Computer-Assisted Segmentation of Craniofacial Structures and Osteotomy Planning Using CBCT and CT
Development and Evaluation of Methods for Automatic and Semi-Automatic Segmentation of Craniofacial Structures and Delineation of Osteotomy Corridors Using CBCT and CT Imaging
This project will develop and evaluate methods for automatic and semi-automatic segmentation of craniofacial structures and delineation of osteotomy corridors using cone-beam computed tomography (CBCT) and computed tomography (CT) images. It will assess the quality and reproducibility of expert-prepared reference segmentations, the influence of model training, and the accuracy, processing time, and errors of automated methods. Only existing clinical scans will be used, with no additional imaging or changes to patient treatment.
Studie Overzicht
Toestand
Interventie / Behandeling
Gedetailleerde beschrijving
This retrospective methodological project will use pseudonymized CBCT and CT images. Expert-reviewed segmentations and virtual osteotomy plans will serve as references. Selected cases will undergo repeated and independent assessment to evaluate intra- and interobserver agreement. A development dataset of CBCT examinations will be used to assess the effects of training set size and training progression. The final model will be tested on examinations not used during development. Evaluation will include segmentation accuracy, processing time, errors, technical failures, and correction requirements. Osteotomy corridors will be assessed against reference plans and nearby critical anatomical structures.
Studietype
Inschrijving (Geschat)
Contacten en locaties
Studiecontact
- Naam: Maciej Sikora
- Telefoonnummer: +48 41 260 55 85
- E-mail: sikora-maciej@wp.pl
Studie Locaties
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Kielce, Polen, 25-375
- Department of Maxillofacial Surgery, Hospital of the Ministry of Interior
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Contact:
- Maciej Sikora, dr hab.
- Telefoonnummer: +48 41 260 55 85
- E-mail: sikora-maciej@wp.pl
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Bemonsteringsmethode
Studie Bevolking
Patients aged 16-85 years at the time of clinically indicated CBCT or CT imaging, whose archived examinations meet the study eligibility criteria.
Beschrijving
Inclusion Criteria:
- Archived CBCT or CT examinations acquired for clinical indications.
- Patient age of 16-85 years at the time of imaging.
- Images available in DICOM format and suitable for analysis.
- Complete visualization of the anatomical structures required for the planned analysis.
- Image quality sufficient for reliable reference preparation and assessment.
Exclusion Criteria:
- Incomplete or corrupted image series.
- Insufficient imaging coverage.
- Image quality preventing reliable reference assessment.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Observatiemodellen: OTHER
- Tijdsperspectieven: RETROSPECTIVE
Cohorten en interventies
Groep / Cohort |
Interventie / Behandeling |
|---|---|
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Patients with archived CBCT or CT examinations
Patients whose archived CBCT or CT examinations will be used to develop and evaluate automatic and semi-automatic craniofacial segmentation methods and virtual osteotomy planning. |
Automatic and semi-automatic segmentation of craniofacial structures and virtual delineation of osteotomy corridors using archived CBCT and CT images. |
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Segmentation accuracy compared with expert-prepared reference segmentations
Tijdsspanne: At the time of final model evaluation, up to 6 months
|
Agreement between uncorrected algorithm-generated segmentation masks and expert-prepared reference masks, assessed using the Dice similarity coefficient (DSC). Scores range from 0 to 1, with higher values indicating greater overlap. |
At the time of final model evaluation, up to 6 months
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Intraobserver and interobserver agreement of reference segmentations
Tijdsspanne: During initial, repeat, and independent reference segmentation assessments, up to 6 months
|
Agreement between repeated reference segmentations by the same investigator and independent reference segmentations by a second investigator, assessed using the Dice similarity coefficient (DSC). Scores range from 0 to 1, with higher values indicating greater overlap. |
During initial, repeat, and independent reference segmentation assessments, up to 6 months
|
|
Segmentation processing time
Tijdsspanne: During segmentation processing, up to 6 months
|
Time required to generate segmentations for the evaluated examinations. |
During segmentation processing, up to 6 months
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|
Frequency of segmentation errors, technical failures, and correction requirements
Tijdsspanne: During segmentation processing and initial expert evaluation, up to 6 months
|
Frequency of segmentation errors, technical failures, restarts, and correction requirements, reported separately by category. |
During segmentation processing and initial expert evaluation, up to 6 months
|
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Segmentation performance by training set size and training progression
Tijdsspanne: During model training and internal validation, up to 6 months
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Dice similarity coefficient values across evaluated training set sizes and training stages during internal validation. |
During model training and internal validation, up to 6 months
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|
Evaluation of virtual osteotomy corridors
Tijdsspanne: At the time of virtual osteotomy corridor evaluation, up to 6 months
|
Assessment of computer-generated osteotomy corridors against expert-prepared reference plans and in relation to nearby critical anatomical structures. |
At the time of virtual osteotomy corridor evaluation, up to 6 months
|
Medewerkers en onderzoekers
Studie record data
Bestudeer belangrijke data
Studie start (Geschat)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Andere studie-ID-nummers
- CT/2026/3
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
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