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Table 1 Interfractional displacement of surgical clips on treatment day from planning

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

Treatment day

Interfractional movement (cm)

0 (Planning)

--

1

0.98

2

0.51

3

0.55

4

0.61

5

0.64

  1. CBCT images were taken at planning and before each day of treatment. Images were fused with the planning CT image after bony registration. Displacement of the clips between the each day and planning were calculated. Pre- and post-shift displacements are measured from the central coordinates of the GTV.
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Radiation Oncology

ISSN: 1748-717X

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