Compliance with ethical standards
Conflicts of interest: None to declare.
Human and animal rights: This article does not contain any study with human and animals performed by any of the authors.
Informed consent: Informed consent was signed.
Contributors DS and MS: acquisition of data, literature review, clinical and imaging data review and final manuscript writing. AIR, MC, SAD, SAS, MM, AP, AM, ER and ML: imaging data review, and final manuscript writing.