%0 Journal Article %T Spatial Comparison of CT-Based Surrogates of Lung Ventilation With Hyperpolarized Helium-3 and Xenon-129 Gas MRI in Patients Undergoing Radiation Therapy %A Tahir, Bilal A. %A Hughes, Paul J.C. %A Robinson, Stephen D. %A Marshall, Helen %A Stewart, Neil J. %A Norquay, Graham %A Biancardi, Alberto %A Chan, Ho-Fung %A Collier, Guilhem J. %A Hart, Kerry A. %A Swinscoe, James A. %A Hatton, Matthew Q. %A Wild, Jame M. %A Ireland, Rob H. %A , %J International Journal of Radiation Oncology*Biology*Physics %@ 0360-3016 %D 2018-11-01 %I Elsevier BV %~ DeepDyve