The use of digitized port films in assessing new treatment modalities.
An inexpensive computer-based imaging system has been used to compare simulator and portal radiographs. The films were digitized, normalized, and then overlaid for measurement. In a test group of patients, a new treatment protocol for pelvis irradiation was evaluated using this technique. For 90% of the patients, the average error was found to be smaller than 5 mm, and there were no field placement errors greater than 1 cm.
Aldrich
J E
JE
Cancer Treatment and Research Foundation of Nova Scotia, Halifax, Canada.
Berry
J A
JA
Andrew
J W
JW
D005260:Female; D005833:Genital Neoplasms, Female / Q000532:radiotherapy*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods*