paranasal sinuses imaging with CT has the potential to replace completely plain X-rays when the low-dose imaging is used. The thin filtration with the reduction of the current setting could drop down the dose up dose-length product (DLP) to values around 30 mGy.cm, even the ultra-low-dose imaging could decrease the values further below 10 mGy.cm, but the resolution of the bony structures is decreasing.
the images reppresent the finding ot the air-fluid levels with foamy exsudate in maxillary and frontal sinuses is the important sign of the acute sinusitis, the actuall DLP reached 31 mGy.cm, CTDIvol 2,61 mGy, exposition Sn100kV, image quality (IQ level) 20, eff. mAs 155
Naeotom Alpha Prime, University Hospital Pilsen, Czechia
