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. 2013 Mar 11;13(3):3341–3357. doi: 10.3390/s130303341

Figure 2.

Figure 2.

(a) Schematic drawing of the rectangular displacement grid as obtained from a linear array transducer; (b) Boundary discontinuities appear when projecting the data directly on a polar grid; (c) Upsampling and subsequent interpolation on the vascular finite element grid; (d) avoids boundary discontinuities to appear at the nodes.