VP19.04: Walk‐through the fetal heart: simulation of in utero operation using virtual reality enhanced four‐dimensional (4D) echocardiography and 3D MRI. Issue Volume 58:Issue S1(2021)Supplement (14th October 2021) - Deng, J.; Lu, G.; Pandya, P.; Ushakov, F.; Leung, T.; Lloyd, G.; Bhattacharyya, S.; Encarnacion, D.; Hong, L.; Cao, H.; Xie, M.