The go-ahead has been given for further research into a procedure which could relieve symptoms for some people who have multiple sclerosis.
The procedure, called percutaneous venoplasty, aims to improve blood flow from the brain by using a small inflatable balloon or stent to widen narrowed veins in the neck which carry oxygen-depleted blood.
Multiple sclerosis is the most common disabling neurological condition affecting young adults. Around 100,000 people in the UK have MS.
The National Institute for Health and Clinical Excellence (Nice) is proposing in its draft guidance that the procedure should be used in the context of research only, so further evidence on its safety and clinical efficacy can be developed.
This is in the UK.
Lots of research getting underway everywhere.