CT/CBCT SCANS AND DATA EXPORT

Instructions for a successful 3D planning

  • Detachable, metalliferous prosthesis must be removed (artefacts can lead to an inaccurate planning)
  • Keep metal – free prosthesis
  • Adjust patient‘s head in a way that beam is parallel to lower jaw occlusal plane
  • Create a space between buccal soft tissue and the jaw bone by using cotton rolls
  • Scan patient with the CT – rack, check if titan tubes are complete (10 mm)
  • If no CT – rack is available let the patient bite on something (prosthesis, spatula, plastic card etc.) to ensure immobile lower jaw
  • Enter LJ oder UJ right – aligned in the patient data file
  • Gantry =0, otherwise scan is not compatible with planning software (FreeForm, OneGraft3D, SimPlant etc.)
  • Layer bigger/equal to feed, never smaller (good value 1/1/1)
  • Field of view as small as possible, spine is not desired (upper jaw ca. 9-10 cm, lower jaw ca. 10-15 cm)
The scan – level indicator needs to be adjusted in axial and sagittal level at right angle.
This can be checked in the alignment – record (Topo, Scout) or in the first axial level.

SCANNING THE LOWER JAW:

  • Scan from below lower jaw (first bone – free layer) until scan – level indicator

SCANNING THE UPPER JAW:

  • Scan from scan – level indicator to lower end of Orbita (including maxillary sinus)

ATTENTION:

  • If the patient has moved a second scan should be done.
  • Vary the patient name (John Doe2) to create a new data set.

OUTPUT FORMAT DICOM
(.dcm) Digital Imaging and Communications in Medicine

SLICE THICKNESS/RESOLUTION

Original resolution/voxel size [mm] 0.16 – 0.3 mm is needed for a reliable planning.

  • Only axial images are compatible with the planning software, sagittal images are not compatible for reading in and processing radiological data
  • If combinations of axial and sagittal images are created, the whole data-­set is incompatible
Only axial images are compatible with the planning software, sagittal images cannot be read in and processed.
If combinations of axial and sagittal images are created, the whole data set is incompatible.

In case you export your data on your own, here are some examples on how to export for various imaging software solutions:

Please check the successful export by using a free DICOM – Viewer software (e.g. XNView/xnview.de) before uploading to avoid any delays in planning caused by defective data.

If you don‘t find the right format, please ask your radiologist for advice!
The output format of a digital radiological device can easily be switched within its settings without taking another scan.

Technical Support

Mr. Goran Nikoloski +49 30 20 60 73 98 35 or
Mr. Christian Kühn +49 30 20 60 73 98 26
E: bonebuilder@botiss.com

Download Instruction-PDFs

CT/CBCT SCANS AND DATA EXPORT – Instructions for a successful 3D planning (LINK/PDF?)