<prompt> Which of the following facilitates comparison between different radiations?RadRemQuality factor exposureRoentgen  <response>: EQUIVALENT RADIATION-WEIGHTED DOSE:The equivalent dose HT is used to compare the biologic effects of different types of radiation on a tissue or organ. Particulate types of radiation have a high LET and are more damaging to tissue than radiation with low LET, such as x rays. This relative biologic effectiveness of different types of radiation is called the radiation-weighting factor WR.The unit of equivalent dose is the sievert Sv. For diagnostic x-ray examinations, 1 Sv equals 1 Gy. The traditional unit of equivalent dose is the rem roentgen equivalent man; 1 Sv equals 100 rem.Oral Radiology, Principles and Interpretation Stuart C. White, Michael J. Pharoah - 7th ed - pg - 15 