A CT Scan stands for Computed Tomography Scan. It is also known as a CAT (Computer Axial Tomography) Scan. It is a medical imaging method that employs tomography.
Echocardiogram is a test in which ultrasound is used to examine the heart. The equipment is far superior to that used by fishermen.
Electrocardiography (ECG or EKG) is the recording of the electrical activity of the heart over time via skin electrodes.It is a noninvasive recording produced by an electrocardiograph.
Treadmill Test (TMT) is done to find the stress on the heart. On the machine the patient walks and the readings are taken. Treadmill Test machine from GE Marquette (USA) for stress test of heart.