Assessment of cone-beam CT technical image quality indicators and radiation dose for optimal STL model used in visual surgical planning

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Sammanfattning

The aim of this study was to identify cone-beam computed tomography (CBCT) protocols that offer an optimal balance between effective dose and 3D model for orthognathic virtual surgery planning, using CT as a reference, and to assess whether such protocols can be defined based on technical image quality metrics.Eleven CBCT (VISO G7, Planmeca Oy, Helsinki, Finland) scan protocols were selected out of 32 candidate protocols, based on effective dose and technical image quality measurements. Next, an anthropomorphic RANDO SK150 phantom was scanned using these 11 CBCT protocols and 2 CT scanners for bone quantity assessments. The resulting DICOM files were converted into STL models that were used for bone volume and area measurements in the predefined orbital region to assess the validity of each CBCT protocol for VSP.The highest CBCT bone volume and area of the STL models were obtained using normal dose protocol (F2) and ULD protocol (J13) which resulted in 48\6\8\5\ respectively.The optimal normal dose CBCT protocol” F2” offered optimal bone area and volume balance for STL. The optimal CBCT protocol can be defined exhibited similar using CNR and MTF values that were similar with of those of the reference CT scanners’. CBCT scanner with selected protocols can offer a viable alternative to CT scanners for acquiring STL models for VSP at a lower effective dose.
Originalspråkengelska
TidskriftDentomaxillofacial Radiology
Volym53
Nummer6
Sidor (från-till)423-433
Antal sidor11
ISSN0250-832X
DOI
StatusPublicerad - 1 juni 2024
MoE-publikationstypA1 Tidskriftsartikel-refererad

Vetenskapsgrenar

  • 3126 Kirurgi, anestesiologi, intensivvård, radiologi

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