Table 4.
White artefact volume and standard deviation of each material in all sequences
| Sequence | Slice plane | mm3 | APA | Au | Ag | Al | Ti | NC | CC |
|---|---|---|---|---|---|---|---|---|---|
| FSE-T1 | Axial | Volume | 15.05 | 26.15 | 36.80 | 66.18 | 1263.30 | 1942.30 | 5889.85 |
| SD | 8.27 | 6.29 | 18.97 | 26.52 | 346.63 | 424.57 | 1014.78 | ||
| Sagittal | Volume | 37.75 | 47.55 | 60.15 | 91.80 | 1156.10 | 1982.53 | 5491.95 | |
| SD | 11.81 | 16.33 | 22.89 | 50.95 | 280.57 | 395.01 | 682.33 | ||
| FSE-T2 | Axial | Volume | 0.88 | 18.93 | 26.38 | 58.23 | 1273.30 | 1940.18 | 5315.45 |
| SD | 1.44 | 9.56 | 19.56 | 24.14 | 361.21 | 533.00 | 896.57 | ||
| Sagittal | Volume | 34.50 | 47.90 | 63.95 | 91.65 | 1256.85 | 1887.98 | 5334.23 | |
| SD | 7.13 | 7.92 | 21.04 | 46.34 | 110.79 | 306.71 | 394.17 | ||
| GRASS | Axial | Volume | 75.68 | 167.03 | 210.73 | 222.15 | 1254.53 | 1782.75 | 4114.23 |
| SD | 43.00 | 36.93 | 43.90 | 33.15 | 55.28 | 95.13 | 89.59 | ||
| Sagittal | Volume | 164.40 | 192.50 | 232.88 | 341.45 | 1318.03 | 1820.83 | 5818.55 | |
| SD | 33.25 | 34.25 | 9.05 | 55.95 | 77.69 | 72.18 | 244.55 | ||
| FSPGR | Axial | Volume | 64.15 | 115.40 | 130.63 | 224.93 | 918.90 | 1253.83 | 3184.15 |
| SD | 37.01 | 29.59 | 37.55 | 41.97 | 114.34 | 133.81 | 196.19 | ||
| Sagittal | Volume | 124.38 | 167.68 | 195.36 | 704.20 | 1187.33 | 1652.25 | 4757.65 | |
| SD | 38.67 | 69.68 | 94.92 | 312.62 | 230.25 | 351.29 | 957.24 | ||
| GRE | Axial | Volume | 24.85 | 30.38 | 36.73 | 25.28 | 180.00 | 230.35 | 574.20 |
| SD | 11.32 | 5.83 | 11.47 | 21.27 | 66.35 | 68.50 | 86.14 | ||
| Sagittal | Volume | 85.48 | 63.08 | 95.63 | 132.55 | 280.43 | 401.70 | 744.25 | |
| SD | 38.08 | 15.17 | 41.60 | 52.84 | 55.97 | 35.51 | 155.23 | ||
| SPGR | Axial | Volume | 8.40 | 18.25 | 9.93 | 13.15 | 136.65 | 189.23 | 421.78 |
| SD | 5.32 | 8.59 | 5.19 | 6.02 | 28.35 | 49.02 | 79.19 | ||
| Sagittal | Volume | 42.61 | 42.23 | 68.85 | 68.35 | 176.43 | 250.95 | 527.10 | |
| SD | 5.03 | 12.60 | 35.88 | 27.26 | 44.52 | 58.01 | 57.92 | ||
| FIESTA | Axial | Volume | 806.85 | 906.75 | 1419.60 | 2161.63 | 14092.73 | 24,799.80 | 74,436.58 |
| SD | 215.55 | 135.89 | 399.57 | 387.79 | 2965.67 | 6664.08 | 24,970.10 | ||
| Sagittal | Volume | 721.01 | 934.30 | 1051.83 | 1893.60 | 15,281.40 | 28,232.40 | 79,582.80 | |
| SD | 224.91 | 235.03 | 284.88 | 465.46 | 3075.50 | 8564.27 | 35,612.71 | ||
| EPI | Axial | Volume | – | – | – | – | – | – | – |
| SD | – | – | – | – | – | – | – | ||
| Sagittal | Volume | – | – | – | – | – | – | – | |
| SD | – | – | – | – | – | – | – |
–, not measured; Ag, silver alloy; Al, aluminium; APA, gold-palladium-silver alloy; Au, type IV gold alloy; CC, cobalt–chromium alloy; EPI, echo planar imaging sequence; FIESTA, fast imaging employing steady state sequence; FSE-T1, T1 weighted fast spin echo sequence; FSE-T2, T2 weighted fast spin echo sequence; FSPGR, fast SPGR sequence; GRASS, gradient recalled acquisition in steady state sequence; GRE, gradient echo sequence; NC, nickel–chromium alloy; SD, standard deviation; SPGR, spoiled GRASS sequence; Ti, titanium.