Abstract:To improve the coverage of irradiation on tumor and resolve the problem of dose shortage at the edge of tumor beside sensitive organs, we will discuss about designing divisional target plans for massive liver cancer. On the stage of designing treatment plans, we divide the Planning Target Volume (PTV) into three sub-targets: PTV1, PTV2 and PTV3. PTV1 and PTV3 are the regions for designing treatment plans, and PTV2 is the spacer region between PTV1 and PTV3. We select two cases of massive liver cancer, adopt th… Show more
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