Omni-wedge technique for increased dose homogeneity in head and neck radiotherapy

Abstract Dose homogeneity in head and neck tumour irradiation is a challenging task for conventional radiotherapy due to large anatomic contour irregularities and tissue heterogeneities in irradiation volumes. We present a simple technique based on the omni-wedge concept which uses superimposed fiel...

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Bibliographic Details
Published in:Physica medica 2009-09, Vol.25 (3), p.154-159
Main Authors: Vinagre, F.L.R, Simões, P.C.P.S, Rachinhas, P.J.B.M
Format: Article
Language:English
Subjects:
Algorithms
Computer Simulation
Head and neck
Head and Neck Neoplasms - radiotherapy
Humans
Models, Biological
Omni-wedge
Radiology
Radiometry - methods
Radiotherapy
Radiotherapy Dosage
Radiotherapy Planning, Computer-Assisted - methods
Radiotherapy, Computer-Assisted - methods
Radiotherapy, Conformal - methods
Treatment planning
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Summary:Abstract Dose homogeneity in head and neck tumour irradiation is a challenging task for conventional radiotherapy due to large anatomic contour irregularities and tissue heterogeneities in irradiation volumes. We present a simple technique based on the omni-wedge concept which uses superimposed fields, orthogonally wedged, to improve target-volumes homogeneity in head and neck tumour irradiation. The routine implementation of this technique is straightforward and easy to achieve with standard radiotherapy equipment and treatment planning software. Our five-year experience in the clinical implementation of this technique is presented.
ISSN:1120-1797
1724-191X
DOI:10.1016/j.ejmp.2009.02.002