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Lung Cancer

Target volume dose considerations in treatment planning for lung tumors examined

Published in Cancer Weekly, March 14th, 2006

Target volume dose considerations in proton beam treatment planning for lung tumors were discussed.

"We performed a treatment planning study in order to gather basic insight in the effect of setup errors and breathing motion on the cumulative proton dose to a lung tumor. We used a simplified geometry that simulates a 50 mm diameter gross tumor volume (GTV) located centrally inside lung tissue," scientists in the United States reported.

"The GTV was expanded with a uniform 5 mm margin into a clinical target volume (CTV) and into a variety of planning target volume (PTV's). Proton beam apertures were designed to conform the prescribed dose laterally to...

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