IEC TS 62558:2011
超声波学.实时脉冲反射波扫描器.仿薄纱材质外圆人造囊仿真模型及其VDR(空鉴别比率)的三维分布定期试验和自动化求值方法
Ultrasonics - Real-time pulse-echo scanners - Phantom with cylindical, artificial cysts in tissue-mimikring material and method for automated evaluation and periodic testing of 3-D distributions of void-detectability ratio (VDR)