Naslov
Implementation of patient radiation dose assessment system for diagnostic nuclear medicine procedures at the Uiversity Hospital Rijeka

Autori
Dundara Debeljuh, Dea ; Grbac-Ivanković, Svjetlana ; Pribanić, Ivan ; Girotto, Neva ; Jurković, Slaven.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, prošireni sažetak, znanstveni

Izvornik
Zbornik radova 12.simpozija Hrvatskog društva za zaštitu od zračenja / - , 2019, 173-178

Skup
12. Simpozij Hrvatskog društva za zaštitu od zračenja

Mjesto i datum
Varaždin, Hrvatska, 10.04.2019. - 12.04.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
nuclear medicine, radiation risk, effective dose assessment, administered activity, low-dose CT

Sažetak
In nuclear medicine radioactive substances are administered to patients to perform either diagnostic or therapeutic procedure. While dose assessment for therapeutic procedures is important for the outcome of the treatment, in nuclear medicine diagnostic procedures dose assessment is necessary for patient radiation risk estimation, decision of an alternative techique instead of nuclear medicine investigation, protocol optimization and comparison of local practice with national and international guidelines. By Croatian national legislation, following the Directive 2013/59/EURATOM, an information related to patient exposure as a part of specialist medical report is required, in order to achieve better patient radiation protection. Regarding this, the Department for medical physics and radiation protection of the University Hospital Rijeka (UH Rijeka) has designed a patient radiation dose assessment system for diagnostic nuclear medicine procedures based on International Commission on Radiological Protection (ICRP) publications 53, 80 and 128 that was introduced in February 2018. If hybrid SPECT/CT technique is used, in addition to nuclear medicine dose calculations, computed tomography effective dose estimates are calculated by using computed tomography dose-lenght product (DLP) values. For every patient a form with relevant procedure parameters and patient-specific informations is completed by technologists and nuclear medicine specialists. Required parameters include patient personal data, type of procedure and target organ, applied radiopharmaceutical and administered activity, CT dosimetric values and scanned region if computed tomography is used, and a set of patient-specific informations that are relevant for the choice of the dosimetric model proposed in ICRP publications. Collected patient and procedure specific data are used by medical physicist to estimate absorbed dose to organs and effective dose. In order to minimize uncertainties in the activity administered measurement and to achieve accuracy of all physical parameters a comprehensive Quality Control (QC) program is needed. As a result of implemented patient radiation dose estimates system, information on absorbed dose to target organs and organs of interest from applied radionuclide and effective dose calculation are available in patient medical documentation. A set of relevant parameters for dose assessment calculation is also reported so they can be used for future alternative assessment methods. Our one year experience shows improvement in understanding radiation risks and quality of services provided, standardization of activity measurement and finally a good collaboration between different professionals involved in nuclear medicine diagnostics that is of extreme importance for the successful outcome of nuclear medicine procedures.

Izvorni jezik
Engleski

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