<prompt> Which of the following best estimates the amount of radiation delivered to an organ in the radiation field?Absorbed doseEquivalent doseEffective doseExposure dose  <response>: Absorbed dose refers to the quantity of total energy per unit mass of matter that is absorbed from ionizing radiation. Unit for absorbed dose is grayGy. Ref: Radiation Protection in Educational Institutions By National Council on Radiation Protection and Measurements; Operational Health Physics, National Council on Radiation Protection and Measurements, Page 12, 13 