title: Optimization of radiation therapy in prostatic cancer.
abstract: The results of a study on the optimization of external irradiation of prostatic cancer are discussed. The study was performed with the aid of an automatic water phantom, an automatic densitometer, and a computerized treatment planning system using an anthropometric phantom Alderson. The following parameters were studied: Dose gradient, the size of areas of selected isodoses, and the shape of the 90% isodose. At present, we consider that the twosector biaxial arc technique characterized by an arc angle of 120 degrees, a distance of the arc axes of 3 cm, employing a 20 MeV X-ray of a linear accelerator is the optimal technique for target irradiation of carcinomas of the prostate.
authors.affiliation: Research Institute of Clinical and Experimental Oncology, Brno, Czechoslovakia.
authors.forename: V
authors.initials: V
authors.lastname: Strnad
authors.forename: T
authors.initials: T
authors.lastname: Tacev
authors.forename: O
authors.initials: O
authors.lastname: Ott
authors.forename: V
authors.initials: V
authors.lastname: Krystof
authors.forename: M
authors.initials: M
authors.lastname: Konecný
authors.forename: O
authors.initials: O
authors.lastname: Rasovská
mesh_terms: D006801:Humans; D008297:Male; D008953:Models, Anatomic; D011471:Prostatic Neoplasms / Q000473:pathology / Q000532:radiotherapy*; D011881:Radiotherapy, Computer-Assisted