TY - GEN AU - Chan,Charles T P AU - Fung,Karl K L TI - Dose Optimization in Lumbar Spine Radiographic Examination by Air Gap Method at CR and DR Systems: A Phantom Study SN - 1876-7982 PY - 2015/// PB - Journal of medical imaging and radiation sciences N1 - Publication Type: Journal Article UR - https://doi.org/10.1016/j.jmir.2014.08.003 ER -