Goddi Alfredo, Fanizza Marianna, Bortolotto Chandra, Raciti Maria Vittoria, Fiorina Ilaria, He Xujin, Du Yigang, Calliada Fabrizio
Centro Medico SME-Diagnostica per Immagini, Varese, Italy.
Radiology Department, Fondazione IRCCS Policlinico San Matteo, Via Oberdan 21, Pavia, 27100, Italy.
J Clin Ultrasound. 2017 Nov 12;45(9):582-588. doi: 10.1002/jcu.22519. Epub 2017 Jul 21.
Doppler ultrasonography is routinely used to identify abnormal blood flow. Nevertheless, conventional Doppler can be used to determine only the axial component of blood flow velocity and is angle dependent. A new method of multidimensional angle-independent estimation of flow velocity, called Vector Flow Imaging (VFI), has been proposed. It quantitatively evaluates the true velocity vector's amplitude and direction at any location into a vessel and displays a more intuitive depiction of the flow movements. High frame rate VFI, based on plane wave imaging, allows a detailed dynamic visualization of complex flow by showing even transient events, otherwise undetectable. © 2017 Wiley Periodicals, Inc. J Clin Ultrasound 45:582-588, 2017.
多普勒超声检查通常用于识别异常血流。然而，传统多普勒仅可用于确定血流速度的轴向分量，且依赖于角度。一种新的血流速度多维角度无关估计方法，称为矢量血流成像（VFI），已被提出。它能定量评估血管内任何位置处真实速度矢量的幅度和方向，并更直观地显示血流运动。基于平面波成像的高帧率VFI，通过显示即使是短暂事件（否则无法检测到），实现对复杂血流的详细动态可视化。© 2017威利期刊公司。《临床超声杂志》45:582 - 588，2017年。
