CRANIO-MAXILLOFACIAL CT SCAN PROTOCOL
Thank you for reviewing this protocol. The accuracy of the patient specific surgical templates is dependent upon the quality of the CT scan. If you have any questions please contact us at (704) 650-9283.
Scan Guidelines
- High spatial resolution scans are critical. The series should be acquired in continuous slices at a thickness of 0.5mm–1.0mm. Slice spacing and thickness should be the same.
- Please use a scanning algorithm that produces high resolution images suitable for 3D reconstruction or stereotactic planning. Suggested algorithms: GE: standard, Siemens: H30s, Toshiba: FC20, Philips: B
- The scanning FOV must contain the entire region of interest with a 5mm margin.
- Motion artifact will affect the accuracy of the anatomical model. Please ensure that the patient does not move during the scan. If the patient moves during the scan, the scan must be repeated. TactileMED will reject any scan that contains motion artifact.
- Please do not use gantry tilt. Position the patient with the occlusal plane parallel to the image plane.
- CT Scanners
CBCT
|
Helical CT Scanners |
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FOV |
Gantry Tilt |
Scan Spacing |
Slice Thickness |
Algorithm |
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|
20-25 cm |
0 |
0.5-1.0 mm |
0.5-1.0 mm |
STANDARD |
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|
CBCT Scanners |
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|
Scanner |
Scan Time |
Voxel Size |
FOV |
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|
i-CAT Classic |
40 sec |
0.4mm |
16cm x 22cm |
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|
i-CAT Next Gen |
26.9 sec |
0.4mm |
23cm x 17cm |
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|
Iluma Ultra |
40 sec |
0.4mm |
16.4cm x 18cm |
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|
Other |
Longest |
0.3-0.4mm |
Largest |
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