Messer H D, Cerza P F
Neuroradiology. 1976;12(3):121-9. doi: 10.1007/BF00341856.
Bullets fired from hand guns are often partially or fully jacketed with copper - a fact that can usually be recognized on radiographs. The copper content of the metallic foreign body (MFB) appears to be more toxic than unjacketed lead and sometimes leads to migration of the MFB through brain tissue. Therefore, it appears wise to attempt to recognize and remove copper containing MFBs when they lie in contact with the central nervous system. Plain lead missiles and those partially clad with copper often leave traces of lead along their paths, while those that are completely copper clad do not. Partially clad missiles tend to show some separation of lead and copper - revealing two differing metallic densities on the radiographs.
手枪发射的子弹通常部分或全部包裹着铜——这一事实通常可以在X光片上识别出来。金属异物（MFB）中的铜含量似乎比未包裹的铅更具毒性，有时会导致MFB在脑组织中移动。因此，当含铜的MFB与中枢神经系统接触时，试图识别并取出它们似乎是明智的。普通铅质导弹以及部分包裹铜的导弹通常会在其路径上留下铅的痕迹，而完全包裹铜的导弹则不会。部分包裹的导弹往往会显示出铅和铜的一些分离——在X光片上呈现出两种不同的金属密度。
