The process of insertion of a thin tube, also known as catheter, is called cardiac catheterization. This is an important procedure that is done in order to check the heart of the person. Those who may also want to know if their heart is functioning well can undergo this important procedure. Those patients who are diagnosed with heart problems or have some heart issues can also use this procedure in order to see what actually cause the problem. Another important procedure in order to check your heart is MRI exam.