Registration image acquisition and plan quality evaluation
tumor
TUMOR
After the radiotherapist outlined the target area, the physician comprehensively evaluated the different dosimetry data in the plan based on the isodose curve distribution and dose volume histogram on the MONACO5.11.01 planning system. cone beam CT (CBCT) scanning was conducted for all patients. The CBCT images were compared with the localized images. The frame including the tumor target and nearby fixed bone structures was registered with the bone registration method. The XVI image registration software was used for registration to obtain the linearity and rotation errors of X, Y, and Z axes. The X-axis referred to the left–right direction, where the left was positive and the right was negative. The Y axis represented the head–feet direction, where the head was positive and the foot was negative.