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Cerebral angiography

This page explains about a cerebral angiography and what to expect when your child comes to Great Ormond Street Hospital (GOSH) to have this procedure. Cerebral angiography is a test that is carried out to study the blood vessels in the brain and neck. It is carried out in the department of radiology by a neuroradiologist, a doctor with specialised training in taking pictures the brain and nervous system.


Cerebrospinal fluid (CSF) is a watery liquid that surrounds the brain and spinal cord, acting as a ‘cushion’. It also supplies nutrients to the brain. Hydrocephalus occurs when either too much CSF is produced (very rare), or when it is stopped from circulating or being re-absorbed. The CSF builds up within the ventricles (cavities) of the brain resulting in increased pressure on the brain. In babies, this also causes the head to enlarge


An encephalocele is a rare congenital (present at birth) type of neural tube defect where part of the skull has not formed properly so a portion of brain tissue and associated structures are outside the skull. The protruding sac may be covered with skin or it may be covered with a thin membrane. This information sheet from Great Ormond Street Hospital (GOSH) explains the causes, symptoms and treatment of encephalocele and where to get help. 


Aspirin is a medicine commonly used to relieve pain, reduce swelling and reduce a
high temperature. It also makes the blood less sticky so it is less likely to form a clot. This information sheet from Great Ormond Street Hospital describes aspirin, how it is given and some of its possible side effects.

Central venous access devices (long term)

The purpose of this guideline is to provide guidance on the care and use of long term Central Venous Access Devices (CVAD) including advice on dealing with any problems encountered. For the purpose of this guideline, devices that are required to remain insitu greater than a month will be considered a long term CVAD.

Note: While this guideline refers to the 'child' throughout, all activities are applicable to young people

Reveal LINQ™ recording devices

Reveal LINQ™ devices are heart monitors about the size of a memory stick that continually record your heart’s activity over long periods of time. This page from Great Ormond Street Hospital (GOSH) explains about your Reveal LINQ™ recording device and what to expect when you come to GOSH to have one fitted.

Gastrostomy management

A gastrostomy is a feeding tube that is inserted directly into the stomach either surgically under direct vision (open or laproscopic), endoscopically (with a camera), or radiologically (x-ray guidance). A gastrostomy tube allows the delivery of supplemental nutrition and medications directly into the stomach. It also provides a mechanism to drain gastric contents if required. In order for gastrostomy feeding to be successful the child or young person must have a functioning gastrointestinal tract.

Safa and Marwa

Separating conjoined twins

Great Ormond Street Hospital is internationally renowned for being one of only a few hospitals in the world to have the infrastructure, facilities and team of experts to take on one of medicine’s most challenging conditions – separating twins who are conjoined.