Table 1 Absolute calcified stenosis diameters (true diameters: 12.5%: 0.5 mm, 25%: 1.0 mm, 50%: 2.0 mm), measured total vessel diameters (true diameter 4.0 mm) as measured for the different protocol types per phantom type
Density [mmHA/cm3] | True stenosis size | Method | Plaque diameter [mm] | Vessel diameter [mm] | Measured stenosis [%] |
|---|---|---|---|---|---|
197 | 12,5 % | High pitch | - | - | - |
(0.5 mm/4.0 mm) | Gating | - | - | - | |
25% | High pitch | - | - | - | |
(1.0 mm/4.0 mm) | Gating | - | - | - | |
50% | High pitch | - | - | - | |
(2.0 mm/4.0 mm) | Gating | - | - | - | |
401 | 12,5% | High pitch | 0.97 ± 0.1 | 3.96 ± 0.1 | 24.6 ± 2.7 |
(0.5 mm/4.0 mm) | Gating | 0.88 ± 0.1 | 3.95 ± 0.1 | 22.4 ± 3.3 | |
25% | High pitch | 1.48 ± 0.2 | 4.13 ± 0.2 | 35.8 ± 4.3 | |
(1.0 mm/4.0 mm) | Gating | 1.40 ± 0.2 | 4.00 ± 0.1 | 34.9 ± 4.6 | |
50% | High pitch | 1.98 ± 0.2 | 4.08 ± 0.2 | 48.6 ± 4.3 | |
(2.0 mm/4.0 mm) | Gating | 1.98 ± 0.2 | 4.00 ± 0.1 | 49.6 ± 4.6 | |
796 | 12,5% | High pitch | 1.27 ± 0.1 | 4.35 ± 0.4 | 29.2 ± 2.4 |
(0.5 mm/4.0 mm) | Gating | 1.18 ± 0.1 | 4.52 ± 0.4 | 26.2 ± 2.6 | |
25% | High pitch | 1.80 ± 0.4 | 4.52 ± 0.4 | 39.7 ± 5.9 | |
(1.0 mm/4.0 mm) | Gating | 1.71 ± 0.4 | 4.70 ± 0.5 | 36.1 ± 5.0 | |
50% | High pitch | 2.39 ± 0.4 | 3.99 ± 0.3 | 59.6 ± 7.1 | |
(2.0 mm/4.0 mm) | Gating | 2.22 ± 0.3 | 3.93 ± 0.2 | 56.3 ± 5.9 |