The influence of grid size on accuracy in radiotherapy dose plotting

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¹Department of Medical Physics and Bioengineering, South Wales Radiotherapy and Oncology Centre, Velindre Hospital, Cardiff, United Kingdom.

|January 1, 1990

Abstract:

The recent article by Niemierko and Goitein [Med. Phys. 16, 239-247 (1989)] illustrates well the errors which are occurring in plotting isodose lines. We wish to augment their analysis with similar work done at Cardiff a few years ago; to indicate some practical treatment outcomes they have omitted; to propose even more stringent requirements of the grid size used; and thus to further alert users and software manufacturers to this problem.

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The influence of grid size on accuracy in radiotherapy dose plotting

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Abstract:

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