Participants able to communicate with staff and safely comply with the study procedures.
Participants to provide informed written consent.
You may not be if
Participants with any MRI contraindications including inability to lie flat in MRI scanner, claustrophobia and no foreign bodies, medical devices or other items which are considered an MRI contraindication.
Geographically remote patients unable to agree to imaging schedule.
Participants with illness or condition which means they cannot understand the requirements of the study.
Participants with cardiac or pulmonary disease that are unable to tolerate the flow of oxygen delivered via a mask.
Participants who have previously been treated with bleomycin (a chemotherapy used to treat some cancers including Hodgkin lymphoma and germ cell tumours).
Participants with contraindications to gadolinium-based contrast agent
