Medical Imaging Protection

Which of the following imaging modalities uses ionizing radiation?

• MRI

• Ultrasound

• CT scan

• Optical imaging

The primary aim of medical imaging protection is to:

• Reduce cost of imaging

• Eliminate all imaging procedures

• Minimize unnecessary radiation exposure

• Improve image contrast only

The scope of medical imaging protection includes:

• Equipment maintenance only

• Reducing radiation risks for patients and staff

• Performing more high-dose scans

• Improving speed of imaging

Which of the following modalities does not use ionizing radiation?

• X-ray

• MRI

• CT

• Fluoroscopy

Ionizing radiation in medical imaging mainly comes from:

• Sound waves

• Magnetic fields

• X-rays and gamma rays

• Radio waves

Deterministic effects of radiation:

• Have a threshold dose

• Are always cancer

• Occur randomly without dose dependency

• Are reversible in all cases

Stochastic effects differ from deterministic effects because they:

• Have no threshold

• Cause immediate tissue damage

• Are limited to skin burns

• Are always visible in imaging

Which tissue is most radiosensitive?

• Nerve tissue

• Bone marrow

• Muscle tissue

• Cartilage

Radiation-induced cancers are considered:

• Deterministic effects

• Stochastic effects

• Acute effects

• Temporary effects

The severity of deterministic effects:

• Increases with dose

• Is independent of dose

• Depends only on radiation type

• Cannot be prevented by shielding