Interfractional Variations of Tumor Centroid Position and Tumor Regression during Stereotactic Body Radiotherapy for Lung Tumor

Figure 1

(a) shows the mean interfraction variation of tumor centroid position over time. The blue, green, and red lines represent the interfraction variation of tumor centroid position in RL, AP, and SI directions, respectively. Horizontal lines represent the mean interfraction variation of tumor centroid position. Vertical lines represent the 95% error bars. (b), (c), and (d) show interfraction variations of tumor position for each patient during treatment in -lateral (right-left), -lateral (superior-inferior), and -lateral (anterior-posterior) directions. Each color represents the interfraction variation of tumor position of one patient.

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