PO-0912 Effect of Heart Anatomy on Radiation Related Cardiac Risk in the Childhood Cancer Survivor Study. (April 2019) - Howell, R.; Bates, J.; Qi, L.; Hoppe, B.; Lee, C.; Smith, S.A.; Oeffinger, K.C.; Constine, L.S.; Leisenring, W.M.; Mulrooney, D.A.; Gibson, T.M.; Armstrong, G.T.; et al.