First patients treated with a 1.5 T MRI-Linac: clinical proof of concept of a high-precision, high-field MRI guided radiotherapy treatment von Raaymakers, B W, Jürgenliemk-Schulz, I M, Bol, G H, Glitzner, M, Kotte, A N T J, van Asselen, B, de Boer, J C J, Bluemink, J J, Hackett, S L, Moerland, M A, Woodings, S J, Wolthaus, J W H, van Zijp, H M, Philippens, M E P, Tijssen, R, Kok, J G M, de Groot-van Breugel, E N, Kiekebosch, I, Meijers, L T C, Nomden, C N, Sikkes, G G, Doornaert, P A H, Eppinga, W S C, Kasperts, N, Kerkmeijer, L G W, Tersteeg, J H A, Brown, K J, Pais, B, Woodhead, P, Lagendijk, J J W

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A formalism for reference dosimetry in photon beams in the presence of a magnetic field von van Asselen, B, Woodings, S J, Hackett, S L, van Soest, T L, Kok, J G M, Raaymakers, B W, Wolthaus, J W H

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Consequences of air around an ionization chamber: Are existing solid phantoms suitable for reference dosimetry on an MR-linac? von Hackett, S. L., van Asselen, B., Wolthaus, J. W. H., Kok, J. G. M., Woodings, S. J., Lagendijk, J. J. W., Raaymakers, B. W.

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Beam characterisation of the 1.5 T MRI-linac von Woodings, S J, Bluemink, J J, de Vries, J H W, Niatsetski, Y, van Veelen, B, Schillings, J, Kok, J G M, Wolthaus, J W H, Hackett, S L, van Asselen, B, van Zijp, H M, Pencea, S, Roberts, D A, Lagendijk, J J W, Raaymakers, B W

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Spiraling contaminant electrons increase doses to surfaces outside the photon beam of an MRI-linac with a perpendicular magnetic field von Hackett, S L, van Asselen, B, Wolthaus, J W H, Bluemink, J J, Ishakoglu, K, Kok, J, Lagendijk, J J W, Raaymakers, B W

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Performance of a PTW 60019 microDiamond detector in a 1.5 T MRI-linac von Woodings, S J, Wolthaus, J W H, van Asselen, B, de Vries, J H W, Kok, J G M, Lagendijk, J J W, Raaymakers, B W

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Characterization of a prototype MR-compatible Delta4 QA system in a 1.5 tesla MR-linac von de Vries, J H W, Seravalli, E, Houweling, A C, Woodings, S J, van Rooij, R, Wolthaus, J W H, Lagendijk, J J W, Raaymakers, B W

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Technical Note: Consistency of PTW30013 and FC65‐G ion chamber magnetic field correction factors von Woodings, S. J., Asselen, B., Soest, T. L., Prez, L. A., Lagendijk, J. J. W., Raaymakers, B. W., Wolthaus, J. W. H.

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Reconstruction of a time-averaged midposition CT scan for radiotherapy planning of lung cancer patients using deformable registrationa von Wolthaus, J. W. H., Sonke, J.-J., van Herk, M., Damen, E. M. F.

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Minimizing the magnetic field effect in MR-linac specific QA-tests: the use of electron dense materials von van Zijp, H M, van Asselen, B, Wolthaus, J W H, Kok, J M G, de Vries, J H W, Ishakoglu, K, Beld, E, Lagendijk, J J W, Raaymakers, B W

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Performance of a cylindrical diode array for use in a 1.5 T MR-linac von Houweling, A C, de Vries, J H W, Wolthaus, J, Woodings, S, Kok, J G M, van Asselen, B, Smit, K, Bel, A, Lagendijk, J J W, Raaymakers, B W

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Reconstruction of a time-averaged midposition CT scan for radiotherapy planning of lung cancer patients using deformable registration von Wolthaus, J. W. H., Sonke, J.-J., van Herk, M., Damen, E. M. F.

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EP-1919: A cost-effective and fast end-to-end test for treatment accuracy evaluation von Wopereis, A, Ishakoglu, K, Seravalli, E, Wolthaus, J

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The characterization of a large multi-axis ionization chamber array in a 1.5 T MRI linac von Perik, T J, Kaas, J J, Greilich, S, Wolthaus, J W H, Wittkamper, F W

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EP-1515: Difference in dose to water for photon beams with and without the presence of a magnetic field von Wolthaus, J, Van Asselen, B, Woodings, S, Hackett, S, Van Zijp, L, Raaymakers, B

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EP-1522: 3D reconstruction of 1D water tank profile series to enable volumetric evaluation of beam models von Wolthaus, J, Raaymakers, B.W, Van Asselen, B

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OC-0075: Impact of air around an ion chamber: solid water phantoms not suitable for dosimetry on an MR-linac von Hackett, S, Van Asselen, B, Wolthaus, J, Kok, J, Woodings, S, Lagendijk, J, Raaymakers, B

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Fusion of respiration-correlated PET and CT scans: correlated lung tumour motion in anatomical and functional scans von Wolthaus, J W H, van Herk, M, Muller, S H, Belderbos, J S A, Lebesque, J V, de Bois, J A, Rossi, M M G, Damen, E M F

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Component structure of the Positive And Negative Syndrome Scale (PANSS) in patients with recent-onset schizophrenia and spectrum disorders von WOLTHAUS, J. E. D, DINGEMANS, P. M. A. J, SCHENE, A. H, LINSZEN, D. H, KNEGTERING, H, HOLTHAUSEN, E. A. E, CAHN, W, HIJMAN, R

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542 oral CLINICAL IMPLEMENTATION OF A PROTOCOL FOR PATIENTS CARRYING A PACEMAKER OR ICD RECEIVING RADIOTHERAPY von Wolthaus, J, Uiterwaal, H, Kui, K, Wijrdeman, H, Welleweerd, H

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