A.相等 B.前者較后者大 C.前者較后者小 D.前者1mm,后者2mm E.前者0.25mm,后者0.125mm
A.3~18HU提示為液體 B.-1000HU提示為空氣 C.20~80HU提示為脂肪 D.80~300HU提示為鈣化 E.>400HU提示為骨骼
A.60~100HU B.20~60HU C.0~20HU D.-20~-120HU E.<-200HU