Final answer:
An electrocardiogram (ECG) is used to record the electrical impulses of the heart, while an echocardiogram is used to produce images of the heart.
Step-by-step explanation:
An electrocardiogram (ECG) is used to record the electrical impulses of the heart, while an echocardiogram is used to produce images of the heart.
The ECG measures the electrical activity of the heart and can help diagnose irregular heart function by recording the voltages created by the wave of depolarization and subsequent repolarization in the heart.
On the other hand, an echocardiogram uses ultrasound technology to create images of the heart, allowing doctors to assess the structure and function of the heart.