vector doppler imaging of a spinning disc ultrasound Doppler phantom
vector doppler imaging of a spinning disc ultrasound Doppler phantom
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DOI：
10.1016/j.ultrasmedbio.2006.04.007
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发表时间：
2006-07-01
影响因子：
2.9
通讯作者：
Fowlkes, J. Brian
中科院分区：
文献类型：
--
作者：
Kripfgans, Oliver D.;Rubin, Jonathan M.;Fowlkes, J. Brian
矢量多普勒方法用于获得与角度无关的面内速度信息。速度大小以及方向重建从定期转向彩色血流和前分裂孔径多普勒采集。通过多普勒彩色血流模式和随后的数据三角测量获得空间分辨的面内速度。通过使用深度扩展发射-接收多普勒孔径，实现了深度不变的恒定多普勒角。测量了50 cm s（-1）和360 °矢量速度方向的尖端速度。这是通过创建一个旋转的固体圆盘体模来实现的。这样的体模是为了合金水下安装和旋转的固体盘形超声体模（最大速度为50 cm s（-1））。多普勒三角测量实现了转向多普勒和分裂孔径的方法。显示了两种成像方法的结果。分裂孔径的结果表明，误差小于10%的速度幅度估计和小于2.5度的方向信息。
Vector Doppler methods are used to obtain angle independent in-plane velocity information. Velocity magnitude as well as direction are reconstructed from regular steered colour flow and front split-aperture Doppler acquisitions. Spatially resolved in-plane velocity was obtained through Doppler colour flow mode and subsequent data triangulation. A depth-invariant constant Doppler angle was achieved by using a depth expanding transmit-receive Doppler aperture. Velocities of tip to 50 cm s(-1) and 360 degrees vector velocity directions were measured. This was achieved by creating a spinning solid disc phantom. Such a phantom was built to alloy underwater mounting and spinning of a solid disc-shaped ultrasound phantom (maximum velocity of 50 cm s(-1)). Doppler triangulation was realised by steered Doppler and by a split-aperture approach. Results of both imaging methods are shown. Split-aperture results showed errors of less then 10% for velocity magnitude estimation and less then 2.5 degrees for directional information.