title: Source localization for template implants with particular reference to stepping-source afterloaders.
abstract: Source localization from radiographs can be very difficult for template-guided implants if the needle images overlap. At UCSF several techniques to make this task easier have been developed. The techniques include selection of an optimum simulator gantry angle, use of different types of dummies, and differential dummy loading. In addition, several modifications have been made in our brachytherapy planning computer program to facilitate source entry. As a result of these improvements, source localization is now accomplished in much less time with improved accuracy.
authors.affiliation: Department of Radiation Oncology, University of California, San Francisco 94143, USA.
authors.forename: K A
authors.initials: KA
authors.lastname: Weaver
authors.forename: B
authors.initials: B
authors.lastname: Pickett
authors.forename: L W
authors.initials: LW
authors.lastname: Roberts
authors.forename: A
authors.initials: A
authors.lastname: Stuart
mesh_terms: D001918:Brachytherapy / Q000295:instrumentation*; D006801:Humans; D007854:Lead; D012834:Silver; D012984:Software
chemical_list: D007854:Lead; D012834:Silver