caa a22 4500 397503555 CHVBK 20180308164538.0 cr unu---uuuuu 161202e19950101xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082577 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082577 Comparison of Entrance Surface Doses and Radiographic Techniques in the West Midlands (UK) with the CEC Criteria, Specifically for Lateral Lumbar Spine Radiographs [Elektronische Daten] [E.A. McNeil, D.E. Peach, D.H. Temperton] The technique factors used by hospitals for five common examinations (skull, thoracic spine, lumbar spine, abdomen and pelvis) were compared with the CEC criteria and calculated doses were assessed. A more detailed survey was undertaken for lateral lumbar spine radiographs, including direct entrance surface dose measurements. This showed that: (1) 11 (39%) departments used nominal film-screen speed classes below 400. (2) 5 (18%) departments used a mean focus-film distance of less than 100 cm. (3) 18 (64%) departments used kilovoltages less than 90 kV. (4) 5 (18%) departments exceeded the reference dose of 30 mGy. A mean TLD dose of 19.9 mGy (s=12.2 mGy, n=245) was obtained for patients whose individual weights were within the range 50-90 kg. The considerable variation between the mean calculated/direct dose ratio for each department demonstrates the importance of direct dose measurements. The overall mean dose ratio was 1.0 (s-0.47, n=217). Radiation Protection Dosimetry McNeil E.A. aut Peach D.E. aut Temperton D.H. aut Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 437-440 0144-8420 57:1-4<437 1995 57 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082577 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082577 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- McNeil E.A. aut NATIONALLICENCE 700 1- Peach D.E. aut NATIONALLICENCE 700 1- Temperton D.H. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 437-440 0144-8420 57:1-4<437 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