Hospital art

Four pictures on the walls of the corridor leading to WGH out patients clinics. Alas, no information about these art works, are they paintings, or the capture of aspects of the body, or pure abstract art.
One of the displays from years ago that had a big impact on me was black and white x-rays of plants, a daffodil has remained in my head.
Perhaps this is cheating for the Thursday challenge of painterly abstracts, if that is the case, I am happy to accept further advice