caa a22 4500 397503067 CHVBK 20180308164537.0 cr unu---uuuuu 161202e19950101xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082522 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082522 Knowledge Acquisition, Representation and Reasoning in a Gamma Camera Quality Control Expert System [Elektronische Daten] [P.J. Slomka, T.D. Cradduck, J.A. Chudziak] Gamma camera quality control (QC) requires several test procedures which involve experienced staff. In an attempt to help medical personnel and automate these tasks, a prototype expert system was developed. A large database of faulty QC images and associated case histories was compiled. These cases were used in formulating object-oriented models for knowledge representation and reasoning. QC image features, artefacts and hypotheses are represented as hierarchical trees, with levels corresponding to the amount of detail in the description. This paradigm allows reasoning on various levels of abstraction. A small number of control rules derive appropriate conclusions using pattern matching techniques. Such a modular approach overcomes the complexity and maintenance problems often found in traditional rule-based systems. Preliminary studies of system performance suggest that it can be used as an intelligent QC assistant. It is hoped that the expert system can be helpful in centres lacking technical support, for example in third world countries. Radiation Protection Dosimetry Slomka P.J. aut Cradduck T.D. aut Chudziak J.A. aut Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 191-194 0144-8420 57:1-4<191 1995 57 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082522 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082522 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Slomka P.J. aut NATIONALLICENCE 700 1- Cradduck T.D. aut NATIONALLICENCE 700 1- Chudziak J.A. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 191-194 0144-8420 57:1-4<191 1995 57 rpd Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford