Congress:
EuroSafe Imaging 2019
Keywords:
Action 8 - Radiation protection training and learning material, Action 10 - EuroSafe Imaging Stars, Neuroradiology brain, Radioprotection / Radiation dose, Radiographers, CT, Experimental investigations, Radiation safety, Dosimetric comparison, Education and training
Authors:
M. Gentile, C. Colosimo, L. Bonomo, S. Gaudino, G. Marziali, A. Mazzini, A. Fidanzio, A. GUIDI, A. Morasca
DOI:
10.26044/esi2019/ESI-0112
Description of activity and work performed
Data have been collected from a clinical CT structured report proprietary software,
installed in “Fondazione Policlinico Universitario A.
Gemelli IRCCS Università Cattolica del Sacro Cuore",
Rome,
detecting diagnostic tests performed in the last 12 months on a single CT scanner,
and splitting examinations held with two different clinical protocols: “head CT head first”,
“head CT feet first”.
Too low CTDIvol values (probably due to clinical routine inaccuracies) have been removed from the dataset,
and a reasonable homogeneity of head dimension between the patients in the statistical sample has been assumed.
In figures 1 and 2,
mean CTDIvol data versus global shift from the isocenter,
both for head first and feet first clinical protocols,
are displayed.
According to this dataset,
none of the expected dependence between CTDI and isocenter shift has been detected[2]; in figures 3 to 6,
isocenter shifts along X and Y direction are presented for both clinical settings.
At the same time,
CTDI values have been measured both in a well-centered and a bad-centered phantom layout (figure 8); in this way,
it has been evidenced the possibility of an existing correlation between the aforesaid parameters.