Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics · 2010
Effective radiation dose of ProMax 3D cone-beam computerized tomography scanner with different dental protocols.
Сравнительное исследованиеСтатьяНазвание и аннотация: Перевод пока не подготовлен
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Qu Xing-min, Li Gang, Ludlow John B, Zhang Zu-yan, Ma Xu-chen
Аннотация
OBJECTIVES: The aim of this study was to compare effective doses resulting from different scan protocols for cone-beam computerized tomography (CBCT) using International Commission on Radiological Protection (ICRP) 1990 and 2007 calculations of dose.
STUDY DESIGN: Average tissue-absorbed dose, equivalent dose, and effective dose for a ProMax 3D CBCT with different dental protocols were calculated using thermoluminescent dosimeter chips in a human equivalent phantom. Effective doses were derived using ICRP 1990 and the superseding 2007 recommendations.
RESULTS: Effective doses (ICRP 2007) for default patient sizes from small to large ranged from 102 to 298 μSv. The coefficient of determination (R(2)) between tube current and effective dose (ICRP 2007) was 0.90. When scanning with lower resolution settings, the effective doses were reduced significantly (P < .05).
CONCLUSIONS: ProMax 3D can provide a wide range of radiation dose levels. Reduction in radiation dose can be achieved when using lower settings of exposure parameters.
STUDY DESIGN: Average tissue-absorbed dose, equivalent dose, and effective dose for a ProMax 3D CBCT with different dental protocols were calculated using thermoluminescent dosimeter chips in a human equivalent phantom. Effective doses were derived using ICRP 1990 and the superseding 2007 recommendations.
RESULTS: Effective doses (ICRP 2007) for default patient sizes from small to large ranged from 102 to 298 μSv. The coefficient of determination (R(2)) between tube current and effective dose (ICRP 2007) was 0.90. When scanning with lower resolution settings, the effective doses were reduced significantly (P < .05).
CONCLUSIONS: ProMax 3D can provide a wide range of radiation dose levels. Reduction in radiation dose can be achieved when using lower settings of exposure parameters.
Предметные рубрики MeSH
AdultBone MarrowBrainCervical VertebraeCheekCone-Beam Computed TomographyEsophagusFacial MusclesHumansImaging, Three-DimensionalLens, CrystallineLymph NodesMaleMandibleMouth MucosaOrbitParotid GlandPhantoms, ImagingPharynxRadiation DosageRadiation ProtectionRadiography, DentalRelative Biological EffectivenessSkinSkullSubmandibular GlandThermoluminescent DosimetryThyroid GlandTomography Scanners, X-Ray Computed