Sizes and sources of field placement error in routine irradiation for prostate cancer.
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.
Dunscombe
P
P
Department of Medical Physics, Northeastern Ontario Regional Cancer Centre, Sudbury, Canada.
Loose
S
S
Leszczynski
K
K
D002277:Carcinoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy*; D006801:Humans; D007834:Lasers; D008297:Male; D010347:Patient Care Planning; D011187:Posture; D055656:Prescriptions; D011471:Prostatic Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy*; D011856:Radiographic Image Enhancement; D011879:Radiotherapy Dosage; D012399:Rotation