西藏地处中国西南部高原 ,平均海拔 30 0 0米以上 ,常年处于高寒、缺氧、干燥状态。因历史的和特殊的地理条件 ,西藏目前的几十所医院与内地同级医院相比 ,发展极不平衡 ,特别是医疗仪器设备的发展更显得落后。少数几家大医院虽引进了部分进口先进设备 ,但大部分医疗设备仍为 8 Tibet is located on the plateau of southwestern China and has an average elevation of over 300 meters above sea level. It is perennially cold, oxygen deficient and dry. Due to historical and special geographical conditions, the current dozens of hospitals in Tibet are extremely unbalanced compared to the same hospitals in the Mainland. In particular, the development of medical equipment is even more backward. Although a few large hospitals have introduced some imported advanced equipment, most medical equipment is still 8