Table 1. Exposure factors used for water and polymethyl methacrylate (PMMA) phantom measurements.
Device | Rotation | Phantom positioning | kVp | mAs | FOV size (cm)a |
Ion chamber measurements in water phantom, xz plane | |||||
SCANORA® 3D | 360 | Central | 85 | 30 | 10 × 7.5 |
TLD measurements in water phantom, xz plane and yz plane | |||||
SCANORA 3D | 360 | Central | 85 | 30 | 10 × 7.5 |
SCANORA 3D | 360 | Off axis | 85 | 36 | <>6 × 6 |
3D Accuitomo XYZ | 360 | Off axis | 80 | 70 | 4 × 3 |
TLD measurements in water and PMMA phantoms, xy plane | |||||
GALILEOS™ | 200 | Off axis | 85 | 28 | 15 × 15 |
SCANORA 3D | 360 | Off axis | 85 | 30 | 10 × 7.5 |
ILUMA® Elite | 360 | Central | 120 | 76 | 21 × 14 |
ILUMA Elite | 360 | Off axis | 120 | 76 | 21 × 14 |
NewTom® VG | 360 | Central | 110 | 9.6 | 23 × 23 |
NewTom VG | 360 | Off axis | 110 | 6.1 | 23 × 23 |
3D Accuitomo™ 170 | 360 | Central | 90 | 87.5 | 4 × 4, 6 × 6, 8 × 8, 14 × 5, 14 × 10 |
3D Accuitomo 170 | 360 | Off axis | 90 | 87.5 | 4 × 4 |
3D Accuitomo 170 | 180 | Central | 90 | 45 | 10 × 10 |
i-CAT® N.G. | 360 | Central | 120 | 18.5 | 8 × 8, 16 × 6 |
i-CAT N.G. | 360 | Off axis | 120 | 18.5 | 8 × 8, 16 × 6 |
i-CAT N.G. | 180 | Central | 120 | 9.3 | 8 × 8 |
ProMax™ 3D | 200 | Central | 84 | 17.1 | 8 × 5, |
ProMax 3D | 200 | Off axis | 84 | 17.1 | 8 × 5 |
FOV, field of view; TLD, thermoluminescent dosemeter.
SCANORA 3D, Soredex, Tuusula, Finland; 3D Accuitomo XYZ, J Morita Mfg. Corp., Kyoto, Japan; 3D Accuitomo 170, J Morita Mfg. Corp., Kyoto, Japan; GALILEOS, Sirona Dental Systems, Bensheim, Germany; ILUMA Elite, IMTEC, St Paul, MN; NewTom VG, Quantitative Radiology, Verona, Italy; i-CAT N.G., Imaging Sciences International, Hatfield, PA; ProMax 3D, Planmeca Oy, Helsinki, Finland.
aDiameter × height.