I am interested in cardiac and vascular ultrasound. How hard is the exam?

Very easy. It is very easy only requires that you lay on the table and have a probe touching the area of the exam.

Related Questions

Please advise what is the difference between general and cardiac vascular ultrasound?

Location. Ultrasound uses high frequency sound waves to create images of tissues from the reflected waves. It's like sonar, but of your body. Cardiac ultrasound is just directed at the structures of the heart. It is often also used to measure blood flow in the heart, using similar principles. Read more...