Intro Unit 6 Lesson 3 Review

What does an electrocardiogram (ECG) measure?

• The blood pressure in the arteries

• The electrical activity of the heart

• The oxygen level in the blood

• The heart rate

How is a stress test different from a regular ECG?

• A stress test measures blood sugar levels

• A stress test is performed while the patient is sleeping

• A stress test is an ECG obtained while the patient is exercising or after medication

• A stress test uses X-rays to visualize the heart

What technology does echocardiography use to evaluate the heart?

• X-rays

• Magnetic fields

• Ultra-high-frequency sound waves

• Radioactive substances

What was computerized tomography formerly known as?

• MRI

• PET

• CAT (computerized axial tomography)

• Ultrasound

What is the main difference between magnetic resonance imaging (MRI) and X-rays?

• MRI uses radiation, while X-rays use magnetic forces

• MRI uses a computer and magnetic forces, whereas X-rays use radiation

• MRI is used for bone imaging, while X-rays are used for soft tissue

• MRI is faster than X-rays

What does a PET scan detect in the body?

• Electrical activity of the heart

• Blood flow in the brain

• A radioactive substance injected into a patient

• Bone density

Which of the following is NOT a use of echocardiography?

• Evaluating heart structure

• Measuring electrical activity of the heart

• Assessing heart function

• Detecting heart valve issues

Which imaging technique uses radiation to create images of the body?

• MRI

• Echocardiography

• X-rays

• Ultrasound

What is the primary purpose of a stress test?

• To measure lung capacity

• To evaluate heart function under stress

• To detect bone fractures

• To assess kidney function

Which of the following is a characteristic of MRI?

• Uses ultra-high-frequency sound waves

• Involves injecting a radioactive substance

• Utilizes magnetic forces and a computer

• Requires exposure to radiation