On the complexity of helical tomotherapy treatment plans.

ABSTRACT:

Purpose

Multiple metrics are proposed to characterize and compare the complexity of helical tomotherapy (HT) plans created for different treatment sites.

Methods

A cohort composed of 208 HT plans from head and neck (105), prostate (51) and brain (52) tumor sites was considered. For each plan, 14 complexity metrics were calculated. Those metrics evaluate the percentage of leaves with small opening times or approaching the projection duration, the percentage of closed leaves, the amount of tongue-and-groove effect, and the overall modulation of the planned sinogram. To enable data visualization, an approach based on principal component analysis was followed to reduce the dataset dimensionality. This allowed the calculation of a global plan complexity score. The correlation bet

SUBMITTER: Santos T 

PROVIDER: S-EPMC7386195 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature