου.