Liselotte ten Asbroek is an RTT with almost twenty years of experience in radiotherapy. She started in 2002 as an RTT-student in the radiotherapy department of Medisch Spectrum Twente (MST) in Enschede, the Netherlands. After graduation she went to Switzerland to work as an RTT in Stadtspital Triemli, Zürich. In 2010 she returned to MST where she currently works as a senior RTT. Liselotte has worked on various projects. In both Enschede and Zürich, she was involved in the introduction of Deep Inspiration Breathhold. Furthermore she introduced IGART for lung cancer patients. Last two years she was involved in the clinical implementation of online adaptive radiotherapy with Ethos. In addition, she has set up a training program so that RTTs are trained to perform online adaptive treatments independently.