Chang K.-H.MING-CHIH HOCHI-CHUAN YEHChen Y.-C.Lian F.-L.Win-Li LinYen J.-Y.FENG-LI LIANYUNG-YAW CHENJIA-YUSH YEN2020-09-302020-09-3020120094-2405https://scholars.lib.ntu.edu.tw/handle/123456789/516217Effectiveness of external respiratory surrogates for in vivo liver motion estimationjournal article10.1118/1.47389662-s2.0-84864646970