Effect of Segmentation Techniques (Manual Versus Semiautomatic) on the Accuracy of the Reconstructed Mandibular Condyle Using CBCT

Cairo University (CU) logo

Cairo University (CU)

Status

Enrolling

Conditions

Segmentation Techniques

Treatments

Radiation: CBCT radiation

Study type

Interventional

Funder types

Other

Identifiers

NCT05435417
RAD 7:1-1

Details and patient eligibility

About

Effect of Segmentation Techniques (Manual versus Semiautomatic) on the Accuracy of the Reconstructed Mandibular Condyle using CBCT

Full description

It will be used to segment the mandibular condyle and asses its volumetric and linear measurements. Therefore, the accuracy of the segmentation techniques of the mandibular condyle will be determined

Enrollment

29 estimated patients

Sex

All

Volunteers

No Healthy Volunteers

Inclusion criteria

Intact dry human skulls and mandibles.

Exclusion criteria

Presence of fracture, pathological lesions, or skeletal deformities in the condylar area.

Trial design

Primary purpose

Diagnostic

Allocation

Non-Randomized

Interventional model

Parallel Assignment

Masking

Triple Blind

29 participants in 3 patient groups

Manual segmentation technique of CBCT images of the condyles.
Experimental group
Description:
Using the manual edition built in tool, first a brush of small size will be used to demarcate the outline of the condyle in the sagittal cuts. Then shading the demarcated condylar area with a brush of larger size in each slice. The outline of the condyle will be refined on all cuts. The software built in tool 'create surface' will be used to create the segmented 3D volume
Treatment:
Radiation: CBCT radiation
Semiautomatic segmentation technique of CBCT images of the condyles.
Experimental group
Description:
Using the water shed built in tool, first a brush of small size will be used to demarcate the outline of the condyle by the 'background' option in all planes. Then using the 'foreground' option, a brush of larger size will be used to shade the condylar area. The software built in tool 'expand water shed' will be used to include the whole condyle. At last, 'create surface' option will be used to create the segmented 3D volume.
Treatment:
Radiation: CBCT radiation
Actual physical measurements of the condyles on the dry mandibles
No Intervention group
Description:
For linear measurements, actual physical measurements will be done on the dry mandibular condyles, using digital caliper, as mentioned before. For volumetric measurements, water displacement technique will be used. The mandibular condyle will be immersed in a graduated beaker containing water till the level of the glued gutta percha. The volume of the displaced water will be measured and will represent the actual volume of the condyle

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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