Background As magnetic resonance imaging (MRI) becomes increasingly integrated into
radiotherapy (RT) for enhanced treatment planning and adaptation, the inherent geometric …

Abstract Background and purpose Magnetic Resonance Imaging (MRI) is increasingly being
used in radiotherapy (RT). However, geometric distortions are a known challenge of using …

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 …

Background Using magnetic resonance imaging (MRI) as the only imaging method for
radiotherapy treatment planning (RTP) is becoming more common as MRI-only RTP …

Objective To develop and validate a large field of view phantom and quality assurance
software tool for the assessment and characterization of geometric distortion in MRI …

Distortion in magnetic resonance images needs to be taken into account for the purposes of
radiotherapy treatment planning (RTP). A commercial MRI grid phantom was scanned on …

In view of their superior soft tissue contrast compared to computed tomography, magnetic
resonance images are commonly involved in stereotactic radiosurgery/radiotherapy …

Abstract Background and purpose Magnetic Resonance (MR)-only radiotherapy requires
geometrically accurate MR images over the full scanner Field of View (FoV). This study …

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 …

Results The mean geometric distortion for T1 weighted imaging performed with a 1.5 T
diagnostic scanner was 1.50 mm at 200 Hz/pixel. Geometric distortion decreased, as …