Stress Thallium

This is a type of nuclear scanning test or myocardial perfusion (mi”o-KAR’de-al per-FU’zhun) imaging test. It shows how well blood flows to the heart muscle. It’s usually done along with an exercise stress test on a treadmill or bicycle.

The thallium stress test is useful to determine:

  • Extent of a coronary artery blockage
  • Prognosis of patients who’ve suffered a heart attack
  • Effectiveness of cardiac procedures done to improve circulation in coronary arteries
  • Cause(s) of chest pain
  • Level of exercise that a patient can safely perform