The effect of optimum, indication-specific imaging fields on the radiation exposure from CBCT examinations of impacted maxillary canines and mandibular third molars
Objective Indication-specific optimum field-of-views (FOVs) have been assessed for CBCTscans of impacted maxillary canines and mandibular third molars, as 40∅ × 35 mm and 35∅ × 35 mm, respectively. The objective was to investigate possible changes in absorbed organs and effective doses, for these t...
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Medical Journals Sweden
2024-09-01
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| Series: | Acta Odontologica Scandinavica |
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| Online Access: | https://medicaljournalssweden.se/actaodontologica/article/view/42041 |
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| author | Anne-Mari Ilo Janna Waltimo-Sirén Elmira Pakbaznejad Esmaeili Marja Ekholm Mika Kortesniemi |
| author_facet | Anne-Mari Ilo Janna Waltimo-Sirén Elmira Pakbaznejad Esmaeili Marja Ekholm Mika Kortesniemi |
| author_sort | Anne-Mari Ilo |
| collection | DOAJ |
| description |
Objective Indication-specific optimum field-of-views (FOVs) have been assessed for CBCTscans of impacted maxillary canines and mandibular third molars, as 40∅ × 35 mm and 35∅ × 35 mm, respectively. The objective was to investigate possible changes in absorbed organs and effective doses, for these two imaging indications, performing CBCTexaminations with optimum FOV sizes instead of commonly used FOVs. Additionally, radiation exposure-induced cancer risk was calculated for both imaging indications with optimum FOVs.
Methods An adult female head phantom (ATOM 702-D, CIRS, Norfolk, VA, USA) was scanned using Planmeca Viso G7 CBCT-device (Planmeca, Helsinki, Finland). Scanning factors, different FOV sizes, dose-area product (DAP) values and anatomical FOV locations were used for Monte Carlo PCXMC-simulation and ImpactMCsoftware. In the PCXMC- simulation, 10-year-old child and 30-year-old adult phantoms were used to estimating effective and absorbed organ doses.
Results The effective dose varied from 58 μSv to 284 μSv for impacted maxillary canines, and from 38 μSv to 122 μSv for mandibular third molars, the lowest dose value for each corresponding to optimum FOV. Effective dose reduction between the optimum FOV and the smallest common FOV of 50∅ × 50 mm, maintaining other scanning factors constant, was 33% for impacted maxillary canines, and 45% for mandibular third molars. At all examinations, the highest absorbed organ doses were in salivary glands or in oral mucosa.
Conclusions Optimum FOVs, 40∅ × 35 mm for impacted maxillary canine and 35∅ × 35 mm for mandibular third molar, could decrease effective doses received
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| format | Article |
| id | doaj-art-cdd02aaff2b2470c9e64eb44d5181cc3 |
| institution | DOAJ |
| issn | 0001-6357 1502-3850 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Medical Journals Sweden |
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| series | Acta Odontologica Scandinavica |
| spelling | doaj-art-cdd02aaff2b2470c9e64eb44d5181cc32025-08-20T03:04:15ZengMedical Journals SwedenActa Odontologica Scandinavica0001-63571502-38502024-09-0182110.1080/00016357.2023.2258981The effect of optimum, indication-specific imaging fields on the radiation exposure from CBCT examinations of impacted maxillary canines and mandibular third molarsAnne-Mari Ilo0Janna Waltimo-Sirén1Elmira Pakbaznejad Esmaeili2Marja Ekholm3Mika Kortesniemi4Department of Oral Pathology and Oral Radiology, Institute of Dentistry, University of Turku, Turku, FinlandDepartment of Pediatric Dentistry and Orthodontics, Institute of Dentistry, University of Turku, Turku, Finland; Wellbeing Services County of South-West Finland, FinlandDepartment of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, FinlandDepartment of Oral Pathology and Oral Radiology, Institute of Dentistry, University of Turku, Turku, Finland; Wellbeing Services County of South-West Finland, Finland; Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland; eHUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, Helsinki, FinlandHUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland Objective Indication-specific optimum field-of-views (FOVs) have been assessed for CBCTscans of impacted maxillary canines and mandibular third molars, as 40∅ × 35 mm and 35∅ × 35 mm, respectively. The objective was to investigate possible changes in absorbed organs and effective doses, for these two imaging indications, performing CBCTexaminations with optimum FOV sizes instead of commonly used FOVs. Additionally, radiation exposure-induced cancer risk was calculated for both imaging indications with optimum FOVs. Methods An adult female head phantom (ATOM 702-D, CIRS, Norfolk, VA, USA) was scanned using Planmeca Viso G7 CBCT-device (Planmeca, Helsinki, Finland). Scanning factors, different FOV sizes, dose-area product (DAP) values and anatomical FOV locations were used for Monte Carlo PCXMC-simulation and ImpactMCsoftware. In the PCXMC- simulation, 10-year-old child and 30-year-old adult phantoms were used to estimating effective and absorbed organ doses. Results The effective dose varied from 58 μSv to 284 μSv for impacted maxillary canines, and from 38 μSv to 122 μSv for mandibular third molars, the lowest dose value for each corresponding to optimum FOV. Effective dose reduction between the optimum FOV and the smallest common FOV of 50∅ × 50 mm, maintaining other scanning factors constant, was 33% for impacted maxillary canines, and 45% for mandibular third molars. At all examinations, the highest absorbed organ doses were in salivary glands or in oral mucosa. Conclusions Optimum FOVs, 40∅ × 35 mm for impacted maxillary canine and 35∅ × 35 mm for mandibular third molar, could decrease effective doses received https://medicaljournalssweden.se/actaodontologica/article/view/42041Cone-beam computed tomographyradiation exposureimpactedcuspidmolarthird |
| spellingShingle | Anne-Mari Ilo Janna Waltimo-Sirén Elmira Pakbaznejad Esmaeili Marja Ekholm Mika Kortesniemi The effect of optimum, indication-specific imaging fields on the radiation exposure from CBCT examinations of impacted maxillary canines and mandibular third molars Acta Odontologica Scandinavica Cone-beam computed tomography radiation exposure impacted cuspid molar third |
| title | The effect of optimum, indication-specific imaging fields on the radiation exposure from CBCT examinations of impacted maxillary canines and mandibular third molars |
| title_full | The effect of optimum, indication-specific imaging fields on the radiation exposure from CBCT examinations of impacted maxillary canines and mandibular third molars |
| title_fullStr | The effect of optimum, indication-specific imaging fields on the radiation exposure from CBCT examinations of impacted maxillary canines and mandibular third molars |
| title_full_unstemmed | The effect of optimum, indication-specific imaging fields on the radiation exposure from CBCT examinations of impacted maxillary canines and mandibular third molars |
| title_short | The effect of optimum, indication-specific imaging fields on the radiation exposure from CBCT examinations of impacted maxillary canines and mandibular third molars |
| title_sort | effect of optimum indication specific imaging fields on the radiation exposure from cbct examinations of impacted maxillary canines and mandibular third molars |
| topic | Cone-beam computed tomography radiation exposure impacted cuspid molar third |
| url | https://medicaljournalssweden.se/actaodontologica/article/view/42041 |
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