标准摘要
[中文适用范围]： 本技术规范规定了用于测量医疗超声系统及相关换能器空洞可检测率（VDR）的体模的基本特性和方法。它仅限于测试结果的长期可重复性方面。本技术规范确立了：使用无回声空洞的 TMM 3D 人工囊肿体模的重要特性和要求；3D 人工囊肿体模的设计示例、必要的测试设备以及相关计算机软件算法的使用。本技术规范目前适用于线性阵列换能器。建议在测量空洞可检测率（VDR）之前进行均匀性测试。注：3D 人工囊肿体模的基本概念也可能适用于其他类型的超声换能器；但需要进一步验证（见附录 D）。 [外文原描述]： IEC/TS 62558:2011(E) specifies essential characteristics of a phantom and method for the measurement of void-detectability ratio for medical ultrasound systems and related transducers. It is restricted to the aspect of long-term reproducibility of testing results. Medical diagnostic ultrasound systems and related transducers need periodic testing as the quality of medical decisions based on ultrasonic images may decrease over time due to progressive degradation of essential systems characteristics. The TMM (Tissue Mimicking Material) phantom is intended to be used to measure and to enable documentation of changes in void-detectability ratio in periodic tests over years of use. This technical specification establishes: - Important characteristics and requirements for a TMM 3D artificial cyst phantom using anechoic voids - A design example of a 3D artificial cyst phantom, the necessary test equipment and use of relevant computer software algorithms. This technical specification is currently applicable for linear array transducers. A uniformity test prior to void-detectability ratio (VDR) measurement is recommended.
英文名称Ultrasonics - Real-time pulse-echo scanners - Phantom with cylindrical, artificial cysts in tissue-mimicking material and method for evaluation and periodic testing of 3D-distributions of void-detectability ratio (VDR)