Geometric distortion in 5 different fields of view (FOV) was calculated by measuring the absolute borderline error of direct scan and coronal digital reconstructed radiograph (DRR).
将获得的图像分为不同大小的5个视窗范围，测量直接扫描图像和DRR图像的边界绝对位置误差并计算其几何畸变率。
Geometric distortion in 5 different fields of view (FOV) was calculated by measuring the absolute borderline error of direct scan and coronal digital reconstructed radiograph (DRR).
将获得的图像分为不同大小的5个视窗范围，测量直接扫描图像和DRR图像的边界绝对位置误差并计算其几何畸变率。
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