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Table 3 Mean GTV* (cm 3 ) delineated with the different patient position protocols

From: The influence of MRI scan position on patients with oropharyngeal cancer undergoing radical radiotherapy

Mean GTVC†

Mean GTVD†† (p value)

Mean GTVRT#(p value)

44.1

33.7 (0.027)

30.5 (0.014)

  1. The p value relates to differences in the magnitude of GTVC and the other two GTVs.
  2. * Gross tumour volume.
  3. † GTV delineated on CT with diagnostic MRI scan viewed separately.
  4. †† GTV delineated using the CT registered with diagnostic MRI.
  5. # GTV delineated using the CT registered with radiotherapy positioned MRI.
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Radiation Oncology

ISSN: 1748-717X

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