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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Impact of Bit Errors in Digitized RF Data on Ultrasound Image Quality
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Impact of Bit Errors in Digitized RF Data on Ultrasound Image Quality

机译：数字化RF数据中的位错误对超声图像质量的影响

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摘要

This article quantitatively analyzes the impact of bit errors in digitized RF data on ultrasound image quality. The quality of B-mode images in both linear array and phased array imaging is evaluated by means of three objective image quality metrics: peak signal-to-noise ratio, structural similarity index, and contrast-to-noise ratio, when bit errors are introduced to the RF data with different bit-error rates (BERs). The effectiveness of coding schemes for forward error detection and correction to improve the image quality is also studied. The results show that ultrasound imaging is inherently resilient to high BER. The image quality suffers unnoticeable degradation for BER lower than 1E-6. Simple 1-bit parity coding with 9 added redundancy helps to retain similar image quality for BER up to 1E-4, and Hamming coding with 33.3 added redundancy allows the BER to increase to 1E-3. These results can serve as a guideline in the datalink design for ultrasound probes with in-probe receive digitization. With much more relaxed BER requirements than in typical datalinks, the design can be optimized by allowing fewer cables with higher data rate per cable or lower power consumption with the same cable count.
机译：本文定量分析了数字化RF数据中的位错误对超声图像质量的影响。线性阵列和相控阵成像中B模式图像的质量均通过三个客观图像质量指标进行评估：峰值误码率，结构相似性指数和对比度-噪声比（当发生误码时）引入具有不同误码率（BER）的RF数据。还研究了用于前向错误检测和校正以提高图像质量的编码方案的有效性。结果表明，超声成像对高BER具有固有的弹性。 BER低于1E-6时，图像质量会明显下降。具有9个冗余的简单1位奇偶校验编码有助于在BER达到1E-4时保持相似的图像质量，而具有33.3冗余的Hamming编码可使BER增加到1E-3。这些结果可作为具有探头内接收数字化功能的超声探头的数据链路设计的指南。与一般数据链路相比，BER要求要宽松得多，因此可以通过使用更少的电缆，每条电缆具有更高的数据速率或在相同的电缆数下降低功耗来优化设计。

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