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Abstract #1511

Magnetic resonance fingerprinting on a 1.5T MRI-Linac for tumor response monitoring

Tom Bruijnen1, Bjorn Stemkens1, Jan J W Lagendijk1, Cornelis A T van den Berg1, and Rob H N Tijssen1

1Radiotherapy, University Medical Center Utrecht, Utrecht, Netherlands

Magnetic resonance fingerprinting (MRF) is the ideal tool for rapid daily tumor response monitoring on a MRI-Linac (MRL). The 1.5T MRL used in our institution has a modified gradient coil and magnet coil design that potentially complicates the parameter quantification in MRF. In this work we are the first to demonstrate the feasibility of 2D MRF in phantoms and in-vivo on a 1.5T MRL. Moreover, we investigate the accuracy and precision of the parametric maps.

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