caa a22 4500 397501927 CHVBK 20180308164534.0 cr unu---uuuuu 161202e19950101xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082534 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082534 Contrast-Detail Testing Techniques for Modern X Ray Image Intensifier Systems [Elektronische Daten] [C.J. Kotre, N.W. Marshall, K. Faulkner] Modern X ray image intensifier-TV systems are now commonly permanently coupled to a digital image processing unit for real-time weighted frame averaging and last image hold during fluoroscopy. The problem of carrying out meaningful threshold contrast-detail diameter tests on systems of this type is discussed. A numerical model of the frame averaging process, which includes the effects of the observer and the analogue components of the system is developed and experimentally verified. The importance of the persistence of the analogue components of the system to its performance is discussed. Radiation Protection Dosimetry Kotre C.J. aut Marshall N.W. aut Faulkner K. aut Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 245-247 0144-8420 57:1-4<245 1995 57 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082534 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082534 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kotre C.J. aut NATIONALLICENCE 700 1- Marshall N.W. aut NATIONALLICENCE 700 1- Faulkner K. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 245-247 0144-8420 57:1-4<245 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