Table 1. MPI-derived velocities in non-stenotic phantoms.
Diameter [mm] | Flow rate [ml/min] | Reference velocity [cm/s] | FDHM [cm/s] | Correction factor c [1] | Absolute error [cm/s]/Absolute relative error FHDM | TD [cm/s] | Correction factor ε [ml] | Absolute error [cm/s]/Absolute relative error TD |
---|---|---|---|---|---|---|---|---|
4 | 155 ± 24.7 | 20.6 ± 3.8 | 25.4 ± 2.0 | 22.99 ± 1.24 | 4.8/23.3% | 30.0 ± 1.8 | 31.44 ± 1.48 | 9.4/45.6% |
190 ± 25.7 | 25.2 ± 4.2 | 30.4 ± 2.6 | 23.58 ± 1.36 | 5.2/20.6% | 20.8 ± 3.5 | 28.78 ± 2.06 | 4.4/17.5% | |
230 ± 26.9 | 30.5 ± 4.6 | 24.1 ± 3.8 | 21.87 ± 0.84 | 6.4/21.0% | 32.1 ± 3.9 | 30.04 ± 2.32 | 1.6/5.2% | |
305 ± 29.2 | 40.5 ± 5.4 | 40.8 ± 4.8 | 22.91 ± 1.50 | 0.3/0.7% | 39.5 ± 5.4 | 29.67 ± 2.33 | 1.0/2.5% | |
385 ± 31.6 | 51.1 ± 6.4 | 50.5 ± 6.1 | 22.84 ± 1.49 | 0.6/1.2% | 40.8 ± 7.2 | 28.59 ± 1.93 | 10.3/20.2% | |
485 ± 34.6 | 64.3 ± 7.6 | 67.7 ± 5.9 | 23.07 ± 1.50 | 3.4/5.3% | 70.5 ± 8.1 | 30.23 ± 2.29 | 6.2/9.6% | |
6 | 340 ± 30.2 | 20.0 ± 2.3 | 22.5 ± 1.3 | 18.46 ± 0.53 | 2.5/12.5% | 35.3 ± 1.4 | 73.94 ± 3.47 | 15.3/76.5% |
430 ± 32.9 | 25.3 ± 2.6 | 25.5 ± 1.9 | 18.13 ± 0.65 | 0.2/0.8% | 31.5 ± 2.9 | 70.84 ± 6.21 | 6.2/24.5% | |
520 ± 35.6 | 30.7 ± 2.9 | 32.4 ± 2.2 | 18.28 ± 0.62 | 1.7/5.5% | 28.3 ± 3.8 | 67.52 ± 6.44 | 2.4/7.8% | |
690 ± 40.7 | 40.7 ± 3.6 | 36.6 ± 3.2 | 17.78 ± 0.53 | 4.1/10.1% | 36.3 ± 5.1 | 67.10 ± 6.32 | 4.4/10.8% | |
870 ± 46.1 | 51.3 ± 4.4 | 54.7 ± 3.7 | 18.31 ± 0.61 | 3.4/6.6% | 44.6 ± 6.4 | 66.76 ± 6.20 | 6.7/13.1% | |
1100 ± 53 | 64.8 ± 5.3 | 57.8 ± 5.1 | 17.76 ± 0.51 | 7.0/10.8% | 56.3 ± 8.1 | 66.74 ± 6.19 | 8.5/13.1% | |
10 | 962 ± 48.9 | 20.4 ± 1.3 | 28.4 ± 2.9 | 13.07 ± 1.39 | 8.0/39.2% | 45.2 ± 1.7 | 71.02 ± 4.19 | 24.8/121.6% |
1200 ± 56 | 25.5 ± 1.6 | 35.1 ± 3.6 | 13.05 ± 1.40 | 9.6/37.6% | 20.1 ± 3.7 | 61.76 ± 7.67 | 5.4/21.2% | |
1450 ± 63.5 | 30.8 ± 1.8 | 30.1 ± 4.8 | 12.40 ± 1.52 | 0.7/2.3% | 23.5 ± 4.4 | 61.36 ± 7.48 | 7.3/23.7% | |
1900 ± 77 | 40.3 ± 2.3 | 43.3 ± 6.2 | 12.59 ± 1.52 | 3.0/7.4% | 43.2 ± 6.1 | 65.26 ± 8.21 | 2.9/7.2% | |
2420 ± 92.6 | 51.4 ± 2.8 | 58.9 ± 7.8 | 12.73 ± 1.50 | 7.5/14.6% | 57.8 ± 7.6 | 65.76 ± 8.14 | 6.4/12.5% | |
3050 ± 111.5 | 64.7 ± 3.5 | 39.7 ± 5.2 | 11.23 ± 0.59 | 25.0/38.6% | 52.2 ± 9.5 | 62.04 ± 7.79 | 12.5/19.3% |
This table shows the velocities for the FDHM method and the tracer dilution (TD) method in comparison to the reference values. Velocity errors emerge from the error of the mean of the correction factors.