Περίληψη:
Four hundred and ninety-five adult patients in 16 medical centres participated in this study aiming to investigate the congruence between the volume CT dose index (CTDIvol) monitor values and measured ones during common CT procedures, performed by 20 systems. Tube output CTDIair measurements were carried out on single and multislice scanners for any kV, slice thickness, mA and FOV combination used. The maximum/minimum ratio of measured CTDIvol values found to be 3.1, 3.5, 7.4, 7.5, 4.2, 11.3 and 5.5 for head base, head cerebrum, thorax, abdomen, pelvis, cervical spine and lumbar spine protocols, respectively. The mean divergence between the measured and displayed CTDIvol values was 4.2, 3.5, 21.0, 2.7, 4.9, 23.9 and 22.8 % for protocols as mentioned above, respectively. From the perspective of the number of detector rows of the scanners, the mean divergence was 26.7, 26.0, 0.8, 21.1, 20.4, 21.9, 25.3, 5.2 and 10.1 %for single, dual, 4, 6, 16, 24, 64, 128 and dual source 256-slice systems, respectively. © The Author 2013. Published by Oxford University Press. All rights reserved.
Συγγραφείς:
Stratis, A.
Molfetas, M.
Panagiotakis, N.
Louizi, A.
Kottou, S.
Λέξεις-κλειδιά:
adult; article; computed tomography scanner; computer assisted tomography; computer program; equipment design; human; image quality; methodology; multicenter study; radiation dose; radiometry; reproducibility, Adult; Equipment Design; Humans; Phantoms, Imaging; Radiation Dosage; Radiometry; Reproducibility of Results; Software; Tomography Scanners, X-Ray Computed; Tomography, X-Ray Computed
