上个月，一名12岁黑人男童把玩玩具枪，结果被赶到现场的警察开枪打死。同一月份，一名没有持械的黑人男子和女友经过布鲁克林一栋公寓的昏暗楼梯口时，黑人男子被警员开枪击毙。
[Abstract] Objective To analyze and pare the diagnosis value of MRI and dual-source CT in knee-joint trauma. Methods The images about 141 patients with knee-joint trauma treated from January 2011 to May 2014 in our hospital were retrospectively analyzed. According to the operation results， the detection accuracy based on two methods was pared. Results The detection rate of knee-joint trauma based on dual-source CT and MRI was 70.9% and 94.3%. The rate of MRI was higher than that of CT （P