Table 3.
Range of the largest grey shade difference for the same voxel, mean grey shade difference and the percentage of voxels that changed value in the subtraction data sets according to unit
| Unit | First session (ranges) |
Second session (ranges) |
||||
|---|---|---|---|---|---|---|
| Largest grey shade difference for the same voxel | Mean grey shade difference | Percentage of voxels that changed value | Largest grey shade difference for the same voxel | Mean grey shade difference | Percentage of voxels that changed value | |
| CRAN | 2137–6069 | −0.3 to 1.0 | 64.6 to 65.1 | 2340 to 6286 | −1.6 to −0.5 | 71.6 to 71.7 |
| SCAN | 1718–2946 | −3.8 to 0.2 | 72.1 to 72.3 | 2297 to 4489 | −6.5 to −0.4 | 72.1 to 72.3 |
| NEWT | 7380–14,948 | −0.8 to 2.7 | 57.4 to 59.0 | 6425 to 8336 | −0.9 to 2.6 | 58.9 to 59.9 |
| PROM | 1237–3732 | −16.5 to −6.7 | 68.3 to 68.6 | 7930 to 8114 | 38.4 to 40.3 | 66.4 to 71.2 |
| ICAT | 2442–5059 | −2.5 to −0.4 | 99.8 to 99.8 | 6485 to 7317 | −0.4 to 45.9 | 99.8 to 99.8 |
| ACCU | 2631–3259 | −61.6 to 108.9 | 96.4 to 96.6 | 2369 to 3236 | −39.6 to 165.0 | 95.5 to 96.6 |
ACCU, 3D Accuitomo FPD80 (Morita, Kyoto, Japan); CRAN, Cranex® 3D (Soredex Oy, Tuusula, Finland); ICAT, i-CAT (Imaging Sciences International, Hatfield, PA); NEWT, NewTom™ 5G (QR Srl, Verona, Italy); PROM, Promax® Dimax 3 Digital (Planmeca Oy, Helsinki, Finland); SCAN, Scanora® 3D (Soredex Oy).