title: Reply letter.
authors: Institute of Diagnostic Radiology, Department of Medical and Biological Sciences, University of Udine, Azienda Ospedaliero-Universitaria Santa Maria della Misericordia, via Colugna, 50-33100 Udine, Italy. Electronic address: rgirometti@sirm.org.
authors: Rossano
authors: R
authors: Girometti
authors: Radiodiagnostica d'Urgenza ed Emergenza, Azienda Ospedaliero-Universitaria Santa Maria della Misericordia, Piazzale S. M. della Misericordia, 15-33100 Udine, Italy. Electronic address: serepul@libero.it.
authors: Serena
authors: S
authors: Pullini
authors: Department of Oncological Radiation Therapy, Azienda Ospedaliero, Universitaria Santa Maria della Misericordia, Piazzale S. M. della Misericordia, 15-33100 Udine, Italy. Electronic address: marco.signor@asuiud.sanita.fvg.it.
authors: Marco Andrea
authors: MA
authors: Signor
authors: Institute of Diagnostic Radiology, Department of Medical and Biological Sciences, University of Udine, Azienda Ospedaliero-Universitaria Santa Maria della Misericordia, via Colugna, 50-33100 Udine, Italy. Electronic address: chiara.zuiani@uniud.it.
authors: Chiara
authors: C
authors: Zuiani