An ideal observer approach to mechanical limits in b-mode ultrasound imaging.
An ideal observer approach to mechanical limits in b-mode ultrasound imaging.
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B 型超声成像中机械极限的理想观察者方法。
DOI：
10.1109/embc.2012.6346424
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Insana,MichaelF
中科院分区：
文献类型：
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作者：
Abbey,CraigK;Nguyen,NghiaQ;O'BrienJr,WilliamD;Insana,MichaelF
在医学应用中，超声脉冲的幅度通常受到机械指标所概括的机械因素的约束。我们应用理想观察者的方法在模拟环境中评估的作用，机械指标的限制，在b型超声成像的任务性能。我们模拟了一个线性阵列工作在15 MHz和60%的分数带宽，并考虑三个任务相关的乳腺超声检查在4cm的深度。理想的观察者认为，随着机械指数极限的提高，性能会有所提高，因此诊断信息的数量也会增加。然而，这些增益在标准b模式包络的计算之后几乎被完全擦除。
In medical applications, the amplitude of ultrasonic pulses is often constrained by mechanical considerations summarized by a mechanical index. We apply the ideal observer approach in a simulation environment to evaluating the role of mechanical index limits on task performance in b-mode ultrasonic imaging. We simulate a linear array operating at 15MHz and 60% fractional bandwidth, and consider three tasks related to breast sonography at a depth of 4cm. The ideal observer suggests that there are gains in performance - and hence the quantity of diagnostic information - as the limit on mechanical index is raised. However these gains are almost completely erased after computation of a standard b-mode envelope.