Hydrocephalus is a condition where there is an abnormal accumulation of fluid on the brain. Patients with hydrocephalus often have a tube or device called a shunt inserted to drain excess fluid from their brain. It is important to detect a shunt that is not working properly, as a build up of pressure can lead to neurological problems, blindness, seizures and death. Of the nearly 5,000 shunt operations performed each year in the UK, around half are to correct problems with a previously implanted shunt.

At present, additional surgery is required to check whether a shunt is working properly. The aim of this project is to test a new painless technique to measure pressure inside the head without the need for surgery. The new procedure could be repeated as often as required without the risk of infection or discomfort to the patient. This technique could prevent the development of disability in patients, especially children, and would be a major advance in the management of hydrocephalus.