Central to minimizing the radiation dose to oneself and to others are the cardinal principles of ______, ______, and ______.

Central to minimizing the radiation dose to oneself and to others are the cardinal principles of ______, ______, and ______.

• A. Shielding, Time, Distance
• B. Time, Dose, Calibration
• C. Shielding, Exposure, Positioning
• D. Distance, Rotation, Shielding

Answer: (A)

The three cardinal methods to minimize radiation dose are Shielding, Time, and Distance. Reducing exposure time cuts the dose in direct proportion to how long you’re exposed. Increasing your distance from the source makes a big difference because dose falls off rapidly with distance (the inverse square law). Shielding provides a barrier that absorbs or blocks radiation before it reaches you, further lowering the dose. In this context, the correct trio is Shielding, Time, and Distance. The other options mix in terms like Dose, Calibration, Exposure, Positioning, or Rotation, which are not the standard three dose-reduction principles used to protect people during imaging.

The three cardinal methods to minimize radiation dose are Shielding, Time, and Distance. Reducing exposure time cuts the dose in direct proportion to how long you’re exposed. Increasing your distance from the source makes a big difference because dose falls off rapidly with distance (the inverse square law). Shielding provides a barrier that absorbs or blocks radiation before it reaches you, further lowering the dose.

In this context, the correct trio is Shielding, Time, and Distance. The other options mix in terms like Dose, Calibration, Exposure, Positioning, or Rotation, which are not the standard three dose-reduction principles used to protect people during imaging.