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Stereotactic Radiosurgery for Gynecologic Cancer
Published on: April 17, 2012
Sizes and sources of field placement error in routine irradiation for prostate cancer
P Dunscombe1, S Loose, K Leszczynski
1Department of Medical Physics, Northeastern Ontario Regional Cancer Centre, Sudbury, Canada.
Abstract:
Discrepancies between prescribed and treated field edges have been measured from 76 film pairs taken on 29 patients being treated for prostate cancer. The distribution of field edge discrepancies is described by a standard deviation of 4.5 mm and has an average absolute value of 3.5 mm. The observed discrepancies are shown to be attributable to field position errors and hence, in principle, are easily rectifiable.
