Stroke

How is a stroke diagnosed?

A number of tests are done, including:

• Brain scan
  

  Usually a CT scan is performed. Sometimes an MRI scan is needed. The scan will help the doctor confirm the type of stroke and its location.

• Blood tests
  

  To look for underlying diseases such as diabetes mellitus and high cholesterol

• Chest X-ray, electrocardiogram (ECG)
  

  For information on heart diseases
  

• Ultrasound
  

  Studies of the blood vessels in the neck and skull (carotid ultrasound, transcranial Doppler), and of the heart (echocardiogram): To detect conditions that may be predisposed to stroke.

• Angiogram
  

  A small tube is inserted into the groin and passed along the blood vessel till it reaches the brain. A dye is injected and X-ray pictures are taken. These provide information on the location and severity of vessel blockage or bleed.