Kisman K
Ultrasonics. 1977 May;15(3):105-10. doi: 10.1016/0041-624x(77)90026-9.
Several aspects of spectral analysis of bubble transients in Doppler ultrasonic decompression data are discussed. The computation of energy density spectra, using fast Fourier transform techniques for analyzing bubble transients, is described. Spectral analysis of data from probes implanted within animals, using a conventional Fourier analyzer, provided good visual indications of bubble events and interesting changes in spectral structure. A new transient spectral analysis technique that is suitable for quantitative real-time monitoring of small decompression bubbles is described. In a feasibility study using data from an implanted probe, an increase of 900% in bubble signal/noise ratio was observed.
讨论了多普勒超声减压数据中气泡瞬变的频谱分析的几个方面。描述了使用快速傅里叶变换技术分析气泡瞬变来计算能量密度谱。使用传统傅里叶分析仪对植入动物体内的探头数据进行频谱分析，能很好地直观显示气泡事件以及频谱结构的有趣变化。描述了一种适用于对小减压气泡进行定量实时监测的新型瞬态频谱分析技术。在一项使用植入探头数据的可行性研究中，观察到气泡信噪比提高了900%。
