2190-2191 / 2239
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GTV, Gross Tumor Volume
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CTV, Clinical Target Volume
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ITV, Internal Target Volume
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PTV, Planning Target Volume
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OAR, Organ At Risk
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PRV, Planning organ-at-Risk Volume
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TV, Treated Volume
GTV, CTV, and OAR are purely oncological/anatomical concepts which
delineation is independent of treatment technique.
ITV, PTV, and PRV are treatment planning (margin) dependent concepts
TV is treatment dependent concept