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SPA－Ⅳ型骨密度分析仪是利用241Am（锯241）发出的γ线束，对人体活骨进行平面扫描，计算机定量分析，给出精确骨况含量（BMC）的一种高档医疗仪器，是早期诊断骨骼生理、病理改变及人体衰老程度的有效手段。我院1992年引进该设备，现将两例故障的检修介绍如下，以供同行参考
The SPA-IV bone density analyzer is a high-grade medical instrument that uses the γ-ray beam emitted by 241Am (Saw 241) to scan the human living bone in plane and quantitatively analyzes it to give a precise bone mass content (BMC). Diagnosis of bone physiology, pathological changes and the effectiveness of human aging means. In 1992, we introduced the equipment in our hospital. Now we will introduce the troubleshooting of the two cases as follows for your reference.