IDUG would like to welcome you to our 2021 dosimetry course running from 25th to 28th May. This training is normally run as a one day session at the Spring BNMS meeting. This year we are running it virtually as four short lunchtime sessions from 12-2pm each day. Wholebody, organ and voxel dosimetry will be covered in presentations and workshops, as well as an interactive uncertainty session.