{"entity":{"id":"bas-raaymakers","kind":"person","name":"Bas W. Raaymakers","aka":[],"tldr":"Physicist who invented the MR-linac, letting radiotherapy see and adapt to the tumour in real time.","summary":"Bas Raaymakers conceived and led the development of the integrated MRI and linear accelerator at UMC Utrecht in collaboration with Elekta and Philips, treating the first patients on a high-field MR-linac in 2017 and enabling daily adaptive radiotherapy with soft-tissue visibility. He leads the MR-Linac Consortium's physics programme and works on real-time tumour tracking.","asOf":"2026-09-10","links":[{"label":"PubMed","url":"https://pubmed.ncbi.nlm.nih.gov/?term=Raaymakers%20BW%5BAuthor%5D%20MR-linac"}],"tags":["radiotherapy","mr-linac","physics"],"related":[],"cancers":[],"sections":[],"technologies":["mr-linac","imrt-igrt"],"targets":[],"drugs":[],"companies":[],"institutions":["umc-utrecht"],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":[],"role":"Professor of Experimental Clinical Physics, UMC Utrecht","institutionId":"umc-utrecht","specialisms":["MR-guided radiotherapy","MR-linac development","Medical physics","Adaptive radiotherapy"],"profiles":[{"label":"PubMed","url":"https://pubmed.ncbi.nlm.nih.gov/?term=Raaymakers%20BW%5BAuthor%5D%20MR-linac"}],"papers":[{"title":"First patients treated with a 1.5 T MRI-Linac: clinical proof of concept of a high-precision, high-field MRI guided radiotherapy treatment","journal":"Physics in Medicine and Biology","year":2017,"doi":"10.1088/1361-6560/aa9517"},{"title":"Integrating a 1.5 T MRI scanner with a 6 MV accelerator: proof of concept","journal":"Physics in Medicine and Biology","year":2009,"doi":"10.1088/0031-9155/54/12/N01"}],"orcid":"0000-0002-8036-6808"},"route":"/people/bas-raaymakers/","neighbours":{"technology":[{"id":"imrt-igrt","kind":"technology","name":"IMRT / IGRT (modern external beam)","route":"/technologies/imrt-igrt/"},{"id":"mr-linac","kind":"technology","name":"MR-guided adaptive radiotherapy","route":"/technologies/mr-linac/"}],"institution":[{"id":"umc-utrecht","kind":"institution","name":"UMC Utrecht Cancer Center","route":"/institutions/umc-utrecht/"}]}}