Received: 20 February 2020
Accepted: 16 April 2020
First Online: 19 May 2020
Ethics approval and consent to participate
: Ethical approval to report this retrospective case series was requested and waived by the hospital board. Informed consent was acquired from every patient to perform a clinical CEUS study. No written informed consent was obtained to report each image in this study, as all images are anonymised.
: Informed written consent was not acquired from every patient, as this is a retrospective review of many different images.
: PS has received lecture fees from Bracco, Siemens, Samsung, Philips and Hitachi. GTY has received lecture fees from Siemens and Bracco. MES has received lecture fees from Bracco. DYH has received lecture fees from Bracco. The rest of the authors have no conflict of interest regarding the publication of this manuscript.