Abstract

Image-guided helical tomotherapy (HT) technology has been widely used in the clinical treatments. Treatment benefits have been observed in the management of head and neck, lung and pelvic cancers. HT, compared with step and shoot intensity-modulated radiation therapy (SaS-IMRT) and three-dimensional conformal radiation therapy (3D-CRT), had certain dosimetric advantages of its unique gantry-ring design. This study aims to investigate the dosimetric characteristics of HT, SaS-IMRT and 3D-CRT during the treatment of liver tumor as well as their dose distribution comparison of the associated critical normal tissues.

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