@inproceedings{oai:repo.qst.go.jp:00054796, author = {Noda, Koji and 野田 耕司}, book = {International Journal of Modern Physics: Conference Series}, month = {Sep}, note = {Since 1994, HIMAC has carried out clinical studies and treatments for more than 9000 cancer patients with carbon-ion beams. During the first decade of the HIMAC study, a single beam-wobbling method, adopted as the HIMAC beam-delivery technique, was improved for treatments of moving tumors and for obtaining more conformal dose distribution. During the second decade, a pencil-beam 3D scanning method has been developed toward an “adaptive cancer treatment” for treatments of both static and moving tumors. A new treatment research facility was constructed with HIMAC in order to verify the developed 3D scanning technology through a clinical study that has been successfully conducted since 2011. As the next stage, a compact heavy-ion rotating gantry with a superconducting technology has been developed for the more accurate and shorter-course treatments. The twenty-year development of the heavy-ion radiotherapy technologies including accelerator technologies with HIMAC is reviewed}, pages = {1660219-1--1660219-10}, publisher = {World Scientific Publishing Co Pte Ltd}, title = {Development of heavy-ion radiotherapy technology with HIMAC}, volume = {44}, year = {2016} }