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Fig. 1 | Radiation Oncology

Fig. 1

From: Method of computing direction-dependent margins for the development of consensus contouring guidelines

Fig. 1

Diagram for directional margin explanation: a and b show coronal and axial views of the GTV (green) and CTV (red). In blue and orange are the expansion vectors in the anatomical right (R) and left (L) directions respectively. The dimensions are shown along the axes. c The vector lengths collected over the surface of the GTV. Computing the medians yields an expansion of 7.0 mm in the R direction and 2.0 mm in the L direction

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Radiation Oncology

ISSN: 1748-717X

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