Describes the importance of quality assurance of the radiotherapy and explains the structural design and operation method of the isocenter shoots and laser calibration tools.
本文介绍了放射治疗过程中进行质量检测的重要性，阐述了等中心射野校准工具的结构设计和使用方法。
The longitudinal resolution and alias at off-isocenter locations are related to factors of distance from the isocenter, interpolation algorithm, reconstruction interval and pitch.
纵向分辨率和混淆失真与偏离成像中心的距离、插值算法、重建间隔和螺距等因素有关。
The longitudinal resolution and alias at off-isocenter locations are related to factors of distance from the isocenter, interpolation algorithm, reconstruction interval and pitch.
纵向分辨率和混淆失真与偏离成像中心的距离、插值算法、重建间隔和螺距等因素有关。
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