APPENDIX IV: CT PROTOCOLS
Philips iCT | GE Lightspeed VCT | GE Discovery VCT | Siemens DS Definition | |
---|---|---|---|---|
MA | 60 | 50 | 70 | eff MAS 30-50MA |
KV | 100 | 100 | 100 | 100 |
Pitch | 0.993 | 1.375: 1/55mm/rotation | 1.375: 1/55mm/rotation | 0.9 |
Collimation | 128 x 0.625 mm | 64 x 0.625mm | 64 x 0.625mm | 24 x 1.2mm |
Reconstruction | 1.25 x 0.625 mm soft/lung 16 x 2.5 mm Axial MIP Coronal, Sagittal | 1.25 x 0.625 mm soft/lung 16 x 2.5 mm Axial MIP Coronal, Sagittal | 1.25 x 0.625 mm soft/lung 16 x 2.5 mm Axial MIP Coronal, Sagittal | 1.5 x 0.75 mm soft/lung 16 x 2.5 mm Axial MIP Coronal, Sagittal |
Rotation Time | 0.5s | 0.6s | 0.6s | 0.5s |
CTDi | ~1.22 | ~1.48 | ~1.56 | ~1.19 |
Software | iDOSE (iterative recon) | ACIR (iterative recon) | standard processing | IRIS (iterative recon) |