title: [Conservative calibration of a clearance monitor system for waste material from nuclear medicine].
abstract: Clearance monitor systems are used for gross gamma measurements of waste potentially contaminated with radioactivity. These measurements are to make sure that legal requirements, e.g. clearance criteria according to the german radiation protection ordinance, are met. This means that measurement results may overestimate, but must not underestimate the true values. This paper describes a pragmatic way using a calibrated Cs-137 point source to generate a conservative calibration for the clearance monitor system used in the Medizinische Hochschule Hannover (MHH). The most important nuclides used in nuclear medicine are considered. The measurement result reliably overestimates the true value of the activity present in the waste. The calibration is compliant with the demands for conservativity and traceability to national standards.
authors.affiliation: Medizinische Hochschule Hannover, Stabsstelle Strahlenschutz und Abteilung Medizinische Physik - OE 0020, Carl-Neuberg-Str. 1, D-30625 Hannover. Electronic address: wanke.carsten@mh-hannover.de.
authors.forename: Carsten
authors.initials: C
authors.lastname: Wanke
authors.affiliation: Medizinische Hochschule Hannover, Stabsstelle Strahlenschutz und Abteilung Medizinische Physik - OE 0020, Carl-Neuberg-Str. 1, D-30625 Hannover.
authors.forename: Lilli
authors.initials: L
authors.lastname: Geworski
mesh_terms: D000465:Algorithms; D002138:Calibration; D005858:Germany; D008506:Medical Waste / Q000032:analysis* / Q000517:prevention & control; D009683:Nuclear Medicine / Q000592:standards*; D017410:Practice Guidelines as Topic; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000295:instrumentation* / Q000592:standards*; D011850:Radioactive Waste / Q000032:analysis* / Q000517:prevention & control; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D008506:Medical Waste; D011850:Radioactive Waste
keywords: Clearance; Freigabe; Freigabemonitor; Kalibrierung; calibration; clearance monitor; radioactive waste; radioaktive Reststoffe
vernacular_title: Konservative Kalibrierung eines Freimesssystems für Reststoffe aus dem nuklearmedizinischen Betrieb.