ARRT Mammography Boards Study Guide with correct answers

What is the frequency of ACR Accredidation? CORRECT ANSWER Every 3 yrs. The material used for the exit port of the mammography tube us necessary because CORRECT ANSWER Regular glass would harden the emerging beam The intensity of the x-ray beam from the cathode side of the tube is generally higher because CORRECT ANSWER the heel effect causes variation in the intensity of the x-ray beam The design of the lip of the compression paddle (height + angle along the chest wall) affects all of the following EXECPT CORRECT ANSWER it ensures higher compression of the anterior breast tissue The PRIMARY goal of compression is to CORRECT ANSWER allow uniform penetration of structures within the breast What features of the high-transmission cellular (HTC) grid allow these grids to maintain equal or less radiation dose to the patient compared with linear grids? CORRECT ANSWER They have copper as the strips and air as the interspace material The gird ratio can vary in modern mammography units. A common grid ratio used is CORRECT ANSWER 5:1 The chest wall edge of the compression paddle should be aligned just beyond the chest wall edge of the detector to CORRECT ANSWER avoid projecting the chest wall edge of the paddle on the mammogram