【名词&注释】
肾结核(renal tuberculosis)、重复性(repeatability)、肾积水(hydronephrosis)、低密度灶(low-density focus)、密度分辨力(density resolution)、低对比度分辨力(low contrast resolution)
[多选题]低对比度分辨力(low contrast resolution)又称密度分辨力(density resolution),其表示单位有
A. mGy
B. kV
C. mAs
D. mm
E. %