%0 Journal Article %T Bringing online adaptive radiotherapy to a standard C-arm linac. %A Groot Koerkamp ML %A Bol GH %A Kroon PS %A Krikke LL %A Harderwijk T %A Zoetelief AJ %A Scheeren A %A van der Vegt S %A Plat A %A Hes J %A van Gasteren IBA %A Renders ERT %A Rutgers RHA %A Kok SW %A van Kaam J %A Schimmel-de Kogel GJ %A Sikkes GG %A Winkel D %A van Rijssel MJ %A Wopereis AJM %A Ishakoglu K %A Noteboom JL %A van der Voort van Zyp JRN %A Beck N %A Soeterik TFW %A van de Pol SMG %A Eppinga WSC %A van Es CA %A Raaymakers BW %J Phys Imaging Radiat Oncol %V 31 %N 0 %D 2024 Jul %M 39006756 暂无%R 10.1016/j.phro.2024.100597 %X Current online adaptive radiotherapy (oART) workflows require dedicated equipment. Our aim was to develop and implement an oART workflow for a C-arm linac which can be performed using standard clinically available tools. A workflow was successfully developed and implemented. Three patients receiving palliative radiotherapy for bladder cancer were treated, with 33 of 35 total fractions being delivered with the cone-beam computed tomography (CBCT)-guided oART workflow. Average oART fraction duration was 24 min from start of CBCT acquisition to end of beam on. This work shows how oART could be performed without dedicated equipment, broadening oART availability for application at existing treatment machines.