A quantity employed in radiological sciences, this measurement represents the absorbed dose multiplied by the area of the radiation beam. It is typically expressed in Gray-centimeters squared (Gycm) or Roentgen-centimeters squared (Rcm). As an illustration, if a patient receives a dose of 0.5 mGy over an area of 200 cm, the calculated value would be 100 mGycm.
This value serves as a surrogate for the total energy imparted to the patient during an X-ray examination. Monitoring this parameter is crucial for optimizing imaging protocols, minimizing radiation exposure, and contributing to patient safety. Historically, its measurement has evolved alongside advancements in radiation detection technology, becoming an integral part of quality assurance programs in medical imaging.
