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Table 2 Intrafractional movement of the GTV on Day 4 & 5

From: Image-guided radiation therapy using surgical clips for localization of colonic metastasis from thyroid cancer

Treatment day

Pre-shift displacement (cm)

Post-shift displacement (cm)

Change in displacement (cm)

4

0.61

0.44

0.21

5

0.64

0.35

0.41

  1. The patient was repositioned on days 4 and 5 after initial CBCT to improve GTV alignment and conform to PTV margins. The change in magnitude of intrafractional displacement is shown.
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Radiation Oncology

ISSN: 1748-717X

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