[en] To measure the mammographic radiation dose different mammographic units and views as compared to the American College of Radiology Recommendations. We measured the kVp, entrance dose and average glandular dose for three mammographic units (two Gitto Hi-Tech Mammography, IMS, Bologna, Italy, one Senographe 500 T, GE medical systems, Milwaukee, Wis., U.S.A.) in the 26-33 kV range. Dose measurement for magnification compression view was obtained for two machines and dose measurement for stereotactic views was obtained for one machine. For each machine, the entrance dose was within the range of 3.400-6.077, 4.383-11.403, 3.790-6.497 mSv, respectively, and the average glandular dose was within the range of 0.74-1.96 mGy. The entrance and average glandular dose were 17.14, 18.00 mSv, and 3.73, 3.92 mGy for the magnification compression view and 2.41-2.92 mSv, 0.50-0.61 mGy for stereotactic views. The error rang of kVp was∼11.3∼+1.9%. The entrance dose and average glandular dose were above the limit of the American College of Radiology Recommendations. It is necessary to develop a Korean standard on the basis of the above data