title: Guidelines and algorithms: strategies for standardization of referral criteria in diagnostic radiology.
abstract: Guidelines can be regarded as special forms of algorithms and have been shown to be useful tools for supporting medical decision making. With the Council Directive 97/43/Euratom recommendations concerning referral criteria for medical exposure have to be implemented into national law of all EU member states. The time- and cost-consuming efforts of developing, implementing, and updating such guidelines are balanced by the acceptance in clinical practice and eventual better health outcomes. Clearly defined objectives with special attention drawn on national and regional differences among potential users, support from organisations with expertise in evidence-based medicine, separated development of the evidence component and the recommendations component, and large-scale strategies for distribution and implementation are necessary. Editors as well as users of guidelines for referral criteria have to be aware which expectations can be met and which cannot be fulfilled with this instrument; thus, dealing with guidelines requires a new form of "diagnostic reasoning" based on medical ethics.
authors.affiliation: Department of Diagnostic Radiology, University of Vienna, Allgemeines Krankenhaus, Währinger Gürtel 18-20, 1090 Vienna, Austria. franz.kainberger@billrothhaus.at
authors.forename: Franz
authors.initials: F
authors.lastname: Kainberger
authors.forename: Heinrich
authors.initials: H
authors.lastname: Czembirek
authors.forename: Franz
authors.initials: F
authors.lastname: Frühwald
authors.forename: Peter
authors.initials: P
authors.lastname: Pokieser
authors.forename: Herwig
authors.initials: H
authors.lastname: Imhof
mesh_terms: D000465:Algorithms; D003952:Diagnostic Imaging / Q000592:standards; D019317:Evidence-Based Medicine; D006801:Humans; D017410:Practice Guidelines as Topic / Q000592:standards; D011871:Radiology / Q000191:economics / Q000592:standards*; D012017:Referral and Consultation / Q000592:standards*