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PET/CT for radiotherapy planning of head-‐neck cancer

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<strong>CT</strong>V<br />

Clinical Target Volume<br />

GTV with margin<br />

accounting <strong>for</strong> sub-clinical<br />

microscopic extension<br />

This volume needs to be<br />

treated accurately to<br />

assure treatment efficacy.<br />

e.g.: <strong>CT</strong>V=GTV+0.5 cm<br />

<strong>CT</strong>V is a anatomicalclinical<br />

volume<br />

Slide 26<br />

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