Gating and intrafraction drift correction on a 1.5 T MR-Linac: Clinical dosimetric benefits for upper abdominal tumors
Guus Grimbergen, S. Hackett, Fasco van Ommen, Astrid L.H.M.W. van Lier, Pim T.S. Borman, Lieke T.C. Meijers, Eline N. de Groot-van Breugel, Johannes C.J. de Boer, Bas W. Raaymakers, Martijn Intven, Gert J. Meijer
Abstract
This work reports on the first seven patients treated with gating and baseline drift correction on the high-field MR-Linac system. Dosimetric analysis showed that the active motion management system improved congruence to the planned dose, efficiently mitigating detrimental effects of intrafraction motion in the upper abdomen.
Topics & Concepts
GatingNuclear medicineLinear particle acceleratorMedicineUpper abdomenRadiologyPhysicsOpticsBeam (structure)PhysiologyAdvanced Radiotherapy TechniquesAdvanced MRI Techniques and ApplicationsRadiation Therapy and Dosimetry