Lamboul Benjamin, Bennett Michael J, Anderson Tom, McDicken Norman W
Department of Medical Physics, Edinburgh University, Edinburgh, UK.
IEEE Trans Ultrason Ferroelectr Freq Control. 2009 Apr;56(4):727-37. doi: 10.1109/TUFFC.2009.1095.
Coded excitation is now a well-established technique in medical ultrasound for B-mode imaging applications. It enables a gain in depth of penetration, without sacrificing the spatial resolution and maintaining an acceptable peak intensity for patient safety. The rationale of this technique for velocity estimation applications still has to be formulated in more precise terms. In particular, differences in the situation that arise in color flow imaging (CFI) applications from typical B-mode imaging conditions, such as signal-to-noise ratio conditions, pulsing strategy, and safety requirements, need to be specifically addressed to assess more quantitatively the potential of this technique. This paper discusses the potential improvement in sensitivity, resolution, and statistical performance provided by coded excitation for CFI applications from theoretical considerations and simulations.
编码激励现在是医学超声中用于B模式成像应用的一项成熟技术。它能够在不牺牲空间分辨率并保持可接受的峰值强度以确保患者安全的情况下，增加穿透深度。该技术在速度估计应用中的原理仍需更精确地阐述。特别是，彩色血流成像（CFI）应用中出现的情况与典型B模式成像条件（如信噪比条件、脉冲策略和安全要求）存在差异，需要专门加以解决，以便更定量地评估该技术的潜力。本文从理论考虑和模拟方面讨论了编码激励为CFI应用提供的灵敏度、分辨率和统计性能方面的潜在改进。
