Which type of PID significantly reduces exposure to the patient?

Rectangular collimation is designed to limit the size and shape of the x-ray beam to match the area of interest, which significantly reduces the amount of radiation exposure to the patient. In dental radiography, using rectangular collimation can result in a decreased dose because it minimizes the amount of surrounding tissue that is exposed to radiation during an x-ray procedure. This focused approach is especially beneficial since it targets only the necessary area, while cylindrical and conical collimation methods may expose more tissues than required due to their shape and coverage area. Rectangular collimation is therefore considered the most effective in terms of protecting patients from unnecessary radiation exposure.