Cardiac Risk Assessment The following tests detect any inherent heart problems, such as irregular heart rhythm, clogged arteries, and damage to the heart muscle Resting ECG Is a simple, painless and non-invasive test performed in your suite whereby small discs or electrodes are attached to your chest. The ECG will help assess the electrical activity of your heart as it contracts and rests. Treadmill Stress Test Thallium Scan This test is recommended for individuals above 50 years. It consists of taking pictures of your heart at two different timings while exercising, and while at rest. The thallium test gives information about the blood supply to your heart muscle.