Please use this identifier to cite or link to this item:
http://acervodigital.unesp.br/handle/11449/74937
- Title:
- Influence of anatomical location on CT numbers in cone beam computed tomography
- Universidade Estadual de Campinas (UNICAMP)
- Universidade Estadual Paulista (UNESP)
- University of California
- University of California, Los Angeles
- 2212-4403
- Objective: To assess the influence of anatomical location on computed tomography (CT) numbers in mid- and full field of view (FOV) cone beam computed tomography (CBCT) scans. Study Design: Polypropylene tubes with varying concentrations of dipotassium hydrogen phosphate (K2HPO4) solutions (50-1200 mg/mL) were imaged within the incisor, premolar, and molar dental sockets of a human skull phantom. CBCT scans were acquired using the NewTom 3G and NewTom 5G units. The CT numbers of the K2HPO 4 phantoms were measured, and the relationship between CT numbers and K2HPO4 concentration was examined. The measured CT numbers of the K2HPO4 phantoms were compared between anatomical sites. Results: At all six anatomical locations, there was a strong linear relationship between CT numbers and K2HPO4 concentration (R 2 > 0.93). However, the absolute CT numbers varied considerably with the anatomical location. Conclusion: The relationship between CT numbers and object density is not uniform through the dental arch on CBCT scans. © 2013 Elsevier Inc.
- 1-Apr-2013
- Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology, v. 115, n. 4, p. 558-564, 2013.
- 558-564
- hydroxyapatite
- phosphate
- potassium derivative
- potassium dihydrogen phosphate
- chemistry
- comparative study
- cone beam computed tomography
- equipment
- human
- image processing
- image quality
- incisor
- molar tooth
- premolar tooth
- radiation dose
- radiation scattering
- radiography
- statistics
- three dimensional imaging
- tooth arch
- tooth socket
- X ray
- Bicuspid
- Cone-Beam Computed Tomography
- Dental Arch
- Durapatite
- Humans
- Image Processing, Computer-Assisted
- Imaging, Three-Dimensional
- Incisor
- Molar
- Phantoms, Imaging
- Phosphates
- Potassium Compounds
- Radiation Dosage
- Scattering, Radiation
- Tooth Socket
- X-Rays
- http://dx.doi.org/10.1016/j.oooo.2013.01.021
- Acesso aberto
- outro
- http://repositorio.unesp.br/handle/11449/74937
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