What is the exposure technique system that doubles or halves milliampere seconds (mAs) for every 5 centimeters of thickness?

The correct answer is the fixed kilovoltage peak (kVp) system. This system is designed to maintain a constant kilovoltage setting while adjusting the milliampere seconds (mAs) based on the thickness of the body part being imaged. The principle behind this technique is that for every 5 centimeters of change in thickness, the required mAs can be doubled or halved to provide optimal image quality while ensuring adequate exposure.

In a fixed kVp system, a specific kVp is selected based on the type of examination and the thickness of the area being imaged. The mAs is then adjusted accordingly, using the doubling or halving method every 5 centimeters to compensate for variations in tissue density and thickness. This approach enhances the efficiency of the imaging process and helps achieve consistent results across different patient sizes.

While other options may involve different approaches to exposure techniques, they do not specifically adhere to the protocol of doubling or halving mAs based on every 5 centimeters of thickness, which is a distinctive characteristic of the fixed kVp system.