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Fig. 2 | Radiation Oncology

Fig. 2

From: Quality assurance of the SCOPE 1 trial in oesophageal radiotherapy

Fig. 2

Examples of differences in interpretation of the GTV from the reference standard. In each image the reference standard is shown in yellow. a shows the unnecessary inclusion of the azygos vein; b is an example of the unnecessary inclusion of tissues surrounding the tumour; c shows the incorrect inclusion of the whole bronchus; and d shows a case where the anterior part of the oesophageal wall had not been included in the GTV

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