GE Healthcare Centricity PACS 4.0 Server has a default password of (1) nasro for the nasro (ReadOnly) user and (2) nasrw for the nasrw (Read/Write) user, which has unspecified impact and attack vectors.
https://twitter.com/digitalbond/status/619250429751222277
https://ics-cert.us-cert.gov/advisories/ICSMA-18-037-02
http://www.forbes.com/sites/thomasbrewster/2015/07/10/vulnerable-breasts/