EuroSafe Imaging 2020
Performed at one institution, Diagnostic or prognostic study, Retrospective, Pathology, Dosimetric comparison, Developmental disease, Radiation safety, Dosimetry, Diagnostic procedure, CT, Paediatric, Neuroradiology brain, Head and neck, Action 7 - Radiation protection of children
M. Gentile, A. GUIDI, P. Polidori, R. Calandrelli, A. Fidanzio, L. Bonomo, C. Colosimo
Conclusion and recommendations
The CT quality analysis does not show important and significant differences between all scan series: the image quality parameters guarantee the expected levels defined on the Italian regulatory (D.Lvo 187/0). The reduction of kV and mA, as expected, causes an increase in noise which is however attenuated by the use of iterative reconstruction.
The recommended protocol is schematized in table 3.
The use of the iterative reconstruction technique, such as the Adaptive Statistical Iterative Reconstruction (ASIR) or SAFIRE (Sinogram affirmed Iterative Reconstruction), is mandatory.
The use of lens protection systems (ODM, Xcare) and the use of dose modulation systems (e.g. Auto mA, smartmA, Care Dose 4D) are highly recommended.
It may be appropriate to vary the rotation speed from 1 second to 0.6 seconds to obtain a reduction in the dose and a faster execution of the examination.
Low-dose CT protocol allows accurate identification of both "major" and "minor" skull base suture synostosis and it represents the "gold standard" for the diagnosis of craniostenosis and for planning the proper surgical approach. Obviously, the protocol is indicative and the parameters must be adapted to the CT System in use and the diagnostic question. For the study of the cerebral parenchyma, a standard head CT protocol in axial mode is generally used.