Devices that acquire digital medical images using radiation (DR; Digital Radiography) are widely used in medical
institutions to obtain information necessary for patient diagnosis, and the frequency of use is gradually
increasing. By selecting 3 hospitals that perform more than 50 digital X-ray medical imaging tests per day, and
by installing a glass dosimeter for environmental measurement on the outside of the examination room protection
wall, entrance door, and patient viewing window, the leakage radiation dose was measured for one month
from May 16, 2021 to June 21, 2021, then it was analyzed by converting into a 3-month cumulative dose. The
cumulative dose equivalent of 1 cm in the glass dosimeter for 3 months outside the shielding wall at the
entrance of the digital medical image acquisition radiation generating device examination room was 0.96 mSv,
and the average value was 0.18 mSv. In addition, the cumulative 1 cm dose equivalent value of the glass dosimeter
for 3 months outside the shielding wall on the control room side showed a maximum of 3.03 mSv and an
average of 0.41 mSv. The glass dosimeter cumulative dose 1cm dose equivalent value was up to 8.31 mSv and
averaged 2 . 09 mSv for 3 months outside the door o f the patient waiting room of the digital medical image
acquisition radiation generating device examination room. In addition, the glass dosimeter cumulative dose
1cm dose equivalent value for 3 months outside the control room door showed a maximum of 14.04 mSv and
an average of 3.84 mSv. These research results are expected to be widely used in setting measurement methods
and regulatory standards for environmental radiation safety management of medical radiation generators, and
continuous research management at the national level is suggested.