Segmentation turns the CT scan into 3D bone models, and it's only as good as the scan it starts from. These tips help anyone who uploads scans or reviews segmentation get clean models with less rework. To review a segmentation step by step, see Segmentation Review & Confirmation.
Start with a good scan
Thin, even slices. Consistent, thin slice spacing produces smoother, more accurate models. Uneven or thick spacing can cause the scan to be rejected or reduce quality. CustoMED flags slices thicker than 1.5 mm and slice spacing of 1.5 mm or more.
Full coverage. Include the entire region of interest and any reference anatomy the procedure needs (for example, both hips for HRA).
Complete series. Export the full series without cropping or downsampling. A CT series needs at least 30 slices.
Minimize artifacts. Metal and motion artifacts degrade segmentation. Follow your procedure's scan protocol. See Supported File Formats & Scan Protocols.
Pick the right series
Check the warnings on each series in the upload preview before you choose one.
Prefer an original series. A series marked "Metadata outside normal range" is a derived (reconstructed) series.
If the upload contains more than one series, you can switch between uploaded series later with Series selection during segmentation review.
Review carefully
Use the four-view layout to check the model against the slices.
Look for missing fragments (fractures), merged neighbors or gaps before approving.
If something's off, don't accept a poor model. Click the red reject button (X) next to Confirm and describe the problem in at least 50 characters, so it can be reviewed. You can also re-export the scan or contact support.
Approve with intent
Clicking Confirm approves the segmentation and advances the case. Only approve when the anatomy faithfully represents the scan, because everything downstream depends on it.