caa a22 4500 397503105 CHVBK 20180308164537.0 cr unu---uuuuu 161202e19950101xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082529 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082529 In-Field Testing of a New Instrument for Quality Control in Mammography [Elektronische Daten] [M. Gambaccini, M. Marziani, G.C. Candini, E. De Guglielmo, C. Bertaggia] Routine quality control procedures for mammography need a periodical testing of the X ray units. The checks of kVp accuracy, mA linearity, exposure reproducibility and HVL consistency require several instruments (non-invasive kVp meter, dosemeter, absorbers, etc.) and a lot of time. The use of a new instrument for a quick and easy measurement of kVp ripple, HVL, exposure time and incident air kerma is presented. The instrument, composed of an X ray probe and a portable computer, allows the evaluation of the above parameters in a single shot. Two mammographic units have been routinely tested measuring kVp, HVL, exposure time and incident air kerma. The evaluation has been performed exposing the probe during the execution of a performance phantom radiograph. The relationships between the fluctuations of the measured parameters are compared with the limiting values proposed by CEC guidelines. Correlation analysis of the whole data set allows malfunctioning identification. The instrument works properly and is very useful in quality control activity. Radiation Protection Dosimetry Gambaccini M. aut Marziani M. aut Candini G.C. aut De Guglielmo E. aut Bertaggia C. aut Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 221-225 0144-8420 57:1-4<221 1995 57 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082529 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082529 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gambaccini M. aut NATIONALLICENCE 700 1- Marziani M. aut NATIONALLICENCE 700 1- Candini G.C. aut NATIONALLICENCE 700 1- De Guglielmo E. aut NATIONALLICENCE 700 1- Bertaggia C. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 221-225 0144-8420 57:1-4<221 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