Comparison of physical quality assurance between Scanora 3D and 3D Accuitomo 80 dental CT scanners

Libyan journal of medicine

Ahmed S. Ali¹ 

关键词: CBCT;    image quality;    resolution;    contrast;    radiation dose;   

DOI  :  10.3402/ljm.v10.28038

学科分类：医学（综合）

来源: Co-Action Publishing

【 摘 要 】

BackgroundThe use of cone beam computed tomography (CBCT) in dentistry has proven to be useful in the diagnosis and treatment planning of several oral and maxillofacial diseases. The quality of the resulting image is dictated by many factors related to the patient, unit, and operator.Materials and methodsIn this work, two dental CBCT units, namely Scanora 3D and 3D Accuitomo 80, were assessed and compared in terms of quantitative effective dose delivered to specific locations in a dosimetry phantom. Resolution and contrast were evaluated in only 3D Accuitomo 80 using special quality assurance phantoms.ResultsScanora 3D, with less radiation time, showed less dosing values compared to 3D Accuitomo 80 (mean 0.33 mSv, SD±0.16 vs. 0.18 mSv, SD±0.1). Using paired t-test, no significant difference was found in Accuitomo two scan sessions (p>0.05), while it was highly significant in Scanora (p>0.05). The modulation transfer function value (at 2 lp/mm), in both measurements, was found to be 4.4%. The contrast asse...

【 授权许可】

CC BY