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Fig. 4 | Radiation Oncology

Fig. 4

From: Combined effect of dose gradient and rotational error on prescribed dose coverage for single isocenter multiple brain metastases in frameless stereotactic radiotherapy

Fig. 4

Relative target coverage vs. rotational error for 3D rotation and axial rotation (inset). Target coverage was normalized to those of rotation-free cases. a 1-cm targets for different values of gradient steepness and iso-radius, b 1.5-cm targets, and c 2-cm targets. Smaller targets receive less coverage following rotation. Numbers next to data points are displacement values in mm

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