Diagnosing  an aneurysm 

Aortic  aneurysm

Abdominal aortic aneurysms are often diagnosed  during a routine physical examination when a GP notices  the distinctive vibrating sensation  in the abdomen.

A diagnosis  can be confirmed using  an ultrasound scan. Ultrasounds can also determine the size  of the aneurysm, which is an important factor in deciding on a course of treatment.

Intracranial aneurysm 

A brain aneurysm can  be detected using a special kind  of X-ray that is called  an angiogram or arteriogram. To highlight  the aneurysm, a dye is injected into  the bloodstream. The blood  in the vessels shows up  on the film as white columns. If a blood vessel is swollen due to an aneurysm, the dye in  the blood will pass into it  and the X-ray will show  the swelling. 

Computer topography (CT) scans  and magnetic resonance imaging (MRI) scans can also be used  to produce detailed images of the structure of blood vessels inside  the brain. 

Screening 

In  the spring of 2009, the NHS launched a screening programme for aortic aneurysms. The programme is designed to offer all men who are 65 years of age or over  an ultrasound scan for aortic aneurysms. 

Over  the next few years,  the screening programme will  be introduced gradually across England. The first areas  to be included are south Manchester, Gloucestershire, Leicester, West Sussex, South Devon, and south-west London.  The programme is expected  to cover the whole  of England by March 2013. Men should receive  an invitation in the year they turn 65 years old. 

If you do not live  in a part  of the country that  is covered by  the screening programme, you can still request  an ultrasound scan for  aortic aneurysm. Contact your GP for more information. 

There is currently no screening programme for intracranial aneurysms. 

It is recommended that you undergo screening for intracranial aneurysms every five years if you have two or more close (first-degree) blood relatives, such as your mother, father, brother, aunt, or uncle (but not your grandmother or grandfather) who have experienced a subarachnoid haemorrhage. Your GP can refer you to a neurologist for further assessment.