The article describes the two-dimensional and Doppler-ultrasonographic examination of the equine peripheral vasculature. Beside the short literature and clinical utilization review, the authors explain the examination method step by step, illustrated with their own ultrasound pictures. The peripheral vascular ultrasonography begins with a two-dimensional transversal plane image of the examined vessel in order to evaluate the vessel wall and to measure the diameter of the vessel (Figure 2). The colour Doppler imaging technique is necessary to detect the blood flow and to determine its velocity and direction (Figure 3). The power Doppler mode is used to examine slow flow, i.e. venous circulation (Figure 4). A two-dimensional image in the longitudinal plane is suitable to place the sampling gate into the lumen of the vessel and to perform the angular correction and beam steering (Figure 5). The spectral waveform analysis using duplex Doppler technique is the next step of the examination (Figures 6 and 7). The last task is to perform the exact velocity measurements. The most frequently measured and expressed parameters are peak systolic velocity, end diastolic velocity, time average mean velocity volume flow, pulsatility and resistance index.
|Number of pages||7|
|Journal||Magyar Allatorvosok Lapja|
|Publication status||Published - Nov 2004|
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