The Aga Khan University Hospital, Pakistan > Health Services > Diagnostic Services > Cardiopulmonary Diagnostic Services > Nuclear Cardiology
​Nuclear Cardiology​

Nuclear cardiology is a special type of X-ray procedure that uses very small amounts of radioactive material to diagnose heart disease. It is safe, and the amount of radiation exposure is no greater than a common chest X-ray. It is highly effective in determining the degree of blood flow to the heart muscle and in detecting the presence of arterial blockages in the heart. This test helps a doctor to determine the extent of the risk of heart disease and the best way to manage it. The entire test takes about three to four hours. 

  • An advance appointment must be made. 

  • Bring your doctor's prescription to the appointment. 

  • Your doctor may ask you to stop taking certain medications (beta-blockers, calcium channel blockers for 24 hours and nitrates for 12 hours) before the test. 

  • Avoid drinking caffeinated drinks 12 hours before the test.

  • Do not eat or drink anything 4 hours before the test.  If you are diabetic, do not eat or drink anything 2 hours before the test. 

  • You may be advised to drink an increased amount of water for 24 hours after the test.

  • Do not come into contact with pregnant women and children (under 12 years) for at least 24 hours after the test.​​