My current coding project is developing a utility to help medical researchers upload batches of imagery, mostly CT scans, to our instance of a piece of repository software called XNAT. The team who maintain it already have some Python command-line utilities to inspect, upload and download things one at a time: I'm extending it with some code to traverse a filesystem, build a spreadsheet of files which match some sort of pattern, allow the user to check that the matching's done its job properly, and then upload the files in batches.
To get myself started I needed some examples of DICOM files, and that's when I discovered that there are quite a few sources of test DICOMS on the internet, which is very helpful, but also a bit weird when I inspected one of them and found myself looking at a section through someone's torso.
I hope that there was some kind of legitimate ethics sign-off on that.