Patient orientation | Supine, feet first |
Gantry tilt | 0° |
Region of interest | Initial exam: mid-T12 to mid-sacrum |
Subsequent exams: One level above to one level below fusion level(s) | |
Kernel/algorithm | B80/bone |
Milliamperage (mA) | 250 |
Kilovoltage (kV) | 140 |
Field of view (FOV) | 14 cm |
Matrix | 512 × 512 |
Volume acquisition slice collimation | 1.0 mm |
Image reconstruction progression | |
Step 1 | Reconstructed axial 3.0-mm-thick sections; entire scan volume |
Step 2 | Reconstructed axial 1.0-mm-thick sections at 0.5-mm increments (overlapped); region of interest only |
Step 3 | Reformatted images in 3 planes; region of interest; 1.0 mm axial (parallel to the disc); 3.0 mm coronal and sagittal |
Window and level settings | 2000–3000/350–400 |
* Multisection (4) CT scanner.