工作原理　　　　在测定骨密度(BMD)时,通过骨骼的X线束能量会发生不同程度的吸收入,没有被吸收入的能量可以在身体的对侧检测到。骨骼的密度越大(含矿物质多),吸收掉的能量就越多,在对侧检测到的能量就越少。测量方法　　　　基本的骨密度测量,需要患者躺在检查床上约2分钟左 How it works When measuring bone mineral density (BMD), the energy of the X-ray beam passing through the bones absorbs to varying degrees and the energy that is not absorbed can be detected on the opposite side of the body. The greater the density of the bones (with more minerals), the more energy is absorbed and the less energy is detected on the contralateral side. Measurement Methods Basic BMD measurements require the patient to lie on the examination bed for about 2 minutes left