title: [Uncertainties in the localization of radiation sources in brachytherapy].
abstract: While investigating ways to solve the problem of locating radiation sources applied in brachytherapy a device was constructed which enables a precise assessment of their or their applicators' position from two only roughly positioned orthogonal radiographs. The overall accuracy (including exposure and evaluation) achieved is +/- 1 mm. The constructional elements and the evaluation algorithm are described and the influence of the location uncertainty on the uncertainty of the dose applied are discussed.
authors.affiliation: Institut für Radiologische Physik, Universitätskliniken, Homburg/Saar.
authors.forename: H K
authors.initials: HK
authors.lastname: Leetz
authors.forename: U
authors.initials: U
authors.lastname: Vogelsang
mesh_terms: D000465:Algorithms; D001918:Brachytherapy / Q000295:instrumentation*; D006801:Humans; D008954:Models, Biological; D011879:Radiotherapy Dosage
vernacular_title: Unsicherheiten bei der Strahlenquellenlokalisation in der Brachytherapie.