Table 1 The maximal values of WSS during peak systole in the stenosis (\(\hbox {WSS}_{{\mathrm{st}}}\)), spatially averaged values of WSS during peak systole (\(\hbox {WSS}_{{\mathrm{mean}}}\)) and its standard deviation for the simplified phantom for MRI, \(\hbox {DCFD}_{0.7\times 0.7\times 1.5 \,{\mathrm{mm}}^3}\), \(\hbox {DCFD}_{0.2\times 0.2\times 0.2\,{\mathrm{mm}}^3}\), original CFD, and the peak shift (normalized by the inlet diameter \(d_0\)) in MRI and downsized CFD (with respect to the original CFD)
\(\hbox {WSS}_{{\mathrm{st}}}\) [Pa] | \(\hbox {WSS}_{{\mathrm{mean}}}\) [Pa] | Standard deviation [Pa] | Peak shift\(^{*}\) [−] | |
|---|---|---|---|---|
MRI | 0.60 | 0.18 | 0.09 | \(0.39\textit{d}_{0}\) |
\(\hbox {DCFD}_{0.7\times 0.7\times 1.5 \,{\mathrm{mm}}^3}\) | 1.10 | 0.25 | 0.17 | \(0.22\textit{d}_{0}\) |
\(\hbox {DCFD}_{0.2\times 0.2\times 0.2 \,{\mathrm{mm}}^3}\) | 2.35 | 0.45 | 0.41 | \(0.11\textit{d}_{0}\) |
CFD | 4.99 | 0.68 | 0.80 | - |