Stress Test with Cardiolite (Myoview) Imaging

Explanation of the Test

The test will begin in the Nuclear Medicine Department at Saint Joseph Hospital where a resting Cardiolite study will be performed. An intravenous line (I.V.) will be started in the arm and a radioisotope called CARDIOLITE will be injected. You will wait 60 minutes for the Cardiolite to take effect before lying on a cart and having pictures taken of your heart. This procedure will take about 60 minutes to perform and will trace the Cardiolite as it moves through the heart. If the heart is not receiving enough blood flow, it will show up on the pictures.

After this procedure, a member of the Nuclear Medicine staff will bring you to the Heart Station for the exercise portion of the test, which is performed to observe the heart's reaction to increased activity in a controlled environment. Ten small pads (electrodes) will be placed on your chest to monitor your heart (chest hair will be shaved if necessary). You will then walk on a moving belt at a brisk pace while being supervised by trained personnel for about 3-12 minutes. Every three minutes, the treadmill will increase in speed and the incline will get steeper, which will put more demand on your heart and cause it to beat faster. You will not be forced to do more activity than you safely can, although you may feel tired. Your electrocardiogram (ECG) and blood pressure will be measured throughout the test. Cardiolite will be injected one minute before the end of the exercise portion of the test, in preparation for the second set of pictures.

After cooling down for about 5-10 minutes, the ECG connections will be removed and you will be taken back to Nuclear Medicine. Your second set of pictures will be taken at this time, which will take about 30 minutes. The first set of pictures shows how your heart performs at rest while the second set shows how your heart looks during exercise.


  • A light meal of juice and toast is recommended prior to the test and will help improve the quality of the pictures.
  • Wear comfortable clothing and walking shoes (no high heels).
  • Do not smoke or have caffeine three hours prior to the test.
  • Bring a list of your current medications.
  • You should ask your doctor whether you should take your regular medications prior to the test.

General Information

  • The test takes about four hours.
  • Any further questions about the test may be answered by your physician.
  • Results will be sent to your doctor within 24 hours from when the test is performed.
  • If you are unable to keep your appointment or will be late, please call the Heart Station at 773-665-3187 as far in advance as possible.
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