Towards a phantom-based quantitative assessment of dose reduction and image-quality trade-offs in half- and full-rotation dental CBCT protocols: a thermoluminescent dosimetry approach with clinical insight

AMASYA H., GÜNAY O., KESMEZACAR F. F., Akdoğan E. T., TUNÇMAN KAYAOKAY D., KARAÇAM S., ...Daha Fazla

Radiation and Environmental Biophysics, 2026 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1007/s00411-026-01228-5
  • Dergi Adı: Radiation and Environmental Biophysics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, Compendex, EMBASE, Environment Index, INSPEC, MEDLINE, Natural Science Collection (ProQuest), Biological Science Database (ProQuest), Biomedical Reference Collection: Corporate Edition (EBSCO), Health Research Premium Collection (ProQuest), Pharma Collection (ProQuest)
  • Anahtar Kelimeler: Anthropomorphic phantom, Cone-beam computed tomography, Dosimetry, Image quality, Radiographic imaging
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

This study aimed to compare full- (360°) and half-rotation (180°) dental cone-beam computed tomography (CBCT) protocols in terms of effective dose (ED) and quantitative image quality for the maxilla and mandible regions. An Alderson Radiation Therapy phantom was imaged using a Hyperion X9 Pro (Cefla, Imola) CBCT device with a 10 × 6 cm field of view. Both anatomical regions were acquired using full- and half-rotation protocols. A total of 67 thermoluminescence dosimeters were positioned in the phantom for ED calculations. Quantitative image-quality assessment was performed using axial slices extracted from each volume, and signal-to-noise ratio (SNRs) and contrast-to-noise ratio (CNRs) were calculated. The EDs were 406.33 µSv (full-rotation) and 208.29 µSv (half-rotation) for the maxilla, and 248.94 µSv (full-rotation) and 73.63 µSv (half-rotation) for the mandible. These doses corresponded to dose reductions of 48.74% in the maxilla and 70.42% in the mandible. SNRs and CNRs decreased by 36.69% and 34.74% in the maxilla, and by 49.95% and 50.28% in the mandible, respectively. Dose reduction was more pronounced in the mandible than in the maxilla, and this was accompanied by a greater loss in SNR and CNR. It is concluded that protocol selection should be guided by diagnostic requirements and adherence to the “As Low as Diagnostically Acceptable being Indication-oriented and Patient-specific (ALADAIP) principle.