Effect of Different Rotation Angle on Image Quality in Dental CBCT: Physical Evaluation
Effect of Different Rotation Angle on Image Quality in Dental CBCT: Physical Evaluation
复制标题
牙科CBCT中不同旋转角度对图像质量的影响：物理评估
DOI：
10.11318/mii.39.38
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
千田 浩一
中科院分区：
文献类型：
--
作者：
伊藤 実咲;小野寺 崇;小嶋 郁穂;千田 浩一
Dental cone beam computed tomography (CBCT) is now widely available withboth 180 and 360 imaging. Radiation dose and motion artifacts are lower for 180 than 360 imaging. Therefore, 180 imaging may be useful in children who are more sensitive toradiation exposure and have difficulty in controlling their body movements. Thepurpose of this study was to clarify the effect of rotation angle on imagequality from modulation transfer function (MTF) and noise power spectrum (NPS) and to determine the optimal imaging tube voltage byobtaining the tube voltage characteristics of FPD. As a result, resolution wasnot affected by rotation angle. NPS was higher in 180 imaging than in 360 imaging. System performance (SP) function was lower in 180 imaging than in 360 imaging, withoutchanging the frequency characteristics. The higher the tube voltage, the higherthe value of SP function and the lower the radiation dose. The optimal tubevoltage for dental CBCT will be 90 kV.
