A radiographic technique chart recommends 4 milliampere-seconds (mAs) and 68 kilovoltage peak (kVp) at 72 inches for a certain procedure. How will the receptor exposure be affected if the radiograph is performed using the recommended exposure technique but at 60 inches?

When a radiograph is taken at a shorter distance, such as 60 inches compared to the recommended 72 inches, the receptor exposure increases due to the inverse square law. This law states that the intensity of radiation exposure is inversely proportional to the square of the distance from the source of radiation.

Therefore, when the distance is reduced from 72 inches to 60 inches, the receptor exposure increases because the radiation is more concentrated at the closer distance. This increase occurs even though the milliampere-seconds (mAs) and kilovoltage peak (kVp) remain constant. The shorter distance means that the radiation has less area over which to spread, resulting in a higher intensity of exposure on the imaging receptor.

As a result, the correct answer reflects that receptor exposure will indeed be higher than necessary when performing the procedure at 60 inches instead of the recommended 72 inches.