When healthy volunteers are scanned as part of a research project, unexpected findings, with uncertain implications, can be thrown up.

Joanna Wardlaw, professor of applied neuroimaging and honorary consultant neuroradiologist at the University of Edinburgh, joins us to discuss how her group deals with these incidental findings, and what volunteers and patients want to happen when they are found.

Read the full analysis:

http://www.bmj.com/content/351/bmj.h5190