Disclosed herein is an apparatus comprising: an insertion tube configured to be inserted into a human; a metal target disposed inside the insertion tube and configured to emit X-ray by receiving radiation.本文公開了一種裝置,該裝置包含被配置為插入到人體中的插入管;設置在插入管內的金屬靶,該金屬靶被配置為通過接收輻射而發射X-射線。