Resting-state functional connectivity magnetic resonance imaging (fcMRI) is a sensitive test that measures resting-state neural network connectivity, reflecting the integrity between functionally-related brain regions. fcMRI has been used to delineate cortical neural networks involved in a variety of cognitive domains, including memory, and attention. The investigators believe that fcMRI will be more sensitive than neurocognitive tests alone for investigating chemotherapy-induced cognitive changes. The goal of this novel study is to use fcMRI to investigate cognitive changes after chemotherapy in an attempt to understand the currently unknown neurobiological mechanisms associated with this phenomenon.