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Computed Tomography01:10

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Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
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Author Spotlight: Advancing CBCT and Digital Dental Image Integration with AI-Assisted Digitization
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Optimization of orofacial cleft imaging protocols using device-specific low-dose cone-beam computed tomography.

Sohaib Shujaat1,2, Karla de Faria Vasconcelos1, Artúr Kesztyüs3

  • 1OMFS IMPATH Research Group, Department of Imaging & Pathology, Faculty of Medicine, KU Leuven & Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.

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|June 14, 2024
PubMed
Summary

Optimized low-dose cone-beam computed tomography (CBCT) protocols significantly reduce radiation exposure by up to eight times. These protocols maintain sufficient image quality for pre-surgical diagnostics and 3D modeling of cleft defects.

Keywords:
cleft palatecone‐beam computed tomographydiagnostic imagingradiation dosagethree‐dimensional imaging

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Area of Science:

  • Dentistry
  • Radiology
  • Medical Imaging

Background:

  • Cone-beam computed tomography (CBCT) is crucial for pre-surgical planning in cleft defects.
  • Optimizing CBCT protocols can reduce radiation dose while maintaining diagnostic image quality.

Purpose of the Study:

  • To evaluate device-specific low-dose CBCT protocols for pre-surgical diagnostics and 3D modeling of cleft defects.
  • To compare image quality and diagnostic accuracy across various low-dose CBCT settings.

Main Methods:

  • Six pediatric skulls with artificial clefts were scanned using a high-resolution CBCT as a reference.
  • Eight low-dose CBCT protocols on a Newtom VGi-evo device were tested with varying fields of view (FOVs).
  • Image quality was assessed for lamina dura, cementoenamel junction (CEJ), trabecular bone, and bony bridges, alongside 3D defect modeling.

Main Results:

  • Low-dose protocols reduced radiation dose by up to eight times compared to the reference standard.
  • Trabecular bone and CEJ showed adequate image quality across all tested low-dose protocols.
  • Regular small FOV protocols offered superior image quality for lamina dura and bony bridge delineation compared to Eco FOV counterparts.

Conclusions:

  • Low-dose CBCT protocols can achieve substantial radiation dose reduction without compromising diagnostic image quality for cleft defect assessment.
  • Optimized low-dose CBCT is suitable for pre-surgical diagnostics and 3D modeling in pediatric cleft cases.
  • Specific low-dose settings, particularly Regular small FOV, enhance visualization of critical anatomical structures.