Treadmill test or cardiac stress test is a test to measure heart s capacity to bear external stress in form of exercise. It is one of the most commonly done tests in controlled clinical settings to diagnose ischemic heart disease and determine prognosis after myocardial infarction.

2D Echocardiography, also known as ultrasound of heart, is a test used to assess structure and function of heart.  It is one of the most used noninvasive tests for heart these days along with ECG. There is no pre preparation needed.