Body Imaging by Mary McLean-Hely

What is the primary type of energy used in X-ray imaging?

• Sound waves

• Magnetic fields

• Ionizing radiation

• Radiofrequency waves

MRI technology primarily uses which of the following to generate images?

• X-rays

• Magnetic fields and radio waves

• High-frequency sound waves

• Gamma rays

Which of the following best describes the use of ultrasound in body imaging?

• It uses ionizing radiation to view bones.

• It uses magnetic fields to view soft tissues.

• It uses high-frequency sound waves to view internal organs.

• It uses gamma rays to detect cancer.

What is a key advantage of using MRI over X-rays?

• MRI can use ionizing radiation safely.

• MRI provides better images of soft tissues.

• MRI is faster and cheaper.

• MRI uses sound waves, which are safer.

During a CT scan, what does the machine do?

• Stays still while the patient moves through a tunnel.

• Moves around the patient's body in a circle.

• Uses sound waves to create images.

• Generates a magnetic field around the patient.

What is the primary purpose of a PET scan in medical imaging?

• To measure bone density

• To detect the presence of foreign objects in the body

• To observe the metabolic process in tissues

• To create images of the body using sound waves

Which imaging technique is considered safest for pregnant women?

• X-ray imaging

• MRI

• Ultrasound

• CT scan

What contrast agents are sometimes used in MRI to improve the clarity of the images?

• Iodine-based dyes

• Gadolinium-based dyes

• Barium sulfate

• Radioactive isotopes

How does the principle of echolocation relate to ultrasound imaging?

• It uses magnetic fields to locate objects.

• It uses X-rays to create echoes.

• It uses sound waves to create images based on echoes received.

• It involves the use of gamma rays to detect motion.

What is a common use of CT scans in emergency medicine?

• To measure bone density

• To detect brain injuries

• To perform prenatal check-ups

• To observe the metabolic process in tissues