Modalities and techniques used for stereotactic radiotherapy, intensity-modulated radiotherapy, and image-guided radiotherapy: A 2018 survey by the Japan Society of Medical Physics

•We investigated the current status of radiotherapy in Japan.•VMAT was used at a level comparable to that of static gantry IMRT.•Target-based registration using integrated CT was the modality most frequently used.•Breath holding was the most commonly used technique.