Because magnetic resonance imaging–guided radiation therapy (MRIgRT) offers exquisite
soft tissue contrast and the ability to image tissues in arbitrary planes, the interest in this …

Objective To develop a method for the assessment and characterization of 3D geometric
distortion as part of routine quality assurance for MRI scanners commissioned for Radiation …

Background and purpose: Image distortion is one of the major drawbacks of magnetic
resonance (MR) imaging for use in radiotherapy treatment planning (RTTP). In this study, the …

Purpose: MR image geometric integrity is one of the building blocks of MRI‐guided
radiotherapy. In particular, tissue magnetic susceptibility‐induced effects are patient …

The aim of this study is to investigate and correct for machine-and object-related distortions
in magnetic resonance images for use in radiotherapy treatment planning. Patients with …

The work presented herein describes our methods and results for predicting, measuring and
correcting geometric distortions in a clinical magnetic resonance (MR) scanner for the …

Image-guided radiotherapy has the potential to increase the success of treatment by
decreasing uncertainties concerning tumour position and shape. We pursue integrated …

Spatial distortion results in image deformation that can degrade accurate targeting and dose
calculations in MRI-guided adaptive radiotherapy. The authors present a comprehensive …

Purpose Anatomic distortion is present in all magnetic resonance imaging (MRI) data
because of nonlinearity of gradient fields; it measures up to several millimeters. We …

The integration of magnetic resonance imaging (MRI) for guidance in external beam
radiotherapy has faced significant research and development efforts in recent years. The …